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Study of Methods for CTOD Testing of Weldments

Y. HagiwaraS. MachidaT. MiyataM. Toyosada

出版	ASTM International, 1990
URL	http://books.google.com.hk/books?id=Xtx6zgEACAAJ&hl=&source=gbs_api

註釋

Several precracking methods for crack-tip opening displacement (CTOD) testing of weldments were studied, including as local precompression, reverse bending, and high R-ratio fatigue. The precracking procedure could influence the validity of the precrack shape. However, it was found that an irregular precrack front had little effect on CTOD values of the heat-affected zone (HAZ). Results indicate that the current limitations on the fatigue precrack shape can be relaxed.