| Title | Accuracy of AHOF400 with a moment-measuring load cell barrier. |
|---|---|
| Record ID | 38672 |
| Personal Name Creator |
Brewer, John; Patel, Sanjay; Summers, Stephen; Prasad, Aloke; Mohan, Pradeep |
| Source | 11p. in various pagings; 22nd International Technical Conference on the Enhanced Safety of Vehicles, Washington, DC |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.); United States. Department of Transportation. National Highway Traffic Safety Administration; George Washington University |
| Publisher | United States. Department of Transportation. National Highway Traffic Safety Administration |
| Publication Date | 20110613 |
| Language | English |
| Abstract | Several performance measures derived from rigid barrier crash testing have been proposed to assess vehicle-to-vehicle crash compatibility. One such measure, the Average Height of Force 400 (AHOF400) [1], has been proposed to estimate the height of a vehicle’s primary energy absorbing structures. Previous studies have shown that the difference in AHOF measures is a significant predictor of crash partner fatality in vehicle to vehicle crashes. However, the single axis 250x250 mm and 125x125 mm size of the load cells limited the accuracy of these performance measures. The National Highway Traffic Safety Administration (NHTSA) recently purchased an advanced load cell barrier using 125 x 125 mm load cells (in a 9x16 load cell array) that measure compressive force and moments. Simulation studies predicted this should significantly improve the AHOF accuracy. This test program will evaluate this prediction. Previous studies suggest that single axis load cell measurements may not provide sufficient accuracy. This paper will evaluate the results using a rigid barrier that measures vertical and lateral moments in addition to longitudinal force. The results will be evaluated against vehicle geometry measurements. Six crash tests were conducted using an advanced load cell barrier with vertical and lateral moment capability. The test results are compared with previous single axis 125 x 125 mm rigid barrier tests. The additional accuracy resulting from the moment data is assessed. The benefits of the advanced load cell barrier in terms of amplifying and enabling compatibility criteria are discussed. |
| Rosap ID | dot:9159 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/9159 |
| TRT Terms | Crash tests; Crash injury research; Simulation; Load cells; Instruments for measuring loads or pressure |
| General Subjects | Load cell barriers; Crash tests; Simulation studies |
| Geographical Coverage |
United States |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Proceedings |
| URL | https://ntlrepository.blob.core.windows.net/lib/38000/38600/38672/Brewer_AccuracyofAHOF400.pdf |
| Format | |
| Database | NTL Digital Repository |