fbpx
Wikipedia

Crash test dummy

A crash test dummy, or simply dummy, is a full-scale anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision. Dummies are used by researchers, automobile and aircraft manufacturers to predict the injuries a person might sustain in a crash.[1] Modern dummies are usually instrumented to record data such as velocity of impact, crushing force, bending, folding, or torque of the body, and deceleration rates during a collision.[2]

Two male Hybrid III crash test dummies inside a Subaru Outback.

Prior to the development of crash test dummies, automobile companies tested using human cadavers, animals and live volunteers.[3] Cadavers have been used to modify different parts of a car, such as the seatbelt.[4] This type of testing may provide more realistic test results than using a dummy,[5] but it raises ethical dilemmas[6] because human cadavers and animals are not able to consent to research studies. Animal testing is not prevalent today.[7] Computational models of the human body are increasingly being used in the industry and research to complement the use of dummies as virtual tools.[8][9]

There is a constant need for new testing because each new vehicle has a different design and as technology changes ATDs must be developed to accurately test safety and efficacy.

History edit

On August 31, 1869, Mary Ward became the first recorded victim of an automobile accident; the car involved was steam-powered (Karl Benz did not invent the gasoline-powered automobile until 1886). Ward, of Parsonstown, Ireland, was thrown out of a motor vehicle and killed.[10] Thirty years later, on September 13, 1899, Henry Bliss became North America's first motor vehicle fatality when hit while stepping off a New York City trolley. The need for a means of analyzing and mitigating the effects of motor vehicle accidents on humans was felt soon after commercial production of automobiles began in the late 1890s, and by the 1930s, when the automobile became a common part of daily life and the number of motor vehicle deaths were rising. Death rates had surpassed 15.6 fatalities per 100 million vehicle-miles continue to climb. (Currently, according to the CDC, each year approximately 1.35 million people are killed on roadways around the world.[11]).

In 1930 cars had dashboards of rigid metal, non-collapsible steering columns, and protruding knobs, buttons, and levers. Without seat belts, passengers in a frontal collision could be hurled against the interior of the automobile or through the windshield. The vehicle body itself was rigid, and impact forces were transmitted directly to the vehicle occupants. As late as the 1950s, car manufacturers were on public record as saying that vehicle accidents simply could not be made survivable because the forces in a crash were too great.[citation needed]

Cadaver testing edit

 
Cadaver used during a frontal impact test.

Detroit's Wayne State University was the first to begin serious work on collecting data on the effects of high-speed collisions on the human body. In the late 1930s there was no reliable data on how the human body responds to the sudden, violent forces acting on it in an automobile accident. Furthermore, no effective tools existed to measure such responses. Biomechanics was a field barely in its infancy. It was therefore necessary to employ two types of test subjects in order to develop initial data sets.

The first test subjects were human cadavers. They were used to obtain fundamental information about the human body's ability to withstand the crushing and tearing forces typically experienced in a high-speed accident. To such an end, steel ball bearings were dropped on skulls, and bodies were dumped down unused elevator shafts onto steel plates. Cadavers fitted with crude accelerometers were strapped into automobiles and subjected to head-on collisions and vehicle rollovers.

Albert King's 1995 Journal of Trauma article, "Humanitarian Benefits of Cadaver Research on Injury Prevention", clearly states the value in human lives saved as a result of cadaver research. King's calculations indicate that as a result of design changes implemented up to 1987, cadaver research since saved 8,500 lives annually.[12] He notes that for every cadaver used, each year 61 people survive due to wearing seat belts, 147 live due to air bags, and 68 survive windshield impact.

However, work with cadavers presented almost as many problems as it resolved. Not only were there the moral and ethical issues related to working with the dead, but there were also research concerns. The majority of cadavers available were older adults males who had died non-violent deaths; they did not represent a demographic cross-section of accident victims. Deceased accident victims could not be employed because any data that might be collected from such experimental subjects would be compromised by the cadaver's previous injuries. Since no two cadavers are the same, and since any specific part of a cadaver could only be used once, it was extremely difficult to achieve reliable comparison data. In addition, child cadavers were not only difficult to obtain, but both legal and public opinion made them effectively unusable. Moreover, as crash testing became more routine, suitable cadavers became increasingly scarce. As a result, biometric data were limited in extent and skewed toward the older males.

Very little attention has been paid to obesity and car crash studies, and it is hard to obtain an obese dummy for the experiment. Instead, human cadavers were used. Body weight is a vital factor when it comes to automobile accidents, and body mass is distributed differently in an obese person versus a non-obese person.[13] At the University of Michigan, obese cadavers were tested and compared to non-obese cadavers, and they found that the obese cadavers had more injuries in their lower extremities. The researchers also suggested that an obese person could be protected by their fat almost causing a "cushioning effect."[13]

The use of NDTs or Neutral Density Targets were implemented inside cadavers' brains to focus on the impact and separation of the brain and skull. NDTs provided detailed observations and allowed researchers to look at a specific area of the brain after the crash stimulation. It also helped to establish and develop the Finite Element model, initially developed to measure neck injuries for three-year-olds. A real child's neck was interpreted and incorporated into the FE model. FE models of the human head have become increasingly more important to the study of head injury.[4]

Volunteer testing edit

 
Colonel Stapp riding a rocket sled at Edwards Air Force Base

Some researchers took it upon themselves to serve as crash test dummies. In 1954, USAF Colonel John Paul Stapp was propelled to over 1000 km/h on a rocket sled and stopped in 1.4 seconds.[14] Lawrence Patrick, then a professor at Wayne State University, endured some 400 rides on a rocket sled in order to test the effects of rapid deceleration on the human body. He and his students allowed themselves to be hit in the chest with heavy metal pendulums, impacted in the face by pneumatically driven rotary hammers, and sprayed with shattered glass to simulate window implosion.[15] While admitting that it made him "a little sore", Patrick has said that the research he and his students conducted was seminal in developing mathematical models against which further research could be compared. While data from live testing was valuable, human subjects could not withstand tests that exceeded a certain degree of physical injury. To gather information about the causes and prevention of injuries and fatalities would require a different kind of test subject.

Animal testing edit

By the mid-1950s, the bulk of the information cadaver testing could provide had been collected. It was also necessary to collect data on accident survivability, research for which cadavers were woefully inadequate. In concert with the shortage of cadavers, this need forced researchers to seek other models. A description by Mary Roach of the Eighth Stapp Car Crash and Field Demonstration Conference shows the direction in which research had begun to move. "We saw chimpanzees riding rocket sleds, a bear on an impact swing...We observed a pig, anesthetized and placed in a sitting position on the swing in the harness, crashed into a deep-dish steering wheel at about 10 mph."[16]

One important research objective that could not be achieved with either cadavers or live humans was a means of reducing the injuries caused by impalement on the steering column. By 1964, over a million fatalities resulting from steering wheel impact had been recorded, a significant percentage of all fatalities; the introduction by General Motors in the early 1960s of the collapsible steering column reduced the risk of steering-wheel death by fifty percent.

Pigs were used for steering wheel impacts and other cabin collisions because they have an internal structure similar to humans, and can be easily placed correctly via sitting upright in the vehicle.[17] The ability to sit upright was an important requirement for test animals so that another common fatal injury among human victims, decapitation, could be studied. Additionally, it was important for researchers to be able to determine to what extent cabin design needed to be modified to ensure optimal survival circumstances. For instance, a dashboard with too little padding or padding that was too stiff or too soft would not significantly reduce head injury over a dash with no padding at all. While knobs, levers, and buttons are essential in the operation of a vehicle, it was essential to determine which design modifications would best ensure that these elements did not tear or puncture victims in a crash. Rear-view mirror impact is a significant occurrence in a frontal collision: How should a mirror be built so that it is rigid enough to perform its task, yet of low injury risk if struck?

While work with cadavers had aroused some opposition, primarily from religious institutions, it was grudgingly accepted because the dead, being dead, felt no pain, and the indignity of their situations was directly related to easing the pain of the living. Animal research, on the other hand, aroused much greater passion. Animal rights groups such as the American Society for the Prevention of Cruelty to Animals (ASPCA) were vehement in their protest, and while researchers such as Patrick supported animal testing because of its ability to produce reliable, applicable data, there was nonetheless a strong ethical unease about this process. Researchers at the University of Virginia have to call the cadaver's family and tell them what they are using their loved one for, after getting consent from the family. This seems to lessen ethical dilemmas in contrast to animal testing, because there is no sufficient way to get consent to use an animal.[6]

Although animal test data were still more easily obtained than cadaver data, the anatomical differences between animals and people and the difficulty of employing adequate internal instrumentation limited their usefulness. Animal testing is no longer practiced by any of the major automobile makers; General Motors discontinued live testing in 1993 and other manufacturers followed suit shortly thereafter.

