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On the theory of fatigue crack growth

โœ Scribed by Genady P. Cherepanov; Habil Halmanov

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
733 KB
Volume
4
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

The theoretical study is advanced to describe quantitatively the crack propagation under cyclic loads. The main assumptions accepted are: (a) a crack grows by loading during every cycle, and (b) the specific dissipation energy is a material constant. The latter contains. the known concept by Irwin and Orowan as a limiting case of steady crack growth by monotonous loading. The theory offered does not depend on the details of micromechanisms of fatigue crack tip fracturing. Apart from fracture toughness K,. only one new material constant enters into the firmI expression for the fatigue crack growth velocity. An analysis of test dataconfirms this relationship within the error limits.

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