Behind Barrier Measurement Layered Armor System, Instrumented Surrogates and Backing Studies – Modification and validation of BLSH to account for impact area

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Authors
  1. Anctil, B.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN);Biokinetics and Associates Ltd, Ottawa ONT (CAN)
Abstract
The Ballistic Load Sensing Headform (BLSH) has been designed to measure force magnitude generated by the deformation of an helmet under ballistic loading. It uses an array of 7 loadcells that provide some spatial resolution to the measured force. In recent study, it has been suggested that in addition of force magnitude, the loading area is critical. Unfortunately the spatial resolution of the 7 load cells array is not sufficient for that purpose. This report investigates the possibility of using Teckscan pressure sensor on top of the load cell array to enable impact area measurement. Test are done to assess the feasibility of that method. Unfortunately, above certain force amplitudes, the Teckscan sensor material shears. On the other hand, it was found that peak impact force measured using the 7 load cells array is sensitive to the projectile area when used with a polyurethane skin material.
Keywords
Personal ballistic protection;Head injury;Test method;Blunt Trauma
Report Number
DRDC-RDDC-2019-C086 — Contract Report
Date of publication
01 Jun 2019
Number of Pages
31
DSTKIM No
CA049615
CANDIS No
810412
Format(s):
Electronic Document(PDF)

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