In 1980, animals such as bears and pigs were tested in car crash simulations. This led to moral dilemmas and was not the first time that animals were used in car crashes. In 1978, The University of Michigan Highway Safety Research Institute used baboons as a substitute for human test subjects in car crashes. Although there was the objection of animal cruelty that arose, there was also the controversy of how they are similar to humans and can be used as a sufficient testing substitution for us.[18] The researchers did not end up stopping the use of baboons because of moral objections, but instead stopped because they had collected sufficient data. The moral inputs from other people and organizations were inconsistent, which caused implications when deciding to ban healthy animals from research testing. The animals were put under anesthesia, so there was no pain put upon them, but the aftereffects cannot justify this.[18] General Motors used animals for testing, and also suggested that they put the animals under anesthesia and then would kill the animals after completing the testing.[7]

Although the University of Michigan Highway Safety Research Institute did get bad publicity, it was suggested that this is not the reason why they stopped using baboons. The University of Michigan's mission was to create safer cars for human use. In order to reach this goal, research and testing is inevitable. The cruelty and the moral dilemmas of animal testing did not trump researchers still using them as subjects. They reasoned that biomechanics data are needed for an experiment like this, which will lead to safer cars.[18] Years later, animal testing ceased and instead an instrumented dummy was created as a replacement. In 1978, animals were their only subjects that could be a reliable substitution for the human being. The disadvantage, though, to using an instrumented dummy or a human cadaver, is that the tissue is not alive and will not elicit the same response as a live animal.[18] By 1991, the use of animals in vehicle collision tests was in decline because of advances in computers and technology.[7] It is difficult to use cadavers instead of animals because of human rights, and it is difficult to obtain permission from the families of the deceased. Consent for a research and testing can occur only if the person responsible for giving consent is mentally competent and comprehends the research and testing procedures fully.[19]

Dummy evolution edit

There are a growing number of specialized dummies used to gather data to improve safety for women, children, the elderly, the obese, rib impacts, and spinal impacts. THOR is a very advanced dummy because it uses sensors and has a humanlike spine, pelvis, and can capture neck data in 6DOF (six degrees of freedom) motion.[20] Special classes of dummies called Hybrid IIIs are designed to research the effects of frontal impacts, and are less useful in assessing the effects of other types of impact, such as side impacts, rear impacts, or rollovers. Hybrid IIIs use dummies that directed towards a specific age, for example, a typical ten-year-old, six-year-old, three-year-old, and a grown man.[21] The equipment that is put on, or in, dummies to gather data is also evolving and the most up-to-date equipment is embedded inside the ATD to create a more biofidelic response for more accurate data.

Sierra Sam and VIP-50 edit

 
Sierra Sam tested ejection seats.

The information gleaned from cadaver research and animal studies had already been put to some use in the construction of human simulacra as early as 1949, when "Sierra Sam"[22] was created by Samuel W. Alderson at his Alderson Research Labs (ARL) and Sierra Engineering Co. to test aircraft ejection seats, aviation helmets[23] and pilot restraint harnesses. This testing involved the use of high acceleration to 1000 km/h (600 mph) rocket sleds, beyond the capability of human volunteers to tolerate. In the early 1950s, Alderson and Grumman produced a dummy which was used to conduct crash tests in both motor vehicles and aircraft. The original "Sierra Sam" was a 95th percentile male dummy (heavier and taller than 95% of human males).

Alderson went on to produce what it called the VIP-50 series, built specifically for General Motors and Ford, but which was also adopted by the National Bureau of Standards. Sierra followed up with a competitor dummy, a model it called "Sierra Stan".

Hybrid I and II edit

 
Two uninstrumented Hybrid II 50th percentile male dummies used as ballast in a low speed collision test.

General Motors, who had taken over the impetus in developing a reliable and durable dummy, found neither Sierra model satisfied its needs. GM engineers decided to combine the best features of the VIP series and Sierra Stan, and so in 1971 Hybrid I was born. Hybrid I was what is known as a "50th percentile male" dummy. That is to say, it modeled an average male in height, mass, and proportion. In cooperation with the Society of Automotive Engineers (SAE), GM shared this design with its competitors.

Since then, considerable work has gone into creating more and more sophisticated dummies. Hybrid II was introduced in 1972, with improved shoulder, spine, and knee responses, and more rigorous documentation. Hybrid II became the first dummy to comply with the American Federal Motor Vehicle Safety Standard (FMVSS) for testing of automotive lap and shoulder belts. In 1973, a 50th percentile male dummy was released, and the National Highway Traffic Safety Administration (NHTSA)[24] undertook an agreement with General Motors to produce a model exceeding Hybrid II's performance in a number of specific areas.[25]

Though a great improvement over cadavers for standardized testing purposes, Hybrid I and Hybrid II were still very crude, and their use was limited to developing and testing seat belt designs. A dummy was needed which would allow researchers to explore injury-reduction strategies. It was this need that pushed GM researchers to develop the current Hybrid line, the Hybrid III family of crash test dummies.

Hybrid III family edit

 
The original 50th percentile male Hybrid III's family expanded to include a 95th percentile male, 5th percentile female, and ten, six, and three-year-old child dummies.

Hybrid III, the 50th percentile male dummy which made its first appearance in 1976, is the familiar crash test dummy, and he is now a family man. If he could stand upright, he would be 175 cm (5'9") tall and would have a mass of 77 kg (170 lb). He occupies the driver's seat in all the Insurance Institute for Highway Safety (IIHS)[26] 65 km/h (40 mph) offset frontal crash tests. He is joined by a "big brother", the 95th percentile Hybrid III, at 188 cm (6 ft 2 in) and 100 kg (223 lb). Ms. Hybrid III is a 5th percentile female dummy, at a diminutive 152 cm (5 ft) tall and 50 kg (110 lb).[27] The three Hybrid III child dummies represent a ten-year-old, 21 kg (47 lb) six-year-old, and a 15 kg (33 lb) three-year-old. The child models are very recent additions to the crash test dummy family; because so little hard data are available on the effects of accidents on children and such data are very difficult to obtain, these models are based in large part on estimates and approximations. The primary benefit provided by the Hybrid III is improved neck response in forward flexion and head rotation that better simulates the human.[28]

The Hybrid III dummy for three-, six- and ten-year-olds has its limitations, and does not provide the same physical outcome a human would encounter with a frontal crash. It was found that when testing the three-year-old Hybrid III dummy, it showed that frontal crashes would most likely cause cervical spine injuries. When using data from the real world, the results did not match up to the Hybrid III stimulation injuries. To get around this, THUMS was created which stands for Total Human Model of Safety.[21] The model can be easily relatable to the human body anatomically especially focusing on the human spine upon impact. Clinical testing and experiments are more accurate than a dummy and more reliable case studies can be implemented with this model. The model is based on a male only, and mimics human tissues and organs. This model is accurate for males in the 50th percentile, and it can not easily relate to three-year-olds when dealing with neck and head injuries, which are responsible for 57 percent of car crash fatalities.[21] Instead, the FE model can be appropriately implemented for this criteria.[4]

There are certain testing procedures for Hybrid IIIs to ensure that they obtain a correct humanlike neck flexure, and to ensure that they would react to a crash in a similar way that human bodies would.[citation needed]

Test device for Human Occupant Restraint (THOR) edit

THOR-50M mid-size male edit

 
THOR-50M & THOR-5F Crash Test Dummies

THOR is an advanced crash test dummy designed to expand the Hybrid-III test dummy capabilities in assessing frontal impacts. THOR-50M, the mid-size male, was created to improve human-like anthropometry and increase the instrumentation for mitigating injury.[29]

Although development started in the 1990s, with the latest design update by the National Highway Traffic Safety Administration (NHTSA) in contract with Humanetics, the first new prototypes were delivered in 2013.[30] Since then, Europe's New Car Assessment Program became the first agency to adopt THOR into testing protocols, replacing the Hybrid III mid-sized male in the driver's seat.[31]

THOR-5F small female edit

The small female version of THOR is based on the technology of the male version, but has more female-like anthropometry to represent females in frontal impact testing.[29] 

 
Current family of advanced crash test dummies used today.

