Structural Engineering and Mechanics

  • 제44권4호
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  • Pages.417-429
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fatigue performance assessment of welded joints using the infrared thermography

  • 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)
  • 투고 : 2011.09.01
  • 심사 : 2012.10.24
  • 발행 : 2012.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

참고문헌

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피인용 문헌

  1. Stress assessment and fatigue behavior evaluation of components with defects based on the finite element method and lock-in thermography vol.229, pp.7, 2015, https://doi.org/10.1177/0954406214541432
  2. Very long life fatigue behaviors of 16Mn steel and welded joint vol.52, pp.5, 2014, https://doi.org/10.12989/sem.2014.52.5.889
  3. Quantitative thermography for fatigue damage assessment and life prediction of welded components vol.164, pp.None, 2022, https://doi.org/10.1016/j.mechmat.2021.104120