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논문 기본 정보

자료유형
학술저널
저자정보
Fan, J.L. (State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology) Guo, X.L. (State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology) Wu, C.W. (State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제44권 제4호
발행연도
2012.1
수록면
417 - 429 (13page)

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Taking the superficial temperature increment as the major fatigue damage indicator, the infrared thermography was used to predict fatigue parameters (fatigue strength and S-N curve) of welded joints subjected to fatigue loading with a high mean stress, showing good predictions. The fatigue damage status, related to safety evaluation, was tightly correlated with the temperature field evolution of the hot-spot zone on the specimen surface. An energetic damage model, based on the energy accumulation, was developed to evaluate the residual fatigue life of the welded specimens undergoing cyclic loading, and a good agreement was presented. It is concluded that the infrared thermography can not only well predict the fatigue behavior of welded joints, but also can play an important role in health detection of structures subjected to mechanical loading.

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