Simplified Key-Curve Approach for J-R-Curve Testing of CT-Specimens

摘要

A novel key-curve based procedure for crack length measurement on CT-specimens is presented. The procedure is compared with other testing methods for three different pressure vessel steels. The new procedure is shown to yield accurate enough results for normal J-R-curve testing. Different causes affecting the accuracy of the method are discussed. (Copyright (c) Valtion teknillinen tutkimeskus (VTT) 1987.)