The female THOR and the lack of female test dummies has received new interest as gender equity issues have emerged citing the lack of female crash test dummies and availability of new technology in regulation testing.[32] A Center for Applied Biomechanics, University of Virginia, paper published in 2019 citing the increased risk of injury in female automobile occupants which started a fresh examination into female impact testing and protection.[33]

The THOR dummies can accommodate 150+ channels of data collection throughout their bodies.[34]

Warrior Injury Assessment Manikin (WIAMan) edit

 
U.S. Army Warrior Injury Assessment Manikin (WIAMan)

WIAMan is a blast test dummy designed to assess potential skeletal injuries of soldiers exposed to under-body blast (UBB). Designed jointly by the U.S. Army and Diversified Technical Systems (DTS), the project includes an anthropomorphic test device and in-dummy data acquisition and sensor solution.[35] Since the project started in February 2015, two generations of WIAMan prototypes have undergone a series of lab tests and blast events in the field.[36]

With the prototype's delivery in 2018, WIAMan evaluates the effects of under-body blasts involving vehicles, and assess the risk to soldiers in ground vehicle systems. The goal of the WIAMan project is to acquire data that will improve the design of military vehicles and personal protective equipment. WIAMan and the platform created to simulate an IED explosion are undergoing continued testing.[35]

Test dummies of the past were intended for the auto industry and lacked the same response a human would have to explosions.[37] A challenge for the Army has been to develop a crash test dummy that moves enough like a human body to get an accurate result. The Army is working to make the mannequin "biofidelic," meaning it can match human movement. At 5-feet-11-inches tall and 185 lbs., WIAMan is based on the size and movement of an average soldier.[35]

U.S. Army Research Laboratory and its partners at Johns Hopkins University Applied Physics Lab completed biofidelity testing in 2017. The purpose of the testing was to develop a dummy capable of predicting specific injury risk to occupants in a vehicle during live-fire tests, based on human response data.[35]

The manikin supports up to 156 channels of data acquisition, measuring different variables a soldier may experience in a vehicle blast. WIAMan includes self-contained internal power and the world's smallest data acquisition system called SLICE6, based on SLICE NANO architecture, eliminating the huge mass of sensor cables normally exiting dummies. The data measured within WIAMan includes forces, moments, accelerations and angular velocity.[38] The DEVCOM Analysis Center (DAC) processes WIAMan data via a software analysis tool called the Analysis of Manikin Data, or AMANDA. On Feb. 2, 2022, AMANDA was accredited by the U.S. Army Test and Evaluation Command for use in live fire test and evaluation.[39]

Female crash test dummy edit

In May 2023, the world's first female crash test dummy was used in a crash test at the Swedish National Road and Transport Research Institute in Linköping, Sweden. The model was created after crash statistics showed that female bodies are more prone to other injuries than male, such as whiplash. The female dummy was developed with the help of an EU project.[40]

Testing procedure edit

 
Hybrid III undergoing calibration

Every Hybrid III undergoes calibration prior to a crash test. Its head is removed and then dropped from 40 centimetres (16 in) to calibrate the head instrumentation. Then the head and neck are reattached, set in motion, and stopped abruptly to check for proper neck flexure. Hybrids wear chamois leather skin; the knees are struck with a metal probe to check for proper puncture. Finally, the head and neck are attached to the body, which is attached to a test platform and struck violently in the chest by a heavy pendulum to ensure that the ribs bend and flex as they should.

When the dummy has been determined to be ready for testing, calibration marks are fastened to the side of the head to aid researchers when slow-motion films are reviewed later. The dummy is then placed inside the test vehicle, set to seating position and then marked on the head and knees. Up to fifty-eight data channels located in all parts of the Hybrid III, from the head to the ankle, record between 30,000 and 35,000 data items in a typical 100–150 millisecond crash. These data are recorded in a temporary data repository in the dummy's chest and then downloaded to a computer once the test is complete.

Because the Hybrid is a standardized data collection device, any part of a particular Hybrid type is interchangeable with any other. Not only can one dummy be tested several times, but if a part should fail, it can be replaced with a new part. A fully instrumented dummy is worth about 150,000.[41]

Positioning and restraints edit

 
10-year-old Hybrid III dummy in a booster seat after a frontal crash test.

Children in the three-year-old age group are more likely to have a fatality because it is the age where positioning is crucial. In some countries, children transition from facing the rear of the car to facing the front at this age. A study was done on restraints and positioning of three-year-olds. It was concluded that being restrained and in the front seat has a lower fatality rate than children positioned in the back seat but not restrained.[21] The safety results indicated that children should be placed in the back seat and restrained. It also suggests that restraints have a bigger impact on safety than seating positions.[21] A lap belt used on children will not provide as much safety as it would for an adult, due to the flexibility of children. An adult seatbelt could do more harm to a child than good, which is why children should properly be utilizing the Child Restraint System instead. This system includes a booster seat and a proper belt that fits the child's criteria including age, weight and height.[21]

Specialized dummies edit

Hybrid IIIs are designed to research the effects of frontal impacts, and are less useful in assessing the effects of other types of impact, such as side impacts, rear impacts, or rollovers. After head-on collisions, the most common severe injury accident is the side impact.

 
WorldSID is an advanced side impact ATD, used for EuroNCAP side impact test modes.
  • The SID (Side Impact Dummy) family of test dummies is designed to measure rib, spine, and internal organ effects in side collisions. It also assesses spine and rib deceleration and compression of the chest cavity. SID is the United States government testing standard, EuroSID is used in Europe to ensure compliance with safety standards, and SID II(s) represents a 5th-percentile female. BioSID is a more sophisticated version of SID and EuroSID,[citation needed] but is not used in a regulatory capacity. The WorldSID is a project to develop a new generation of dummy under the International Organization for Standardization.</ref>[42][43]
  • BioRID is a dummy designed to assess the effects of a rear impact. Its primary purpose is to research whiplash, and to aid designers in developing effective head and neck restraints. BioRID is more sophisticated in its spinal construction than Hybrid; 24 vertebra simulators allow BioRID to assume a much more natural seating posture, and to demonstrate the neck movement and configuration seen in rear-end collisions.
 
12-month-old CRABI dummy in a child safety restraint seat.
  • CRABI is a child dummy used to evaluate the effectiveness of child restraint devices, including seat belts and air bags. There are three models of the CRABI, representing 18-month, 12-month, and 6-month-old children.
  • FGOA is a first generation obese anthropometric test device which can be used to study the automotive safety challenges for obese occupants, who are believed to have higher risk of mortality in automobile collisions comparing to non-obese occupants.
 
THOR offers sophisticated instrumentation for assessing frontal-impacts
  • THOR is currently the most advanced dummy on the market.[20] The successor of Hybrid III, THOR has a more human-like spine and pelvis, and its face contains a number of sensors which allow analysis of facial impacts to an accuracy currently unobtainable with other dummies. THOR's range of sensors is also greater in quantity and sensitivity than those of Hybrid III. THOR's original manufacturer, GESAC Inc., ceased production after the slowdown of the auto industry in the late 2000s. THOR was being further developed, and two other companies were working on similar dummies; NHTSA's ultimate goal for this government-funded project was the development of a single THOR dummy, but THOR dummy development stopped. FTSS, bought by Humanetics, and DentonATD both continued to produce the THOR LX and THOR FLX.[citation needed]
  • Animal models have been used to test the safety of dog harnesses and crates in crash conditions.[44]

Regulation edit

For the purpose of U.S. regulation and Global Technical Regulations and for clear communication in safety and seating design,[45] dummies carry specifically designated reference points, such as the H-point; these are also used, for example, in automotive design.

