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Arbelaez, Raul A.
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Next Steps for the IIHS Side Crashworthiness Evaluation Program

Insurance Institute for Highway Safety (IIHS)-Raul A. Arbelaez, Becky C. Mueller, Matthew L. Brumbelow, Eric R. Teoh
Published 2019-07-08 by The Stapp Association in United States
Abstract - IIHS has been conducting side impact crash tests since 2003. To understand how the side crashworthiness program can be enhanced, an ongoing research effort is focused on understanding the correlation between IIHS ratings and driver death rate. In addition, the performance of good-rated late-model vehicles has been assessed in higher severity side crash tests. The purpose of this short communication is to summarize the ongoing work and potential next steps toward developing a new crash test procedure or updating ratings criteria to further advance side crashworthiness.
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Comparison of Hybrid III and THOR Dummies in Paired Small Overlap Tests

Insurance Institute for Highway Safety-Becky C. Mueller, Christopher P. Sherwood, Raul A. Arbelaez, David S. Zuby, Joseph M. Nolan
Published 2011-11-07 by The Stapp Association in United States
The Insurance Institute for Highway Safety (IIHS) is investigating small overlap crash test procedures for a possible consumer information program. Analysis of real-world small overlap crashes found a strong relationship between serious head and chest injuries and occupant compartment intrusion. The main sources of serious head injuries were from the A-pillar, dash panel, or door structure, suggesting head trajectories forward and outboard possibly bypassing the airbag. Chest injuries mainly were from steering wheel intrusion and seat belt loading. In developing this program, two test dummies were evaluated for predicting occupant injury risk: midsize male Hybrid III and THOR. In the collinear small overlap crash tests conducted here, results from the two dummies were similar. Both predicted a low risk of injury to the head and chest and sometimes a high risk of injury to the lower extremities. Head and torso kinematics also were similar between dummies. Other test scenarios might show larger differences between the dummies.
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A New Calibration Specification for Linear Displacement Transducers

First Technology Safety Systems, Inc.-Zhenwen Wang, Michiel van Ratingen
Insurance Institute for Highway Safety-Raul A. Arbelaez, Matthew Brumbelow
Published 2006-04-03 by SAE International in United States
Linear displacement transducers may be used to measure deflection and, based on time histories, calculate rates of deflection and viscous criterion (VC). The current study documents that these transducers are subject to damage affecting the linearity of their responses, that this damage is not uncommon, and that the deviations from linearity can greatly affect calculations of deflection rate and VC. A calibration procedure to identify transducers with significantly non-linear responses is proposed.
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Insurance Institute for Highway Safety Side Impact Crashworthiness Evaluation Program: Impact configuration and Rationale

Insurance Institute for Highway Safety-Gregory J. Dakin, Raul A. Arbelaez, Joseph M. Nolan, David S. Zuby, Adrian K. Lund
  • Technical Paper
  • 2003-06-0041
Published 2003-05-19 by National Highway Traffic Safety Administration in United States
The Insurance Institute for Highway Safety (IIHS) has begun a new side impact crashworthiness evaluation program using tests that represent impacts from large pickup trucks or sport utility vehicles. Such vehicles are increasingly common in the North American fleet and often are the striking vehicles in side impacts with serious injuries. Earlier reports document the research underpinning the design of the new IIHS moving deformable barrier (MDB) and the selection of the SID-IIs dummy for the driver and left rear passenger positions.In this report, research is discussed in which alternative mass (1,500 or 1,900 kg), impact speed (48.3 or 50.0 km/h), and approach angle (crabbed or perpendicular) of the MDB were investigated. Impact speed affected dummy injury measures and kinematics more than mass or approach angle. Based on these results, the impact configuration for the side impact program specifies a 1,500 kg MDB, a perpendicular impact into the side of a stationary vehicle, and a test speed of 50.0 km/h.
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Comparison of EuroSID-2 and SID-IIs in Vehicle Side Impact Tests with the IIHS Barrier

Insurance Institute for Highway Safety-Raul A. Arbelaez, Joseph M. Nolan, Gregory J. Dakin, Adrian K. Lund
Published 2002-11-11 by The Stapp Association in United States
The Insurance Institute for Highway Safety (IIHS) has recently developed and evaluated a new side impact barrier to represent the front profile of pickup trucks and sport utility vehicles for a new consumer information program. In the development of this program, two dummies were considered for assessing driver injury risk in side-struck vehicles: EuroSID-2 (50th percentile male dummy) and SID-IIs (5th percentile female dummy). The purpose of this study was to compare injury responses and kinematics for these two dummies in side impact crash tests. The findings suggest that SID-IIs will be more effective in driving relevant improvements in side impact crash protection.
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DIFFICULTIES IN DETERMINING THE CAUSE OF REAL-WORLD CRASH INJURIES: A CASE STUDY OF A NASS INVESTIGATION

Insurance Institute for Highway Safety, United States of America-Raul A. Arbelaez, Brian O’Neill
  • Technical Paper
  • 2001-06-0065
Published 2001-06-04 by National Highway Traffic Safety Administration in United States
This paper describes a National Automotive Sampling System (NASS) case in which a parked 1958 Chevrolet Bel Air was rear-ended by a 1991 Dodge Grand Caravan whose unbelted driver sustained fatal chest injuries despite the presence of an airbag. This particular case was chosen because different reviewers of the information from the crash investigation have proposed conflicting conclusions about the role of the airbag in the fatal injuries. The NASS investigators and others concluded that the driver bottomed out the airbag resulting in fatal chest injuries. Insurance Institute for Highway Safety researchers concluded that the driver either was out of position due to late firing of the airbag or was slumped over the wheel due to a high blood alcohol concentration; in either case they attributed the fatal injuries to airbag inflation forces. Thus, in one scenario the airbag had insufficient power, and in the others it had too much power.Injury measures from a Hybrid III driver dummy seated in a Grand Caravan in a test re-creation of the real-world crash indicated low risk of…