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The development of the concept of crack-growth resistance as a means of characterizing fracture toughness is reviewed. While the first model was proposed in 1954, major developments, experimental determinations, and applications of R-curves date from 1960.
crack propagation, fracture toughness, fracture strength, fracture tests, aluminum alloys, transition temperature, documents
Principal research associate, Armco Steel Corp., Middletown, Ohio