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Lu, Huizhen
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Safety Belt and Occupant Factors Influencing Thoracic & Upper Abdominal Injuries in Frontal Crashes

Crash Safety Consulting-Daniel Faust
General Motors Company-Huizhen Lu, Margaret Andreen, Lisa Furton, Brian Putala
Published 2011-04-12 by SAE International in United States
This paper reports on a study that examines the effect of shoulder belt load limiters and pretensioners as well as crash and occupant factors that influence upper torso harm in real-world frontal crashes. Cases from the University of Michigan International Center for Automotive Medicine (ICAM) database were analyzed. Additional information was used from other databases including the National Highway Traffic Safety Administration (NHTSA) New Car Assessment Program (NCAP), the Insurance Institute for Highway Safety (IIHS), the National Automotive Sampling System - Crashworthiness Data System (NASS-CDS), and patient data available from the University of Michigan Trauma Center. The ICAM database is comprised of information from real-world crashes in which occupants were seriously injured and required treatment at a Level 1 Trauma Center. Cases from the database were included in this study if they met the following criteria: (a) the primary collision involved a frontal type crash and; (b) case occupants were seated in front outboard positions, restrained by 3-point safety belts and deployed frontal airbags.One hundred thirty-three (133) case occupants who sustained nearly 1,800 injuries were…
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Evaluation of Dynamic Roof Deformation in Rollover Crash Tests

SAE International Journal of Passenger Cars - Mechanical Systems

General Motors Company-Stuart W. Harvin, Bridget M. O'Brien-Mitchell, Andrew R. Dwoinen, Carol Ann Nassoiy, Daniel F. Motowski, Anthony G. Melocchi, Huizhen Lu, Manuel V. Peace
  • Journal Article
  • 2011-01-1093
Published 2011-04-12 by SAE International in United States
Although the measured amount of roof deformation associated with a given rollover crash test is often the residual or post test deformation, rollover crash test researchers are aware that roof deformation occurs dynamically throughout the rollover event with varying magnitude. The challenge to quantifying dynamic roof deformation has been the lack of a reliable method to measure and record the dynamic roof deformation during the rollover test. Researchers have explored various methods to measure dynamic roof deformation including the use of film analysis of external targets, accelerometers, string potentiometers, and 3D photogrammetry.This paper discusses a series of simulated curb trip rollover tests conducted to study and compare different methodologies to measure and record dynamic roof deformation. The tests involved midsize crossover utility vehicles instrumented with accelerometers on the roof rails at the A and B pillars and string potentiometer arrays at roof locations above the front driver and passenger seating locations. High speed digital motion cameras were rigidly mounted inside the vehicles to monitor the movement of the interior roof targets as the roof deformed…
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Advanced Field Study of Rollover Sensor Equipped Vehicles

General Motors Company-Stephen J. Cassatta, Anthony G. Melocchi, Huizhen Lu, Lisa A. Stacey, Theron V. Weinberg
University of Michigan ICAM-Stewart C. Wang, Carla J. Kohoyda-Inglis
Published 2011-04-12 by SAE International in United States
General Motors (GM), OnStar and the University of Michigan International Center for Automotive Medicine (ICAM) have formed a partnership to investigate and analyze real world rollover crashes involving GM vehicles equipped with rollover sensing technology and rollover-capable roof rail airbag systems. Candidates for the study are initially identified by OnStar, who receive notification of a rollover crash through the vehicle's Automatic Crash Response system. If the customer agrees to participate in the study, medical, vehicle and crash scene information are quickly gathered. This information is then reviewed by the medical and GM engineering communities to provide field relevant learning on injury mechanisms and vehicle system performance in rollover events. This paper provides a detailed review of the field case studies collected to date.
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