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ZHANG Shi-yuan, ZHENG Bai-lin, HE Peng-fei. MECHANICS ANALYSIS OF AN EDGE CRACK OF THERMAL BARRIER COATINGS UNDER THERMAL SHOCK WITH NON-FOURIER MODEL[J]. Engineering Mechanics, 2010, 27(10): 47-051,.
Citation: ZHANG Shi-yuan, ZHENG Bai-lin, HE Peng-fei. MECHANICS ANALYSIS OF AN EDGE CRACK OF THERMAL BARRIER COATINGS UNDER THERMAL SHOCK WITH NON-FOURIER MODEL[J]. Engineering Mechanics, 2010, 27(10): 47-051,.
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MECHANICS ANALYSIS OF AN EDGE CRACK OF THERMAL BARRIER COATINGS UNDER THERMAL SHOCK WITH NON-FOURIER MODEL

  • (1. Department of Civil Engineering, Fujian University of Technology, Fujian, Fuzhou, 350007, China; 2. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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  • When Thermal Barrier Coatings (TBCs) is in micro/nano scale, the heat transfers theories in macro scale, Fourier heat equation, cannot be applied. The edge crack diving force (J-integral) is different in the two scales. The temperature fields obtained from the combination of a non-Fourier model and a Fourier model are used in fracture mechanics analysis. The J-integral is analyzed by finite element method. Some TBCs physics parameters (relaxation time, phonon speed) are studied to illustrate the effect to J-integral. The results show that J-integral from a non-Fourier model is lower than that from a Fourier model. The J-integral decreases with the decrease of parameters.
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