SEDL / STP / STP803V2-EB / STP36775S

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

Wilkowski, GM
Battelle Columbus Laboratories, Columbus, Ohio

Ahmad, J
Battelle Columbus Laboratories, Columbus, Ohio

Zahoor, A
Battelle Columbus Laboratories, Columbus, Ohio

Marschall, CW
Battelle Columbus Laboratories, Columbus, Ohio

Broek, D
Battelle Columbus Laboratories, Columbus, Ohio

Abou-Sayed, IS
Battelle Columbus Laboratories, Columbus, Ohio

Kanninen, MF
Battelle Columbus Laboratories, Columbus, Ohio

Pages: 20    Published: Jan 1983

Download this paper for $25 PDF (316K)          View License Agreement
Abstract

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.