Crack Propagation and Arrest in Ship and Other Steels.
BATTELLE MEMORIAL INST COLUMBUS OHIO
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The program was undertaken to explore the possibility of measuring and analyzing crack propagation and arrest. These processes depend on a number of factors 1 the mechanics of the flawed structure or test specimen, 2 the plastically deformed zone at the crack tip, 3 the metals resistance to plastic flow and its rate dependence, and 4 the processes of cleavage and ductile rupture on the microstructural scale. The work sought numerical descriptions of the individual factors with the aim of assembling these into a comprehensive, systems-type analysis of propagation and arrest. The studies employed the DCB double-cantilever-beam test specimen because this configuration offers the possibility of initiating, propagating, and arresting a fast fracture, under controlled conditions, within the confines of a single specimen. Analyses of the stress fields of stationary cracks in DCB specimens are reported. Author
- Metallurgy and Metallography
- Marine Engineering