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Strength level effects on fatigue crack growth and retardation

โœ Scribed by G.J. Petrak

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
571 KB
Volume
6
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

Abstract4onstant amplitude and spectrum loading fatigue crack growth rate tests were performed on HP-9Ni4X+3OC steel heat treated to three strength levels. It was concluded that the constant nmplltude crack growth rate is dependent on the stxenath level of the material and independent of the toughness of the material. It is also shown that the fatigue crook growth retardation is greater for a material with low strength and high toughness. These tidings are discussed in light of the Elber closure model and it is shown that the model predicts that both the constant amplitude fatigue crack growth data and the retardation data are controlled by the yield strength.

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