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Transient effects in fatigue crack propagation

✍ Scribed by P. Lukáš; M. Klesnil

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
768 KB
Volume
8
Category
Article
ISSN
0013-7944

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✦ Synopsis

The transient fatigue crack prorate resufting from the sudden change of the stress intensity factor amplitude or from the change of the stress cycle asymmetry or from the application of the single overload cycle was measured on carbon steel specimens. To simplify the con~tions and to increase the scurvy the shape of the specimens was chosen in such a way, that the stress intensity factor was ind~ndent of the crack length. It was shown that the transient effects can be qual~~tively unde~t~ and qu~ti~tive~y in the first approxi~~on describe4 solely on the basis of the steady state fatigue crack probation data, provided that the thresh&d c~ditions of non-pro~t~on are taken into account

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