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Analysis of Rear Seat Sled Tests with the 5th Female Hybrid III: Incorrect Conclusions in Bidez et al. SAE 2005-01-1708
Technical Paper
2019-01-0618
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
Objective: Sled test video and data were independently analyzed to assess the validity of statements and conclusions reported in Bidez et al. SAE paper 2005-01-1708 [7].
Method: An independent review and analysis of the test data and video was conducted for 9 sled tests at 35 km/h (21.5 mph). The 5th female Hybrid III was lap-shoulder belted in the 2nd or 3rd row seat of a SUV buck. For one series, the angle was varied from 0, 15, 30, 45 and 60 deg PDOF. The second series involved shoulder belt pretensioning and other belt modifications.
Results: Bidez et al. [7] claimed “The lap belts moved up and over the pelvis of the small female dummy for all impact angles tested.” We found that there was no submarining in any of the tests with the production lap-shoulder belts. Bidez et al. [7] claimed “H3-5F dummies began to roll out of their shoulder belt at… 30 degrees. Complete loss of torso support was seen at 45 degrees without significant kinetic energy dissipation.” We found that the shoulder belt remained in place and restrained the upper torso in the 0, 15 and 30 deg sled tests. At 45 and 60 deg, significant restraint was provided before the belt slipped off the shoulder. It remained in contact with the arm and chest providing restraint. Bidez et al. [7] claimed “The results indicated kinematic movement of the dummies, which were predictive of injury in all sled runs.” We found that the kinematic control was good and the biomechanical responses were well below IARVs for the 5th female Hybrid III. Bidez et al. [7] claimed “a retractor pretensioner (7 ms fire time) eliminated both submarining and torso rollout in the H3-5F in the conditions tested.” We found that the pretensioner firing pulled the lap belt up onto the abdomen inducing submarining and causing abdominal loading in two out of four tests.
Conclusion: The independent review of the videos and data shows that Bidez et al. [7] misstated the results, misrepresented the findings and reached incorrect conclusions on the testing.
Topic
Citation
Viano, D. and Parenteau, C., "Analysis of Rear Seat Sled Tests with the 5th Female Hybrid III: Incorrect Conclusions in Bidez et al. SAE 2005-01-1708," SAE Technical Paper 2019-01-0618, 2019, https://doi.org/10.4271/2019-01-0618.Data Sets - Support Documents
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References
- Kulowski , J. and Rost , W.B. Intra-Abdominal Injuries from Safety Belt in Auto Accident Arch Surg 73 970 971 December, 1956
- Patrick , L.M. and Anderson , A. Three-Point Harness Accident and Laboratory Data Comparison SAE Technical Paper 741181 1974 10.4271/741181
- Adomeit , D. and Heger , A. Motion Sequence Criteria and Design Proposals for Restraint Devices in Order to Avoid Unfavorable Biomechanic Conditions and Submarining SAE Technical Paper 751146 1975 10.4271/751146
- Adomeit , D. Evaluation Methods for the Biomechanical Quality of Restraint Systems During Frontal Impact SAE Technical Paper 770936 1977 10.4271/770936
- Rouhana , S.W. , Viano , D.C. , Jedrzejczak , E.A. , and JD , M.C. Assessing Submarining and Abdominal Injury Risk in the Hybrid III Family of Dummies SAE Technical Paper 892440 1989 10.4271/892440
- Uriot , J. , Pascal , B. , Potier , P. , Trosseille , X. et al. Investigations on the Belt-to-Pelvis Interaction in Case of Submarining. 50th Stapp Car Conference Stapp Car Crash Journal 50 53 73 2006
- Bidez , M. , Hauschild , H. , Syson , S. , and Mergl , K. Lap-Shoulder Belt Performance as a Function of Occupant Size SAE Technical Paper 2005-01-1705 2005 10.4271/2005-01-1705
- Beck , B. , Bilston , L.E. , and Brown , J. Injury Patterns of Rear Seat Occupants in Frontal Impact: An In-Depth Crash Investigation Study Inj Prev. 22 3 165 170 2016 Jun
- Beck , B. , Brown , J. , and Bilston , L.E. Assessment of Vehicle and Restraint Design Changes for Mitigating Rear Seat Occupant Injuries Traffic Inj Prev. 15 7 711 719 2014
- Beck , B. , Brown , J. , and Bilston , L.E. Variations in Rear Seat Cushion Properties and the Effects on Submarining Traffic Inj Prev. 12 1 54 61 2011 Feb
- Bidez , M. , Hauschild , H. , Mergl , K. , and Syson , S. Small Occupant Dynamics in the Rear Seat: Influence of Impact Angle and Belt Restraint Design SAE Technical Paper 2005-01-1708 2005 10.4271/2005-01-1708
- Burke , D.S. , Bidez , M.W. , and Mergl , K.M. Influence of Vehicle Restraint System Design on the Kinematics and Neck Forces of a Rear Seat Small Occupant ASME 2011 Summer Bioengineering Conference Farmington, Pennsylvania, USA June 22-25 2011 979 980
- Burke , D.S. 2013
- Furas , A. , Bidez , M.W. , Burke , D.S. , Mergl , K.M. , Rosenberg , M. , Rodriguez , N. , and Hayes , L.A. Demonstration Project to Protect Child Road Users in a Latin American Country: Year 1 Engineering Assessment Status Report 6th International Conference on Protection of Children in Cars Munich December 4-5 2008
- Gunterberg , E. and Johansson , A. 2012
- Jakobsson , L. , Bohman , K. , Andersson , M. , Stockman , I. , Bostrom , O. , Svensson , M. , Svanberg , H. , Wimmerstedt , M. , and Arbogast , K. Rear Seat Safety in Frontal to Side Impacts-Focusing on Occupant from 3yrs to Small Adult The 22nd ESV Conference Proceedings 2011
- Klinich , K.D. , Reed , M.P. , Ebert , S.M. , and Rupp , J.D. Kinematics of Pediatric Crash Dummies Seated on Vehicle Seats with Realistic Belt Geometry Traffic Inj Prev. 15 8 866 874 2014
- Van Toen , C.Y. 2013
- Mertz , H.J. , Irwin , A.L. , and Prasad , P. Biomechanical and Scaling Bases for Frontal and Side Impact Injury Assessment Reference Values 2016 10.4271/2016-22-0018
- Horsch , J.D. Occupant Dynamics as a Function of Impact Angle and Belt Restraint SAE Technical Paper 801310 1980 10.4271/801310