THE DEVELOPMENT OF FIBERBOARD TARGETS, FOR THE M31A1 TRAINFIRE MECHANISM
ROCK ISLAND ARSENAL IL
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The military has a need for targetboards for use with the M31A1 Trainfire Mechanism. A program with the dual purpose of 1 providing an acceptable target for field service and 2 developing test procedures to describe adequately such material, was initiated. It was ascertained that fiberboard targets can be made which will adequately fill field service requirements. On 5 such material was composed of a large percentage of long virgin sulfate fibers in combination with a smaller amount of jute fibers and having a high resin wet strength treatment. The laminating adhesive was highly water resistant and the board was coated on both surfaces with a water repellent plastic. Properties, important in the determination of firing effectiveness, were found to be thickness, density, water absorption and modulus of elasticity, but the final criterion for evaluation must be the firing test.
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