GLORIA: Design and Development of a Calibration Jig for H-Point Machines Used for the Measurement of Head Restraint Geometry 2008-01-0348
The SAE J826 H-point machine was designed to measure occupant accommodation dimensions relative to a loaded seat. It has become an intrinsic part of various crash dummy set up processes, but it has never had a formal calibration procedure. Whilst H-point location appears to be consistent from one device to another, the weight hanger locations show greater variability, and this can consequently affect the height and backset measurements of head restraints taken with a head restraint measuring device mounted upon the weight hangers. This paper describes the development of a calibration procedure and jig to measure the location of the weight hangers so that adjustments can be made if necessary. This procedure and calibration tool will enable more consistent seat evaluations, dummy set up, and consistently effective anti-whiplash seat designs.
Citation: Avery, M., Zuby, D., Gane, J., and Cox, M., "GLORIA: Design and Development of a Calibration Jig for H-Point Machines Used for the Measurement of Head Restraint Geometry," SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):293-300, 2009, https://doi.org/10.4271/2008-01-0348. Download Citation
Matthew Avery, David Zuby, John Gane, Mark Cox
Thatcham, the Motor Insurance Repair Research Centre, Insurance Institute for Highway Safety, Insurance Corporation of British Columbia, Automotive Accessories Ltd
SAE World Congress & Exhibition
Safety Test Methodologies, 2008-SP-2164, SAE International Journal of Passenger Cars - Mechanical Systems-V117-6EJ, SAE International Journal of Passenger Cars - Mechanical Systems-V117-6