A quantitative evaluation of Delta K-eff estimation methods based on random loading crack growth data

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Methods for estimation of the effective stress intensity factor range (DeltaK(eff)) are evaluated for narrow and wide band random loading crack growth test data of 2024-T352 aluminum alloy. Three methods of estimating DeltaK(eff), conventional, 2/PI0 and 2/PI methods proposed by Donald and Paris, are compared in a quantitative manner by using the results of fatigue crack growth life prediction under random loading, for three methods of determining K-op, visual measurement, ASTM offset compliance method, and the neural network method proposed by Kang and Song. The 2/PI0 and 2/PI methods of estimating DeltaK(eff), provide better results than the conventional method for narrow and wide band random loading data, for all K-op determination methods examined. (C) 2003 Elsevier Ltd. All rights reserved.
Publisher
Elsevier Sci Ltd
Issue Date
2004
Language
English
Article Type
Article
Keywords

OPENING LOAD; CLOSURE

Citation

INTERNATIONAL JOURNAL OF FATIGUE, v.26, no.2, pp.193 - 200

ISSN
0142-1123
DOI
10.1016/S0142-1123(03)00138-5
URI
http://hdl.handle.net/10203/79754
Appears in Collection
ME-Journal Papers(저널논문)
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