Ballistic Testing of Soldier Integrated Headwear System Concept Alpha Materials to Aid in Component Definition

Essais Balistiques Effectués sur les Matériaux du Modèle Alpha de Système de Coiffure Intégrée pour Soldat afin de Déterminer la Nature et le Rôle des Composants


  1. Fournier, E.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Biokinetics and Associates Ltd, Ottawa ONT (CAN)
The general construction of the Soldiers Integrated Headwear System Concept Alpha comprises soft armour placed over a resilient backing supported by a rigid light duty shell. The basic construction comprises multiple layers of Kevlar supported by an expanded polypropylene foam resilient layer backed by 3.2 mm of polycarbonate. Preliminary testing showed the ballistic V50 performance of such a combination of materials to range between 525 m/s and 556 m/s. Additional testing was conducted to establish sample compositions that would elevate the V50 to a minimum of 634 m/s which is the rated performance of the Canadian Forces current CG634 helmet. Tests were also conducted to assess the effect of the resilient backing thickness on the measured helmet backface deformation while maintaining a constant V50. Additionally, the effectiveness of replacing soft armour with rigid Kevlar and substituting the polycarbonate with similar rigid Kevlar was investigated. The results of the ballistic tests revealed that rigid Kevlar would perform better than the polycarbonate as the base light duty shell. In considering V50 performance, back face deformation, mass and overall helmet size, rigid Kevlar was again found to be a preferable solution to the soft armour option. All testing was conducted on flat samples and thus the ultimate performance of the various materials can only be assessed when functional prototypes are produced.

Il y a un résumé en français ici.

SIHS;Soldier Integrated Headwear System;Concept design;CG634;Enhanced protection;Headwear system;Helmet composition;Ballistic testing;Body armour;Ballistic tests
Report Number
DRDC-TORONTO-CR-2007-065 — Contractor Report
Date of publication
01 Jun 2007
Number of Pages
Electronic Document(PDF)

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