Delta-v slope as an indicator of injury. Traffic Inj Prev 2021;22(sup1):S165-S169
Date
10/27/2021Pubmed ID
34699275DOI
10.1080/15389588.2021.1982615Scopus ID
2-s2.0-85118248384 (requires institutional sign-in at Scopus site) 2 CitationsAbstract
OBJECTIVE: This study's objective was to examine a crash severity characteristic and the relationship as an indicator of abdominal injury causation.
METHODS: Data were analyzed from 23 CIREN case vehicles involved in a frontal type collision, had an AIS 2+ abdominal injury, and contained an electronic data recorder (EDR) download. Data was downloaded from the NHTSA and IIHS crash test databases for comparison. Data was run through a MATLAB algorithm calculating the maximum velocity-time profile slope. This data was compared to the available crash tests.
RESULTS: The CIREN vehicle EDR velocity-time slopes ranged from 233 m/s2 to 434 m/s2 for crashes with a delta-v range of 42 km/h to 77 km/h. NHTSA NCAP comparable data was available for all cases, and the slopes ranged from 263 m/s2 to 405 m/s2 calculated from the collected accelerometer. Three comparable tests were available from the IIHS database and the calculated slopes ranged from 252 m/s2 to 298 m/s2. Four test vehicles had EDR data, two each from NHTSA and IIHS and slopes ranged from 245 m/s2 to 281 m/s2. The crash test EDRs slope calculations were lower than the accelerometer data. Nine of the 12 case vehicles had slope values lower than the comparable NCAP accelerometer velocity-time slopes.
CONCLUSIONS: Vehicle velocity-time profile can be beneficial to examine the characteristics of crash severity and potential injury. This small sample of field crashes did not indicate a clear relationship of abdominal injury related to crash severity measured by the EDR delta-v slope. EDR results can be considered when determining crash severity, but the limitations need to be understood.
Author List
Hauschild H, Halloway D, Pintar FAuthor
Frank A. Pintar PhD Chair, Professor in the Biomedical Engineering department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Accidents, TrafficData Collection
Databases, Factual
Humans
Wounds and Injuries