SEDL / STP / STP856-EB / STP34521S

The Use of the Partial Unloading Compliance Method for the Determination of J^I-R Curves and J^Ic

Voss, B
Senior scientist, Fraunhofer-Institut für Werkstoffmechanik, Freiburg,

Mayville, RA
Senior scientist, Arthur D. Little, Inc., Cambridge, MA

Pages: 14    Published: Jan 1985

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Abstract

A computerized testing system was developed and utilized to determine J^I-R curves and J^Ic by the partial unloading compliance method according to the ASTM Test for J^Ic, a Measure of Fracture Toughness (E 813) and the tentative test procedure for determining the plane strain J^I-R curve. Based on testing experience with different materials in the temperature range from −196 to > 300°C some problems of the standard procedure concerning, for example, mechanical loading, data evaluation, and validity requirements, are discussed and some alternatives are proposed.