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Technical Paper

Crash Test Facility Upgrade for NHTSA Oblique Test with Residual Energy Control and Advanced Barrier Force Measurement

2018-04-03
2018-01-1056
The objective of this study was to design and implement laboratory countermeasures for kinetic energy management in the NHTSA 90 kph oblique front impact crash test. In addition, an advanced force distribution analysis method was developed by upgrading the oblique moving deformable barrier (OMDB). The residual kinetic energy of the oblique test can be challenging to safely control, especially for smaller crash labs. The residual energies can be greater than other front crash modes by more than 50% of the initial energy. Wheel brakes on the OMDB and target vehicle may not be enough to contain the crash. Two tether systems were designed: one between the OMDB and towing cable and the other between the test vehicle and ground. Both tether systems use a hydraulic brake caliper and rotor to provide controlled payout and energy absorption. Current OMDB has basic sensing capability to measure kinematics but it has a limited ability to study dynamic force distributions.
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