Popular culture edit

See also edit

Footnotes edit

  1. ^ Nick Kurczewski (2011-01-20). "Smart Crash Test Dummies – The Latest Car Safety Tech – RoadandTrack.com". Road & Track. Retrieved 2 June 2015.
  2. ^ "How Crash Testing Works". 2 March 2001.
  3. ^ "The Humble History of the Crash Test Dummy". 4 August 2019.
  4. ^ a b c Warren N., Hardy (2007). "A Study of the Response of the Human Cadaver Head to Impact". Stapp Car Crash. SAE Technical Paper Series. 51: 17–80. doi:10.4271/2007-22-0002. PMC 2474809. PMID 18278591.
  5. ^ Marquis, Erin (2018-10-31). "How Dead Bodies Save Lives Every Day on the Road". Jalopnik. Retrieved 2023-02-01.
  6. ^ a b Marshall, Tyler (25 November 1993). "Auto Safety Crash Testing Ignites Furor : Germany: The program uses human bodies. U.S. tests using cadavers at 3 universities are disclosed". Los Angeles Times. Retrieved 15 February 2016.
  7. ^ a b c "Animals Killed in Automotive Crash Tests". The New York Times. September 28, 1991. Retrieved 26 March 2016.
  8. ^ CORPORATION, TOYOTA MOTOR. "Toyota Updates its THUMS Virtual Crash Dummy Software | Corporate | Global Newsroom". Toyota Motor Corporation Official Global Website. Retrieved 2020-04-02.
  9. ^ "Home". GHBMC. Retrieved 2020-04-02.
  10. ^ . Famous Offaly People. Offaly Historical & Archaeological Society. Archived from the original on September 27, 2007. Retrieved April 25, 2006.
  11. ^ "Road Traffic Injuries and Deaths—A Global Problem". 14 December 2020.
  12. ^ King, A.I., Viano, D.C., Mizeres, N., & States, J. D. (1995). Humanitarian benefits of cadaver research on injury prevention. Journal of Trauma-Injury Infection & Critical Care, 38(4) 564-569. Retrieved from https://journals.lww.com/jtrauma/toc/1995/04000
  13. ^ a b Kent, Richard (2010). "Is There Really a "Cushion Effect"?: A Biomechanical Investigation of Crash Injury Mechanisms in the Obese". Obesity. 18 (4): 749–753. doi:10.1038/oby.2009.315. PMID 19798067. S2CID 20464616.
  14. ^ 'Fastest Man on Earth,' Col. John Paul Stapp, Dies at 89[dead link] (March 1, 2000). Retrieved April 18, 2006.
  15. ^ Roach, Mary (November 19, 1999). I was a human crash-test dummy March 28, 2006, at the Wayback Machine. Salon.com. Retrieved November 29, 2007.
  16. ^ I was a human crash-test dummy November 25, 2005, at the Wayback Machine (November 19, 1999).
  17. ^ Heneson, Nancy (1980). "Live Animals in Car Crash Studies". International Journal for the Study of Animal Problems: 214–217. Retrieved 26 March 2016.
  18. ^ a b c d Heneson, Nancy (1980). "Live Animals in Car Crash Studies". International Journal for the Study of Animal Problems: 214–217. Retrieved 26 March 2016.
  19. ^ Chung, Christine S.; Lehmann, Lisa Soleymani (August 2002). "Informed Consent and the Process of Cadaver Donation". Archives of Pathology & Laboratory Medicine. 126 (8): 964–968. doi:10.5858/2002-126-0964-ICATPO. PMID 12171497. Retrieved 24 April 2016.
  20. ^ a b "How Crash Test Dummies Evolved to Cost $1 Million - YouTube". YouTube.
  21. ^ a b c d e f Wencheng, Zhang (2008). "Incorporation of Biomechanical Child Cadaver Neck Behaviour in a Child Model and Injury Prediction in Vehicle Frontal Crash". Heritage Branch. Retrieved 18 April 2016. {{cite journal}}: Cite journal requires |journal= (help)
  22. ^ . Archived from the original on 29 May 2015. Retrieved 2 June 2015.
  23. ^
  24. ^ "NHTSA". 2019-03-13.
  25. ^ NHTSA 49 CFR 572.31 Subpart E—Hybrid III Test Dummy
  26. ^ "New HLDI study: Texting laws don't reduce crashes". iihs.org. September 28, 2010. Retrieved 21 October 2010.
  27. ^ Mello, Tara Baukus (December 5, 2000).The Female Dummy: No Brains, But A Real Lifesaver February 20, 2006, at the Wayback Machine. Retrieved April 18, 2006.
  28. ^ (February 1992)
  29. ^ a b "THOR | NHTSA". www.nhtsa.gov. Retrieved 2022-05-18.
  30. ^ Parent, Dan (2013-09-30). (PDF) (Report). National Highway Traffic Safety Administration. Archived from the original (PDF) on 2022-07-23.
  31. ^ Been, B; Ellway, J (2020-11-24). THOR Specification and Certification (PDF) (Report). Vol. 1. Euro NCAP. (PDF) from the original on 2022-03-03.
  32. ^ "Democratic lawmakers push U.S. Transportation Secretary for faster changes to crash test dummy standards". InvestigateTV. Retrieved 2022-05-18.
  33. ^ Forman, Jason; Poplin, Gerald S.; Shaw, C. Greg; McMurry, Timothy L.; Schmidt, Kristin; Ash, Joseph; Sunnevang, Cecilia (2019-08-18). "Automobile injury trends in the contemporary fleet: Belted occupants in frontal collisions". Traffic Injury Prevention. 20 (6): 607–612. doi:10.1080/15389588.2019.1630825. ISSN 1538-9588. PMID 31283362. S2CID 195844967.
  34. ^ "THOR-5F". humanetics.humaneticsgroup.com. Retrieved 2022-05-18.
  35. ^ a b c d Kalinyak, Rachael (2017-08-07). "Army creates crash test dummy to improve vehicle safety for soldiers". Army Times. Retrieved 2018-08-28.
  36. ^ Group, Techbriefs Media. "WIAMan – Tech Briefs :: Aerospace & Defense Technology". www.aerodefensetech.com. Retrieved 2018-08-28.
  37. ^ "WIAMan program celebrates milestone | U.S. Army Research Laboratory". www.arl.army.mil. Retrieved 2018-08-28.
  38. ^ "Data Acquisition Systems & Sensors for Product Testing – Diversified Technical Systems, Inc". dtsweb.com. 5 February 2018. Retrieved 2018-08-28.
  39. ^ "Army Injury Assessment Tool Receives Stamp of Accreditation - Soldier Systems Daily".
  40. ^ Balcer Bednarska, Jaqueline; Brantemo, Axel (31 May 2023). "Svenska forskare visar upp världens första kvinnliga krockdocka" [Swedish scientists unveil the world's first crash test dummy]. www.svt.se. Sveriges Television. Retrieved 31 May 2023.
  41. ^ How the Test are done 2011-05-07 at the Wayback Machine (19 March 2003). Retrieved April 18, 2006.
  42. ^ S. Moss. . YouTube. Archived from the original on 25 May 2020. Retrieved 2 June 2015.
  43. ^ "Data Acquisition System is Key to Engineering a Smarter Dummy". November 2014.
  44. ^ Donchey, Sarah (25 November 2015). "New crash tests help keep dogs safe in cars". Click 2 Houston. Retrieved 7 July 2016.
  45. ^ "NHTSA's Activities under the United Nations for Europe 1998 Global Agreement: Head Restraints, Docket NHTSA-2008-001600001". NHTSA.
  46. ^ Taylor, Heather. "How the Crash Test Dummies Revolutionized Seat Belt Safety". AW360. Advertising Week. Retrieved 24 April 2021.
  47. ^ "Aamir Khan: Ceat Tyres' new crash test dummy | Team-BHP".

References edit

Listen to this article
(2 parts, 26 minutes)
 
These audio files were created from a revision of this article dated 15 January 2006 (2006-01-15), and do not reflect subsequent edits.

As of 15:16, 16 May 2022 (UTC), this article is derived in whole or in part from Humanetics. The copyright holder has licensed the content in a manner that permits reuse under CC BY-SA 3.0 and GFDL. All relevant terms must be followed. The text and its release have been received by the Wikimedia Volunteer Response Team; for more information, see the talk page.

  • "Anatomy of a Crash-Test Dummy", IEEE Spectrum, October 2007
  • How the dead have helped the living
  • I was a human crash test dummy
  • The Female Crash Test Dummy She May Not Have a Brain, but She Could Save Your Life
  • It's Smart to be a Dummy 2005-08-31 at the Wayback Machine
  • Pregnant crash test dummy
  • Roach, Mary (2003). Stiff: The Curious Lives of Human Cadavers. New York: W.W. Norton & Co. ISBN 978-0-393-05093-6.
  • Joodaki, H. (2015). "Comparison of Kinematic Behaviour of a First Generation Obese Dummy and Obese PMHS in Frontal Sled Tests". Proceedings of IRCOBI: 454–466.

