Thermoelastic analysis of residual stresses in unidirectional, high‐performance composites

• DOI: 10.1002/pc.750060211
• Publication Date: 2005-05-28T16:50:31Z
• Authors: John A. Nairn
• Keywords: Thermoelastic damping; Interphase; Shrinkage; Micromechanics; Tension (geology); Volume fraction; Thermomechanical analysis

Abstract We present a thermoelastic analysis of the composite cylinder model for undirectional including anisotropic fibers and an interphase region. have found magnitude residual thermal stresses on micromechanics level induced by differential shrinkage between matrix. For typical composites largest stress is tension along fiber direction, simple lower bound expression this given. Prediction requires knowledge physical properties The relevant epoxy thermoplastic matrices are discussed. can be reduced tailoring region, but only if region serves to reduce temperature onset buildup. volume fraction dependence longitudinal transverse expansion coefficients compared analogous expressions in literature which do not include anisotropy fibers.