Injury Risk Curves for the WorldSID 50th Male Dummy

Petitjean, Audrey; Trosseille, Xavier; Petit, Philippe; Irwin, Annette L.; Hassan, Joe; Praxl, Norbert

doi:10.4271/2009-22-0016

Cited by 20 publications

(5 citation statements)

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“…In the impactor tests, scaling was performed on the impactor mass while the impactor velocity was kept as in the original tests in order to keep the loading rate, and by that the viscous responses, identical in the simulations and the original tests. The applied scaling method assumes geometric similarity between subjects, which is a generally accepted assumption in the development of injury risk curves for ATDs as seen in the WorldSID in (Petitjean et al, 2012). An alternative approach would have been to scale THUMS to match the anthropometry of each subject, but this was not carried out due to the lack of detailed PMHS anthropometry data.…”

Section: Discussionmentioning

confidence: 99%

“…The relative width of the 95% confidence interval to the value of the stimulus was calculated for 5%, 25% and 50% injury risks. The quality index for these values was assessed as in Petitjean et al (2012). The criteria with the lowest AIC and a relative width of the 95% confidence interval less than 1.5 at the three stated injury risk levels were selected for each criteria level.…”

Section: Methodsmentioning

confidence: 99%

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Construction and evaluation of thoracic injury risk curves for a finite element human body model in frontal car crashes

Mendoza-Vazquez

Davidsson

Brolin

2015

Accident Analysis & Prevention

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Construction and evaluation of thoracic injury risk curves for a finite element human body model in frontal car crashes

Mendoza-Vazquez

Davidsson

Brolin

2015

Accident Analysis & Prevention

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“…A variety of input and boundary conditions are generally used to develop injury risk curves and criteria. 20,26 The present study used two devices to apply the insult to booted specimens. Fractures to the foot-ankle-lower leg complex were documented using medical images.…”

Section: Discussionmentioning

confidence: 99%

Foot–Ankle Fractures and Injury Probability Curves from Post-mortem Human Surrogate Tests

et al. 2016

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This purpose of this study was to replicate foot-ankle injuries seen in the military and derive human injury probability curves using the human cadaver model. Lower legs were isolated below knee from seventeen unembalmed human cadavers and they were aligned in a 90-90 posture (plantar surface orthogonal to leg). The specimens were loaded along the tibia axis by applying short-time duration pulses, using a repeated testing protocol. Injuries were documented using pre- and post-test X-rays, computed tomography scans, and dissection. Peak force-based risk curves were derived using survival analysis and accounted for data censoring. Fractures were grouped into all foot-ankle (A), any calcaneus (B), and any tibia injuries (C), respectively. Calcaneus and/or distal tibia/pilon fractures occurred in fourteen tests. Axial forces were the greatest and least for groups C and B, respectively. Times attainments of forces for all groups were within ten milliseconds. The Weibull function was the optimal probability distribution for all groups. Age was significant (p < 0.05) for groups A and C. Survival analysis-based probability curves were derived for all groups. Data are given in the body of paper. Age-based, risk-specific, and continuous distribution probability curves/responses guide in the creation of an injury assessment capability for military blast environments.

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“…(A) Comparison of THOR shoulder contact force related to the BDRC DR y , (B) Comparison of WorldSID and THOR shoulder contact force data reported by Pintar et al (2007), (C) WorldSID injury risk function reported by Petitjean et al (2012), and (D) developed THOR shoulder force injury risk functions.…”

Section: Literature Review and Standards Framework Developmentmentioning

confidence: 99%

“…Petitjean et al (Figure 7C) reported WorldSID shoulder injury risk function related to should contact force and age (Petitjean et al, 2012). …”

Section: Literature Review and Standards Framework Developmentmentioning

confidence: 99%

Investigation of the THOR Anthropomorphic Test Device for Predicting Occupant Injuries during Spacecraft Launch Aborts and Landing

Somers

Newby

Lawrence

et al. 2014

Front. Bioeng. Biotechnol.

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The objective of this study was to investigate new methods for predicting injury from expected spaceflight dynamic loads by leveraging a broader range of available information in injury biomechanics. Although all spacecraft designs were considered, the primary focus was the National Aeronautics and Space Administration Orion capsule, as the authors have the most knowledge and experience related to this design. The team defined a list of critical injuries and selected the THOR anthropomorphic test device as the basis for new standards and requirements. In addition, the team down-selected the list of available injury metrics to the following: head injury criteria 15, kinematic brain rotational injury criteria, neck axial tension and compression force, maximum chest deflection, lateral shoulder force and displacement, acetabular lateral force, thoracic spine axial compression force, ankle moments, and average distal forearm speed limits. The team felt that these metrics capture all of the injuries that might be expected by a seated crewmember during vehicle aborts and landings. Using previously determined injury risk levels for nominal and off-nominal landings, appropriate injury assessment reference values (IARVs) were defined for each metric. Musculoskeletal deconditioning due to exposure to reduced gravity over time can affect injury risk during landing; therefore a deconditioning factor was applied to all IARVs. Although there are appropriate injury data for each anatomical region of interest, additional research is needed for several metrics to improve the confidence score.

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Injury Risk Curves for the WorldSID 50th Male Dummy

Cited by 20 publications

References 0 publications

Construction and evaluation of thoracic injury risk curves for a finite element human body model in frontal car crashes

Construction and evaluation of thoracic injury risk curves for a finite element human body model in frontal car crashes

Foot–Ankle Fractures and Injury Probability Curves from Post-mortem Human Surrogate Tests

Investigation of the THOR Anthropomorphic Test Device for Predicting Occupant Injuries during Spacecraft Launch Aborts and Landing

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