Title of Paper:定量热像法预测焊接接头的S-N曲线和残余寿命

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Date of Publication:2022-06-29

Journal:材料工程

Issue:12

Page Number:29-33

ISSN No.:1001-4381

Abstract:With the specific nominal mean stress, considering the real operating situations of welded joints, the model for fast assessing the fatigue parameters and the residual fatigue life, was established by the infrared thermographic technique, realizing the fatigue performance evaluation of inhomogeneous welded joints using quantitative thermographic method. The damage evolution status was qualitatively analyzed by monitoring the hot-spot variation on the welded joint surface. The results show that limitations of the traditional method are avoided, and that fatigue behavior parameters of inhomogeneous welded joints can be determined fast and accurately by quantitative thermographic method. Moreover, it is proved to be an effective way for health detection resorting to the hot-spot variation detected real-timely during the fatigue process.

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