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    Chemical Stresses Induced by Boundary Layer Diffusion in a Cylindrical Sandwich Composite

    Sun-Chien Ko1,2, Chen-Ti Hu1, Sanboh Lee1, Y.T. Chou3

    CMC-Computers, Materials & Continua, Vol.28, No.2, pp. 165-180, 2012, DOI:10.3970/cmc.2012.028.165

    Abstract The chemical stresses developed in a cylindrical sandwich composite during radial boundary layer diffusion have been investigated. The system consists of a thin layer A of circular cross section sandwiched between two semi-infinite outer layers B, with the diffusivity of diffusant in A (DA) being much greater than that in B (DB). Two boundary conditions, the constant surface concentration and the instantaneous surface concentration, were considered. The concentration distributions were obtained by the Bessel-Laplace transform method. The stress functions were solved analytically based on the linear elasticity. Numerical computations were performed to illustrate the effects of the diffusivity ratio (DA/DB)… More >

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