External links edit

  • Research of the Relationship of Pedestrian Injury to Collision Speed, Car-type, Impact Location and Pedestrian Sizes using Human FE model (THUMS Version 4)
  • Crash Test Dummy

  This article incorporates public domain material from websites or documents of the United States Department of Transportation.

crash, test, dummy, band, crash, test, dummies, series, toys, incredible, crash, dummies, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, needs, addition. For the band see Crash Test Dummies For the series of toys see The Incredible Crash Dummies This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Crash test dummy news newspapers books scholar JSTOR January 2015 Learn how and when to remove this template message This article possibly contains original research Please improve it by verifying the claims made and adding inline citations Statements consisting only of original research should be removed February 2015 Learn how and when to remove this template message Learn how and when to remove this template message A crash test dummy or simply dummy is a full scale anthropomorphic test device ATD that simulates the dimensions weight proportions and articulation of the human body during a traffic collision Dummies are used by researchers automobile and aircraft manufacturers to predict the injuries a person might sustain in a crash 1 Modern dummies are usually instrumented to record data such as velocity of impact crushing force bending folding or torque of the body and deceleration rates during a collision 2 Two male Hybrid III crash test dummies inside a Subaru Outback Prior to the development of crash test dummies automobile companies tested using human cadavers animals and live volunteers 3 Cadavers have been used to modify different parts of a car such as the seatbelt 4 This type of testing may provide more realistic test results than using a dummy 5 but it raises ethical dilemmas 6 because human cadavers and animals are not able to consent to research studies Animal testing is not prevalent today 7 Computational models of the human body are increasingly being used in the industry and research to complement the use of dummies as virtual tools 8 9 There is a constant need for new testing because each new vehicle has a different design and as technology changes ATDs must be developed to accurately test safety and efficacy Contents 1 History 1 1 Cadaver testing 1 2 Volunteer testing 1 3 Animal testing 2 Dummy evolution 2 1 Sierra Sam and VIP 50 2 2 Hybrid I and II 2 3 Hybrid III family 2 4 Test device for Human Occupant Restraint THOR 2 4 1 THOR 50M mid size male 2 4 2 THOR 5F small female 2 5 Warrior Injury Assessment Manikin WIAMan 2 6 Female crash test dummy 3 Testing procedure 3 1 Positioning and restraints 3 2 Specialized dummies 4 Regulation 5 Popular culture 6 See also 7 Footnotes 8 References 9 External linksHistory editOn August 31 1869 Mary Ward became the first recorded victim of an automobile accident the car involved was steam powered Karl Benz did not invent the gasoline powered automobile until 1886 Ward of Parsonstown Ireland was thrown out of a motor vehicle and killed 10 Thirty years later on September 13 1899 Henry Bliss became North America s first motor vehicle fatality when hit while stepping off a New York City trolley The need for a means of analyzing and mitigating the effects of motor vehicle accidents on humans was felt soon after commercial production of automobiles began in the late 1890s and by the 1930s when the automobile became a common part of daily life and the number of motor vehicle deaths were rising Death rates had surpassed 15 6 fatalities per 100 million vehicle miles continue to climb Currently according to the CDC each year approximately 1 35 million people are killed on roadways around the world 11 In 1930 cars had dashboards of rigid metal non collapsible steering columns and protruding knobs buttons and levers Without seat belts passengers in a frontal collision could be hurled against the interior of the automobile or through the windshield The vehicle body itself was rigid and impact forces were transmitted directly to the vehicle occupants As late as the 1950s car manufacturers were on public record as saying that vehicle accidents simply could not be made survivable because the forces in a crash were too great citation needed Cadaver testing edit nbsp Cadaver used during a frontal impact test Detroit s Wayne State University was the first to begin serious work on collecting data on the effects of high speed collisions on the human body In the late 1930s there was no reliable data on how the human body responds to the sudden violent forces acting on it in an automobile accident Furthermore no effective tools existed to measure such responses Biomechanics was a field barely in its infancy It was therefore necessary to employ two types of test subjects in order to develop initial data sets The first test subjects were human cadavers They were used to obtain fundamental information about the human body s ability to withstand the crushing and tearing forces typically experienced in a high speed accident To such an end steel ball bearings were dropped on skulls and bodies were dumped down unused elevator shafts onto steel plates Cadavers fitted with crude accelerometers were strapped into automobiles and subjected to head on collisions and vehicle rollovers Albert King s 1995 Journal of Trauma article Humanitarian Benefits of Cadaver Research on Injury Prevention clearly states the value in human lives saved as a result of cadaver research King s calculations indicate that as a result of design changes implemented up to 1987 cadaver research since saved 8 500 lives annually 12 He notes that for every cadaver used each year 61 people survive due to wearing seat belts 147 live due to air bags and 68 survive windshield impact However work with cadavers presented almost as many problems as it resolved Not only were there the moral and ethical issues related to working with the dead but there were also research concerns The majority of cadavers available were older adults males who had died non violent deaths they did not represent a demographic cross section of accident victims Deceased accident victims could not be employed because any data that might be collected from such experimental subjects would be compromised by the cadaver s previous injuries Since no two cadavers are the same and since any specific part of a cadaver could only be used once it was extremely difficult to achieve reliable comparison data In addition child cadavers were not only difficult to obtain but both legal and public opinion made them effectively unusable Moreover as crash testing became more routine suitable cadavers became increasingly scarce As a result biometric data were limited in extent and skewed toward the older males Very little attention has been paid to obesity and car crash studies and it is hard to obtain an obese dummy for the experiment Instead human cadavers were used Body weight is a vital factor when it comes to automobile accidents and body mass is distributed differently in an obese person versus a non obese person 13 At the University of Michigan obese cadavers were tested and compared to non obese cadavers and they found that the obese cadavers had more injuries in their lower extremities The researchers also suggested that an obese person could be protected by their fat almost causing a cushioning effect 13 The use of NDTs or Neutral Density Targets were implemented inside cadavers brains to focus on the impact and separation of the brain and skull NDTs provided detailed observations and allowed researchers to look at a specific area of the brain after the crash stimulation It also helped to establish and develop the Finite Element model initially developed to measure neck injuries for three year olds A real child s neck was interpreted and incorporated into the FE model FE models of the human head have become increasingly more important to the study of head injury 4 Volunteer testing edit nbsp Colonel Stapp riding a rocket sled at Edwards Air Force BaseSome researchers took it upon themselves to serve as crash test dummies In 1954 USAF Colonel John Paul Stapp was propelled to over 1000 km h on a rocket sled and stopped in 1 4 seconds 14 Lawrence Patrick then a professor at Wayne State University endured some 400 rides on a rocket sled in order to test the effects of rapid deceleration on the human body He and his students allowed themselves to be hit in the chest with heavy metal pendulums impacted in the face by pneumatically driven rotary hammers and sprayed with shattered glass to simulate window implosion 15 While admitting that it made him a little sore Patrick has said that the research he and his students conducted was seminal in developing mathematical models against which further research could be compared While data from live testing was valuable human subjects could not withstand tests that exceeded a certain degree of physical injury To gather information about the causes and prevention of injuries and fatalities would require a different kind of test subject Animal testing edit By the mid 1950s the bulk of the information cadaver testing could provide had been collected It was also necessary to collect data on accident survivability research for which cadavers were woefully inadequate In concert with the shortage of cadavers this need forced researchers to seek other models A description by Mary Roach of the Eighth Stapp Car Crash and Field Demonstration Conference shows the direction in which research had begun to move We saw chimpanzees riding rocket sleds a bear on an impact swing We observed a pig anesthetized and placed in a sitting position on the swing in the harness crashed into a deep dish steering wheel at about 10 mph 16 One important research objective that could not be achieved with either cadavers or live humans was a means of reducing the injuries caused by impalement on the steering column By 1964 over a million fatalities resulting from steering wheel impact had been recorded a significant percentage of all fatalities the introduction by General Motors in the early 1960s of the collapsible steering column reduced the risk of steering wheel death by fifty percent Pigs were used for steering wheel impacts and other cabin collisions because