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Summary
WHILE THE PRINCIPAL OBJECTIVE of this manual is to describe experimental aspects of elastic-plastic fracture testing, it is still necessary to define the quantities that we are measuring by presenting the ASTM standard equations that are currently used. The J-integral of Rice (1968) is defined in terms of a path integral not easily measured experimentally. For simple bend-type specimens, however, a straightforward analysis has been developed to relate J to the area under the load versus load point displacement record. Two different equations are used to evaluate J in ASTM fracture standards, the first applicable when the amount of crack extension is small, while the second includes a correction for crack extension.
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Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1996. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
