CHUN-HWAY HSUEH2019-09-252019-09-25199209619526https://scholars.lib.ntu.edu.tw/handle/123456789/424890The condition of interfacial debonding at a fiber/matrix interface has been defined by two criteria: the strength criterion, and the critical energy release rate criterion. The applied stresses required to initiate interfacial debonding during fiber pull-out or push-out are analyzed by using an improved shear-lag model, in which both Poisson's effect and the radial dependence of the axial stress in the matrix are included. Both the strength and the energy criteria are considered. The bonded fiber length dependences of the debond stresses are obtained for both criteria. For the energy criterion, the asymptote of the debon stress obtained in the present study and the length-independent debond stress derived elsewhere are in excellent agreement. The effects of the properties of the fiber and of the matrix on the debond stress are also shown for both criteria which provide a basis for experimental verification of these two creteria. ? 1992.[SDGs]SDG7journal article10.1016/0961-9526(92)90024-Z2-s2.0-0347685395https://www2.scopus.com/inward/record.uri?eid=2-s2.0-0347685395&doi=10.1016%2f0961-9526%2892%2990024-Z&partnerID=40&md5=34e76cd97044cae2506cae1930c22d6b