they have an internal structure similar to humans and can be easily placed correctly via sitting upright in the vehicle 17 The ability to sit upright was an important requirement for test animals so that another common fatal injury among human victims decapitation could be studied Additionally it was important for researchers to be able to determine to what extent cabin design needed to be modified to ensure optimal survival circumstances For instance a dashboard with too little padding or padding that was too stiff or too soft would not significantly reduce head injury over a dash with no padding at all While knobs levers and buttons are essential in the operation of a vehicle it was essential to determine which design modifications would best ensure that these elements did not tear or puncture victims in a crash Rear view mirror impact is a significant occurrence in a frontal collision How should a mirror be built so that it is rigid enough to perform its task yet of low injury risk if struck While work with cadavers had aroused some opposition primarily from religious institutions it was grudgingly accepted because the dead being dead felt no pain and the indignity of their situations was directly related to easing the pain of the living Animal research on the other hand aroused much greater passion Animal rights groups such as the American Society for the Prevention of Cruelty to Animals ASPCA were vehement in their protest and while researchers such as Patrick supported animal testing because of its ability to produce reliable applicable data there was nonetheless a strong ethical unease about this process Researchers at the University of Virginia have to call the cadaver s family and tell them what they are using their loved one for after getting consent from the family This seems to lessen ethical dilemmas in contrast to animal testing because there is no sufficient way to get consent to use an animal 6 Although animal test data were still more easily obtained than cadaver data the anatomical differences between animals and people and the difficulty of employing adequate internal instrumentation limited their usefulness Animal testing is no longer practiced by any of the major automobile makers General Motors discontinued live testing in 1993 and other manufacturers followed suit shortly thereafter In 1980 animals such as bears and pigs were tested in car crash simulations This led to moral dilemmas and was not the first time that animals were used in car crashes In 1978 The University of Michigan Highway Safety Research Institute used baboons as a substitute for human test subjects in car crashes Although there was the objection of animal cruelty that arose there was also the controversy of how they are similar to humans and can be used as a sufficient testing substitution for us 18 The researchers did not end up stopping the use of baboons because of moral objections but instead stopped because they had collected sufficient data The moral inputs from other people and organizations were inconsistent which caused implications when deciding to ban healthy animals from research testing The animals were put under anesthesia so there was no pain put upon them but the aftereffects cannot justify this 18 General Motors used animals for testing and also suggested that they put the animals under anesthesia and then would kill the animals after completing the testing 7 Although the University of Michigan Highway Safety Research Institute did get bad publicity it was suggested that this is not the reason why they stopped using baboons The University of Michigan s mission was to create safer cars for human use In order to reach this goal research and testing is inevitable The cruelty and the moral dilemmas of animal testing did not trump researchers still using them as subjects They reasoned that biomechanics data are needed for an experiment like this which will lead to safer cars 18 Years later animal testing ceased and instead an instrumented dummy was created as a replacement In 1978 animals were their only subjects that could be a reliable substitution for the human being The disadvantage though to using an instrumented dummy or a human cadaver is that the tissue is not alive and will not elicit the same response as a live animal 18 By 1991 the use of animals in vehicle collision tests was in decline because of advances in computers and technology 7 It is difficult to use cadavers instead of animals because of human rights and it is difficult to obtain permission from the families of the deceased Consent for a research and testing can occur only if the person responsible for giving consent is mentally competent and comprehends the research and testing procedures fully 19 Dummy evolution editThere are a growing number of specialized dummies used to gather data to improve safety for women children the elderly the obese rib impacts and spinal impacts THOR is a very advanced dummy because it uses sensors and has a humanlike spine pelvis and can capture neck data in 6DOF six degrees of freedom motion 20 Special classes of dummies called Hybrid IIIs are designed to research the effects of frontal impacts and are less useful in assessing the effects of other types of impact such as side impacts rear impacts or rollovers Hybrid IIIs use dummies that directed towards a specific age for example a typical ten year old six year old three year old and a grown man 21 The equipment that is put on or in dummies to gather data is also evolving and the most up to date equipment is embedded inside the ATD to create a more biofidelic response for more accurate data Sierra Sam and VIP 50 edit nbsp Sierra Sam tested ejection seats The information gleaned from cadaver research and animal studies had already been put to some use in the construction of human simulacra as early as 1949 when Sierra Sam 22 was created by Samuel W Alderson at his Alderson Research Labs ARL and Sierra Engineering Co to test aircraft ejection seats aviation helmets 23 and pilot restraint harnesses This testing involved the use of high acceleration to 1000 km h 600 mph rocket sleds beyond the capability of human volunteers to tolerate In the early 1950s Alderson and Grumman produced a dummy which was used to conduct crash tests in both motor vehicles and aircraft The original Sierra Sam was a 95th percentile male dummy heavier and taller than 95 of human males Alderson went on to produce what it called the VIP 50 series built specifically for General Motors and Ford but which was also adopted by the National Bureau of Standards Sierra followed up with a competitor dummy a model it called Sierra Stan Hybrid I and II edit nbsp Two uninstrumented Hybrid II 50th percentile male dummies used as ballast in a low speed collision test General Motors who had taken over the impetus in developing a reliable and durable dummy found neither Sierra model satisfied its needs GM engineers decided to combine the best features of the VIP series and Sierra Stan and so in 1971 Hybrid I was born Hybrid I was what is known as a 50th percentile male dummy That is to say it modeled an average male in height mass and proportion In cooperation with the Society of Automotive Engineers SAE GM shared this design with its competitors Since then considerable work has gone into creating more and more sophisticated dummies Hybrid II was introduced in 1972 with improved shoulder spine and knee responses and more rigorous documentation Hybrid II became the first dummy to comply with the American Federal Motor Vehicle Safety Standard FMVSS for testing of automotive lap and shoulder belts In 1973 a 50th percentile male dummy was released and the National Highway Traffic Safety Administration NHTSA 24 undertook an agreement with General Motors to produce a model exceeding Hybrid II s performance in a number of specific areas 25 Though a great improvement over cadavers for standardized testing purposes Hybrid I and Hybrid II were still very crude and their use was limited to developing and testing seat belt designs A dummy was needed which would allow researchers to explore injury reduction strategies It was this need that pushed GM researchers to develop the current Hybrid line the Hybrid III family of crash test dummies Hybrid III family edit nbsp The original 50th percentile male Hybrid III s family expanded to include a 95th percentile male 5th percentile female and ten six and three year old child dummies Main article Hybrid III Hybrid III the 50th percentile male dummy which made its first appearance in 1976 is the familiar crash test dummy and he is now a family man If he could stand upright he would be 175 cm 5 9 tall and would have a mass of 77 kg 170 lb He occupies the driver s seat in all the Insurance Institute for Highway Safety IIHS 26 65 km h 40 mph offset frontal crash tests He is joined by a big brother the 95th percentile Hybrid III at 188 cm 6 ft 2 in and 100 kg 223 lb Ms Hybrid III is a 5th percentile female dummy at a diminutive 152 cm 5 ft tall and 50 kg 110 lb 27 The three Hybrid III child dummies represent a ten year old 21 kg 47 lb six year old and a 15 kg 33 lb three year old The child models are very recent additions to the crash test dummy family because so little hard data are available on the effects of accidents on children and such data are very difficult to obtain these models are based in large part on estimates and approximations The primary benefit provided by the Hybrid III is improved neck response in forward flexion and head rotation that better simulates the human 28 The Hybrid III dummy for three six and ten year olds has its limitations and does not provide the same physical outcome a human would encounter with a frontal crash It was found that when testing the three year old Hybrid III dummy it showed that frontal crashes would most likely cause cervical spine injuries When using data from the real world the results did not match up to the Hybrid III stimulation injuries To get around this THUMS was created which stands for Total Human Model of Safety 21 The model can be easily relatable to the human body anatomically especially focusing on the human spine upon impact Clinical testing and experiments are more accurate than a dummy and more reliable case studies can be implemented with this model The model is based on a male only and mimics human tissues and organs This model is accurate