(Received 6 June 1988; accepted 9 December 1988)
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Collocation and finite element calculations and limit solutions were used to propose standard geometries and K expressions for measuring fracture toughness with arc-bend chord-support specimens. Polynomial expressions for K were determined for a wide range of crack lengths and for two span-to-depth ratios. The fracture toughnesses of steel and aluminum alloys were measured using the proposed methods and compared with results from existing standard methods.
Research Engineer, Army Armament Research, Development, and Engineering Center, Benet Laboratories, Watervliet, NY
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