NRL conducted a series of basic tests to characterize the properties of helmet screws and nuts used with the Light Weight Helmet (LWH)and Advanced Combat Helmet (ACH). The testing included basic dimensional measurements, Rockwell hardness and Vickers microhardness measurements, metallographic examination of the grain microstructure, basic chemical composition, tensile strength, screw/nut thread pull strength, and a drop-weight impact test. Information was obtained for sets of screws and nuts...
Topics: DTIC Archive, Holtz,Ronald L, Naval Research Laboratory Washington United States, tensile strength,...
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