Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 27, Issue 9, Pages 1040-1050Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2005.03.003
Keywords
fatigue of aluminum alloys; fitting of Al alloys fatigue data; fatigue properties of Al alloys; life prediction of Al alloys
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Bi-linear log-log model is applied to stress amplitude versus fatigue life data of 14 aluminum alloys. It is shown that the bi-linear S-N model provides a much better representation of the data than the commonly used linear model for Al alloys. The effects of bi-linear model on stress-strain, stress-life, and strain-life curves are discussed. Life predictions of aluminum alloys based on linear and bi-linear models are also compared and discussed. Estimations of the bi-linear fit constants from the linear fit constants are then presented. (c) 2005 Elsevier Ltd. All rights reserved.
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