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    Wu Zengqiang, Wang zhiwen, Qu Dingyi Research Institution of Process Equipment and Pressure Vessels. Application of moire technique in fracture analysis[J]. Journal of East China University of Science and Technology, 1987, (5).
    Citation: Wu Zengqiang, Wang zhiwen, Qu Dingyi Research Institution of Process Equipment and Pressure Vessels. Application of moire technique in fracture analysis[J]. Journal of East China University of Science and Technology, 1987, (5).
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      Graphical Abstract
      • Abstract
    • The surface fitting process is used to treat moire data, and it is an improvement of thetraditional one. From the moire data, a method of measurement of J-integrals is obtained and it can beapplied to pressure vessels and other allied shell structures. By the proposed method, J-integrals of different contours are calculated with ceatrally cracked wide plates under diffe-rent loading conditions. The J-integrals calculated by the proposed method are in goodagreement with those from the Rice formula.
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