Mandible Headform Biofidelity Evaluation for AMMPHS


  1. Fournier, E.
  2. Wonnacott, M.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Biokinetics and Associates Ltd, Ottawa ONT (CAN)
The Advanced Modular Multi-threat Protective Headwear System (AMMPHS) development program was initiated to address the ballistic, blast and blunt impact protection needs of the soldier in today's battlefield. One aspect of protection incorporated by AMMPHS is mandible protection. To evaluate the protection offered by a mandible guard, an injury criterion with appropriate injury tolerance thresholds has been proposed based on mandible fracture levels determined from published post mortem human subject (PMHS) testing results. To evaluate mandible guard designs a surrogate headform is required. A headform with an articulating mandible was evaluated for use as a head surrogate for assessing the performance of AMMPHS mandible protection systems. The impactor loads in the fore-aft and lateral impacts to the mandible were compared to published results of similar PMHS tests and were found to be higher but the total force measured by the headform was within the range of loads reported for the PMHS. In comparisons to other headforms, the instrumented jaw of the articulating mandible headform is the most suited to the evaluation of AMMPHS mandible guards and appropriate threshold response levels are proposed.

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Report Number
DRDC-VALCARTIER-CR-2009-147 — Contractor Report
Date of publication
01 Sep 2009
Number of Pages
Electronic Document(PDF)

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