A numerical investigation on constant amplitude loading

Harmain, G A (2005) A numerical investigation on constant amplitude loading. Journal of Metallurgy and Materials Science, 47 (2). pp. 103-117.

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The crack length a versus the number of loading cycles N is required by the designers for life predictions based on the damage tolerance philosophy. The objective of this work is to describe a computational method for determ-ination of errors which occur if the fatigue crack growth is computed on the basis of an assumed crack extension. Calculations have been compared with cycle-by-cycle method of crack extension. It is shown that for assumed crack extension method to give meaningful results there is an optimal value of assumed value of crack extension below and above which fatigue crack growth rate (FCGR) calcul-ations do not agree with experimental data. There is an excellent agreement between optimal value of crack exten-sion based life predictions of test components and experi-mental data available in the literature.

Item Type:Article
Official URL/DOI:http://eprints.nmlindia.org/5071
Uncontrolled Keywords:Constant amlitude loading; computational errors; cycle-by-cycle analysis
Divisions:Material Science and Technology
ID Code:5071
Deposited By:Dr. A K Sahu
Deposited On:30 Apr 2012 12:59
Last Modified:30 Apr 2012 12:59
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