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Fracture of Circumferentially Cracked Type 304 Stainless Steel Pipes Under Dynamic Loading

GM. WilkowskiJ. AhmadA. ZahoorCW. MarschallD. BroekIS. Abou-SayedMF. Kanninen

出版	ASTM International, 1983
URL	http://books.google.com.hk/books?id=d8N3zgEACAAJ&hl=&source=gbs_api

註釋A program of experimentation and analysis aimed at determining fracture instability in circumferentially cracked Type 304 stainless steel pipes in seismic or water-hammer loadings is described. Experimental work on center-cracked tension panels revealed that dynamic loading does not affect the net-section stress criterion evolved previously for Type 304 stainless steel. Full-scale tests on 100-mm-diameter (4 in.) pipes subjected to a dynamic load nevertheless indicate that a margin of safety exists beyond that predicted by the application of the net-section stress criterion. It is concluded that the finite duration of a dynamic loading together with the system compliance which allows stable crack growth beyond maximum load is primarily responsible. A J-based plastic fracture mechanics assessment based upon rate-dependent mechanical and fracture properties of the material was made and found to be consistent with this hypothesis.