Abstract
A simple model has been used to calculate the residual stresses in polyester-resin/glass fibre composites that arise when the material is cooled from the post-curing temperature. An elementary elasticity solution for shrink-fit stresses gives a value of the order of 24 MNm−2 for interfacial pressures in a single fibre model, and it appears that this stress is between 10 and 20% lower if the matrix is a hypothetical material having the properties of a composite. The pull-out stress for a glass fibre in polyester resin is estimated to be 7.6 MNm−2, in good agreement with earlier experimental results.
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Harris, B. Shrinkage stresses in glass/resin composites. J Mater Sci 13, 173–177 (1978). https://doi.org/10.1007/BF00739288
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DOI: https://doi.org/10.1007/BF00739288