for males in the 50th percentile and it can not easily relate to three year olds when dealing with neck and head injuries which are responsible for 57 percent of car crash fatalities 21 Instead the FE model can be appropriately implemented for this criteria 4 There are certain testing procedures for Hybrid IIIs to ensure that they obtain a correct humanlike neck flexure and to ensure that they would react to a crash in a similar way that human bodies would citation needed Test device for Human Occupant Restraint THOR edit THOR 50M mid size male edit nbsp THOR 50M amp THOR 5F Crash Test DummiesTHOR is an advanced crash test dummy designed to expand the Hybrid III test dummy capabilities in assessing frontal impacts THOR 50M the mid size male was created to improve human like anthropometry and increase the instrumentation for mitigating injury 29 Although development started in the 1990s with the latest design update by the National Highway Traffic Safety Administration NHTSA in contract with Humanetics the first new prototypes were delivered in 2013 30 Since then Europe s New Car Assessment Program became the first agency to adopt THOR into testing protocols replacing the Hybrid III mid sized male in the driver s seat 31 THOR 5F small female edit The small female version of THOR is based on the technology of the male version but has more female like anthropometry to represent females in frontal impact testing 29 nbsp Current family of advanced crash test dummies used today The female THOR and the lack of female test dummies has received new interest as gender equity issues have emerged citing the lack of female crash test dummies and availability of new technology in regulation testing 32 A Center for Applied Biomechanics University of Virginia paper published in 2019 citing the increased risk of injury in female automobile occupants which started a fresh examination into female impact testing and protection 33 The THOR dummies can accommodate 150 channels of data collection throughout their bodies 34 Warrior Injury Assessment Manikin WIAMan edit nbsp U S Army Warrior Injury Assessment Manikin WIAMan WIAMan is a blast test dummy designed to assess potential skeletal injuries of soldiers exposed to under body blast UBB Designed jointly by the U S Army and Diversified Technical Systems DTS the project includes an anthropomorphic test device and in dummy data acquisition and sensor solution 35 Since the project started in February 2015 two generations of WIAMan prototypes have undergone a series of lab tests and blast events in the field 36 With the prototype s delivery in 2018 WIAMan evaluates the effects of under body blasts involving vehicles and assess the risk to soldiers in ground vehicle systems The goal of the WIAMan project is to acquire data that will improve the design of military vehicles and personal protective equipment WIAMan and the platform created to simulate an IED explosion are undergoing continued testing 35 Test dummies of the past were intended for the auto industry and lacked the same response a human would have to explosions 37 A challenge for the Army has been to develop a crash test dummy that moves enough like a human body to get an accurate result The Army is working to make the mannequin biofidelic meaning it can match human movement At 5 feet 11 inches tall and 185 lbs WIAMan is based on the size and movement of an average soldier 35 U S Army Research Laboratory and its partners at Johns Hopkins University Applied Physics Lab completed biofidelity testing in 2017 The purpose of the testing was to develop a dummy capable of predicting specific injury risk to occupants in a vehicle during live fire tests based on human response data 35 The manikin supports up to 156 channels of data acquisition measuring different variables a soldier may experience in a vehicle blast WIAMan includes self contained internal power and the world s smallest data acquisition system called SLICE6 based on SLICE NANO architecture eliminating the huge mass of sensor cables normally exiting dummies The data measured within WIAMan includes forces moments accelerations and angular velocity 38 The DEVCOM Analysis Center DAC processes WIAMan data via a software analysis tool called the Analysis of Manikin Data or AMANDA On Feb 2 2022 AMANDA was accredited by the U S Army Test and Evaluation Command for use in live fire test and evaluation 39 Female crash test dummy edit In May 2023 the world s first female crash test dummy was used in a crash test at the Swedish National Road and Transport Research Institute in Linkoping Sweden The model was created after crash statistics showed that female bodies are more prone to other injuries than male such as whiplash The female dummy was developed with the help of an EU project 40 Testing procedure edit nbsp Hybrid III undergoing calibrationEvery Hybrid III undergoes calibration prior to a crash test Its head is removed and then dropped from 40 centimetres 16 in to calibrate the head instrumentation Then the head and neck are reattached set in motion and stopped abruptly to check for proper neck flexure Hybrids wear chamois leather skin the knees are struck with a metal probe to check for proper puncture Finally the head and neck are attached to the body which is attached to a test platform and struck violently in the chest by a heavy pendulum to ensure that the ribs bend and flex as they should When the dummy has been determined to be ready for testing calibration marks are fastened to the side of the head to aid researchers when slow motion films are reviewed later The dummy is then placed inside the test vehicle set to seating position and then marked on the head and knees Up to fifty eight data channels located in all parts of the Hybrid III from the head to the ankle record between 30 000 and 35 000 data items in a typical 100 150 millisecond crash These data are recorded in a temporary data repository in the dummy s chest and then downloaded to a computer once the test is complete Because the Hybrid is a standardized data collection device any part of a particular Hybrid type is interchangeable with any other Not only can one dummy be tested several times but if a part should fail it can be replaced with a new part A fully instrumented dummy is worth about 150 000 41 Positioning and restraints edit nbsp 10 year old Hybrid III dummy in a booster seat after a frontal crash test Children in the three year old age group are more likely to have a fatality because it is the age where positioning is crucial In some countries children transition from facing the rear of the car to facing the front at this age A study was done on restraints and positioning of three year olds It was concluded that being restrained and in the front seat has a lower fatality rate than children positioned in the back seat but not restrained 21 The safety results indicated that children should be placed in the back seat and restrained It also suggests that restraints have a bigger impact on safety than seating positions 21 A lap belt used on children will not provide as much safety as it would for an adult due to the flexibility of children An adult seatbelt could do more harm to a child than good which is why children should properly be utilizing the Child Restraint System instead This system includes a booster seat and a proper belt that fits the child s criteria including age weight and height 21 Specialized dummies edit Hybrid IIIs are designed to research the effects of frontal impacts and are less useful in assessing the effects of other types of impact such as side impacts rear impacts or rollovers After head on collisions the most common severe injury accident is the side impact nbsp WorldSID is an advanced side impact ATD used for EuroNCAP side impact test modes The SID Side Impact Dummy family of test dummies is designed to measure rib spine and internal organ effects in side collisions It also assesses spine and rib deceleration and compression of the chest cavity SID is the United States government testing standard EuroSID is used in Europe to ensure compliance with safety standards and SID II s represents a 5th percentile female BioSID is a more sophisticated version of SID and EuroSID citation needed but is not used in a regulatory capacity The WorldSID is a project to develop a new generation of dummy under the International Organization for Standardization lt ref gt 42 43 BioRID is a dummy designed to assess the effects of a rear impact Its primary purpose is to research whiplash and to aid designers in developing effective head and neck restraints BioRID is more sophisticated in its spinal construction than Hybrid 24 vertebra simulators allow BioRID to assume a much more natural seating posture and to demonstrate the neck movement and configuration seen in rear end collisions nbsp 12 month old CRABI dummy in a child safety restraint seat CRABI is a child dummy used to evaluate the effectiveness of child restraint devices including seat belts and air bags There are three models of the CRABI representing 18 month 12 month and 6 month old children FGOA is a first generation obese anthropometric test device which can be used to study the automotive safety challenges for obese occupants who are believed to have higher risk of mortality in automobile collisions comparing to non obese occupants nbsp THOR offers sophisticated instrumentation for assessing frontal impactsTHOR is currently the most advanced dummy on the market 20 The successor of Hybrid III THOR has a more human like spine and pelvis and its face contains a number of sensors which allow analysis of facial impacts to an accuracy currently unobtainable with other dummies THOR s range of sensors is also greater in quantity and sensitivity than those of Hybrid III THOR s original manufacturer GESAC Inc ceased production after the slowdown of the auto industry in the late 2000s THOR was being further developed and two other companies were working on similar dummies NHTSA s ultimate goal for this government funded project was the development of a single THOR dummy but THOR dummy development stopped FTSS bought by Humanetics and DentonATD both continued to produce the THOR LX and THOR FLX citation needed Animal models have been used to test the safety of dog harnesses and crates in crash conditions 44 Regulation editFor the purpose of U S regulation and Global Technical