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Fatigue crack growth under C.O.D. cycling

โœ Scribed by W.D. Dover

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
668 KB
Volume
5
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

The possibility of using the parameter crack opening displacement as the basis for describing fatigue crack growth behavior in mild steel has been examined. Results are reported on crack growth rates under constant C.O.D. cycling for both plain and welded mild steel of two thicknesses. They show that a power law relationship exists between the crack tip opening displacement and the crack growth rate which fits both the f and 4 in. thick material. Some preliminary results on welded specimens also fit the same power law. Extension of this relationship to the hi cycle growth region also gave a reasonable correlation with experimental results.

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