GLORIA: Design and Development of a Calibration Jig for H-Point Machines Used for the Measurement of Head Restraint Geometry

Event
SAE World Congress & Exhibition
Authors Abstract
Content
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.
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DOI
https://doi.org/10.4271/2008-01-0348
Pages
8
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.
Additional Details
Publisher
Published
Apr 14, 2008
Product Code
2008-01-0348
Content Type
Journal Article
Language
English