Regulations and for clear communication in safety and seating design 45 dummies carry specifically designated reference points such as the H point these are also used for example in automotive design Popular culture editIn 1986 the National Highway Traffic Safety Administration NHTSA a division of the United States Department of Transportation launched a series of public service announcements in magazines and on television featuring two talking crash dummies named Vince voiced by Jack Burns played by Tony Reitano and Larry voiced by Lorenzo Music played by Tom Harrison later replaced by Whitney Rydbeck who modelled seat belt safety practices through their slapstick antics with the slogan You Could Learn a Lot from a Dummy By the time the campaign was retired in 1999 it was credited by whom for raising seat belt usage from 21 to 67 46 Since then crash dummy characters have continued to be used in seat belt safety campaigns especially those aimed at children In the early 1990s Tyco Toys created a line of action figures called The Incredible Crash Dummies based on the characters from the NHTSA television advertisements They were intended to fall apart at the touch of a button on their abdomens Vehicles that could be crashed into walls and broken were also produced Dummies and vehicles were easily reassembled They prompted a half hour television special The Adventures of the Incredible Crash Dummies Unique for its time the cartoon was produced entirely using 3D computer animation techniques A comic book series and a video game for the Nintendo Entertainment System Super Nintendo Entertainment System Game Boy and other gaming consoles were produced In 2004 a series of Crash Dummies animated shorts were commissioned for the FOX network Related toys from Mattel s Hot Wheels brand were produced The television series MythBusters employed a Hybrid II model crash test dummy Buster for dangerous experiments Additionally the show utilized a number of simulaids in addition to using the hosts themselves as the test subjects if the experiment was safe enough In Discovery Kids children s educational series Crash Test Danny the title character is a living crash test dummy played by Ben Langley who gets crushed blown up and pulled apart in the name of science In 2014 Secret Exit Ltd released Turbo Dismount a game where the player puts a crash test dummy in different vehicles to send them off into crashes In 2020 actor Aamir Khan played a crash test dummy in a series of advertisements for Indian tire manufacturer CEAT Tyres 47 See also editCar accident Chicken gun impact simulator to measure damages on the vehicle side Crash test Crashworthiness Euro NCAP Safety car Mannequin Crash simulation Secchi disk the characteristic test dummy fiducial marker symbol Footnotes edit Nick Kurczewski 2011 01 20 Smart Crash Test Dummies The Latest Car Safety Tech RoadandTrack com Road amp Track Retrieved 2 June 2015 How Crash Testing Works 2 March 2001 The Humble History of the Crash Test Dummy 4 August 2019 a b c Warren N Hardy 2007 A Study of the Response of the Human Cadaver Head to Impact Stapp Car Crash SAE Technical Paper Series 51 17 80 doi 10 4271 2007 22 0002 PMC 2474809 PMID 18278591 Marquis Erin 2018 10 31 How Dead Bodies Save Lives Every Day on the Road Jalopnik Retrieved 2023 02 01 a b Marshall Tyler 25 November 1993 Auto Safety Crash Testing Ignites Furor Germany The program uses human bodies U S tests using cadavers at 3 universities are disclosed Los Angeles Times Retrieved 15 February 2016 a b c Animals Killed in Automotive Crash Tests The New York Times September 28 1991 Retrieved 26 March 2016 CORPORATION TOYOTA MOTOR Toyota Updates its THUMS Virtual Crash Dummy Software Corporate Global Newsroom Toyota Motor Corporation Official Global Website Retrieved 2020 04 02 Home GHBMC Retrieved 2020 04 02 Mary Ward 1827 1869 Famous Offaly People Offaly Historical amp Archaeological Society Archived from the original on September 27 2007 Retrieved April 25 2006 Road Traffic Injuries and Deaths A Global Problem 14 December 2020 King A I Viano D C Mizeres N amp States J D 1995 Humanitarian benefits of cadaver research on injury prevention Journal of Trauma Injury Infection amp Critical Care 38 4 564 569 Retrieved from https journals lww com jtrauma toc 1995 04000 a b Kent Richard 2010 Is There Really a Cushion Effect A Biomechanical Investigation of Crash Injury Mechanisms in the Obese Obesity 18 4 749 753 doi 10 1038 oby 2009 315 PMID 19798067 S2CID 20464616 Fastest Man on Earth Col John Paul Stapp Dies at 89 dead link March 1 2000 Retrieved April 18 2006 Roach Mary November 19 1999 I was a human crash test dummy Archived March 28 2006 at the Wayback Machine Salon com Retrieved November 29 2007 I was a human crash test dummy Archived November 25 2005 at the Wayback Machine November 19 1999 Heneson Nancy 1980 Live Animals in Car Crash Studies International Journal for the Study of Animal Problems 214 217 Retrieved 26 March 2016 a b c d Heneson Nancy 1980 Live Animals in Car Crash Studies International Journal for the Study of Animal Problems 214 217 Retrieved 26 March 2016 Chung Christine S Lehmann Lisa Soleymani August 2002 Informed Consent and the Process of Cadaver Donation Archives of Pathology amp Laboratory Medicine 126 8 964 968 doi 10 5858 2002 126 0964 ICATPO PMID 12171497 Retrieved 24 April 2016 a b How Crash Test Dummies Evolved to Cost 1 Million YouTube YouTube a b c d e f Wencheng Zhang 2008 Incorporation of Biomechanical Child Cadaver Neck Behaviour in a Child Model and Injury Prediction in Vehicle Frontal Crash Heritage Branch Retrieved 18 April 2016 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Collection History Roswell Archived from the original on 29 May 2015 Retrieved 2 June 2015 Evaluation of Sierra Engineering Co Lightweight Helmet NHTSA 2019 03 13 NHTSA 49 CFR 572 31 Subpart E Hybrid III Test Dummy New HLDI study Texting laws don t reduce crashes iihs org September 28 2010 Retrieved 21 October 2010 Mello Tara Baukus December 5 2000 The Female Dummy No Brains But A Real Lifesaver Archived February 20 2006 at the Wayback Machine Retrieved April 18 2006 Hybrid II and Hybrid III Dummy Neck Properties for Computer Modeling February 1992 a b THOR NHTSA www nhtsa gov Retrieved 2022 05 18 Parent Dan 2013 09 30 NHTSA THOR Update PDF Report National Highway Traffic Safety Administration Archived from the original PDF on 2022 07 23 Been B Ellway J 2020 11 24 THOR Specification and Certification PDF Report Vol 1 Euro NCAP Archived PDF from the original on 2022 03 03 Democratic lawmakers push U S Transportation Secretary for faster changes to crash test dummy standards InvestigateTV Retrieved 2022 05 18 Forman Jason Poplin Gerald S Shaw C Greg McMurry Timothy L Schmidt Kristin Ash Joseph Sunnevang Cecilia 2019 08 18 Automobile injury trends in the contemporary fleet Belted occupants in frontal collisions Traffic Injury Prevention 20 6 607 612 doi 10 1080 15389588 2019 1630825 ISSN 1538 9588 PMID 31283362 S2CID 195844967 THOR 5F humanetics humaneticsgroup com Retrieved 2022 05 18 a b c d Kalinyak Rachael 2017 08 07 Army creates crash test dummy to improve vehicle safety for soldiers Army Times Retrieved 2018 08 28 Group Techbriefs Media WIAMan Tech Briefs Aerospace amp Defense Technology www aerodefensetech com Retrieved 2018 08 28 WIAMan program celebrates milestone U S Army Research Laboratory www arl army mil Retrieved 2018 08 28 Data Acquisition Systems amp Sensors for Product Testing Diversified Technical Systems Inc dtsweb com 5 February 2018 Retrieved 2018 08 28 Army Injury Assessment Tool Receives Stamp of Accreditation Soldier Systems Daily Balcer Bednarska Jaqueline Brantemo Axel 31 May 2023 Svenska forskare visar upp varldens forsta kvinnliga krockdocka Swedish scientists unveil the world s first crash test dummy www svt se Sveriges Television Retrieved 31 May 2023 How the Test are done Archived 2011 05 07 at the Wayback Machine 19 March 2003 Retrieved April 18 2006 S Moss SciTech Connect Anthropometry for WorldSID a World Harmonized Midsize Male Side Impact Crash Dummy YouTube Archived from the original on 25 May 2020 Retrieved 2 June 2015 Data Acquisition System is Key to Engineering a Smarter Dummy November 2014 Donchey Sarah 25 November 2015 New crash tests help keep dogs safe in cars Click 2 Houston Retrieved 7 July 2016 NHTSA s Activities under the United Nations for Europe 1998 Global Agreement Head Restraints Docket NHTSA 2008 001600001 NHTSA Taylor Heather How the Crash Test Dummies Revolutionized Seat Belt Safety AW360 Advertising Week Retrieved 24 April 2021 Aamir Khan Ceat Tyres new crash test dummy Team BHP References editListen to this article 2 parts 26 minutes source source source source nbsp These audio files were created from a revision of this article dated 15 January 2006 2006 01 15 and do not reflect subsequent edits Audio help More spoken articles As of 15 16 16 May 2022 UTC this article is derived in whole or in part fromHumanetics The copyright holder has licensed the content in a manner that permits reuse under CC BY SA 3 0 and GFDL All relevant terms must be followed The text and its release have been received by the Wikimedia Volunteer Response Team for more information see the talk page Anatomy of a Crash Test Dummy IEEE Spectrum October 2007 History of Crash Dummies How the dead have helped the living I was a human crash test dummy The Female Crash Test Dummy She May Not Have a Brain but She Could Save Your Life The Sierra Sam Story Meet 50th Percentile Hybrid III Biomechanics and the Cyberhuman It s Smart to be a Dummy Archived 2005 08 31 at the Wayback Machine Pregnant crash test dummy Roach Mary 2003 Stiff The Curious Lives of Human Cadavers New York W W Norton amp Co ISBN 978 0 393 05093 6 Joodaki H 2015 Comparison of Kinematic Behaviour of a First Generation Obese Dummy and Obese PMHS in Frontal Sled Tests Proceedings of IRCOBI 454 466 External links editResearch of the Relationship of Pedestrian Injury to Collision Speed Car type Impact Location and Pedestrian Sizes using Human FE model THUMS Version 4 Crash Test Dummy nbsp This article incorporates public domain material from websites or documents of the United States Department of Transportation Retrieved from https en wikipedia org w index php title Crash test dummy amp oldid 1181508050 Popular culture, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.