The effect of frictional interaction at a weakly bonded or unbonded coating/ fiber interface is analysed by studying a single fiber with a finite length of uniform coating on its central region. Residual thermal stresses and applied tensile loads at the fiber ends are considered. The effects of the coefficient of friction at the interface and the thermo mechanical mismatch of the system on the stress transfer from the fiber to the coating are revealed. Through the analysis, a method to predict the residual thermal stress and to eval uate the coefficient of friction is suggested. The possibility of extending this method to evaluate general residual stresses is also addressed.
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2.
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11.
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Hsueh, C.H. "Fiber Pullout Versus Push-Down for Fiber Reinforced Composites," J. Mat. Sci., in press.
14.
Mandell, J.F. , D.H. Grande, T.H. Tsaing and F.J. McGarry. "Modified Microdebonding Test for Direct In Situ Fiber/Matrix Bond Strength Determination in Fiber Composites," Composite Materials: Testing and Design, ASTM STP 893, pp. 87-108 (1986).
15.
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Griffin, C.W. , S.Y. Limaye and D.K. Shetty. "Evaluation of Interfacial Properties in Borosilicate-SiC Composites Using Pullout Tests ," Ceram. Sci. and Eng. Proc., 9:671-678 (1988).
17.
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20.
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21.
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22.
Hu, M.S. , M.D. Thouless and A.G. Evans. "The Decohesion of Thin Films from Brittle Substrates," Acta Metall., 36(5):1301-1307 (1988).
23.
Piggott, M.E. , A. Sanadi, P.S. Chua and D. Andison. "Mechanical Interactions in the Interphasial Region of Fiber Reinforced Thermosets," in Composites Interfaces , H. Ishida and J. L. Koenig, eds., Elsevier Science-Publishing Co., Inc., pp. 109-121 (1986).
24.
DiBenedetto, A.T., L. Nicolas, L. Ambrosio and J. Groeger. "Stress Transfer and Fracture in Single Fiber/Epoxy Composites," ibid., pp. 47-54 (1986).
