Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 32, Issue 12, Pages 1970-1976Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2010.07.004
Keywords
Fatigue; Thermography; Fatigue limit predictions; Residual life; Stress measurement
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The Thermographic Method, which takes temperature increment as the fatigue indicator, enables to predict the fatigue limit of materials and mechanical components in a relative short time. This research paper advances this Quantitative Thermographic Method for residual fatigue life assessment and nonlinear stress measurement. The developed approach was used to assess the fatigue parameters (fatigue limit, S-N curve, residual fatigue life, applied stress) of a mild steel A36, achieving good predictions. Moreover, the lock-in thermographic technique was applied for analysis of stress concentration zones to specimens, made of the same steel, with central flat-bottom hole. (C) 2010 Elsevier Ltd. All rights reserved.
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