THERMAL RESIDUAL STRESSES IN FILAMENT-WOUND CARBON-FIBER-REINFORCED COMPOSITES
- 1 July 1979
- journal article
- research article
- Published by Taylor & Francis in Journal of Thermal Stresses
- Vol. 2 (3) , 393-412
- https://doi.org/10.1080/01495737908962415
Abstract
Explicit algebraic expressions are first proposed to predict easily and precisely the thermal-expansion coefficients of unidirectional reinforced plastics. They are given as functions of the thermal and elastic properties of the constituent materials and of the fiber-volume fraction. They are derived by considering circular anisotropic fibers arranged in a hexagonal array in a matrix. Then, analytical expressions are derived for the thermal-expansion coefficients and curing stresses in filament-wound laminated composites under the assumption of elastic behavior and within the framework of laminated plate theory. Experiments on carbon-fiber/epoxy composite cylinders reinforced by helical and circumferential windings show good agreement with the calculated values. The residual stresses induced by curing are found not to be negligible compared with the low tensile strength transverse to the fibers. Such algebraic expressions for thermal coefficients, together with those for elastic moduli and failure criterion proposed by one of the authors, seem to be of use in the tailored design of laminated composite structures in a closed form, which elucidate the effects of various sorts of constitutive parameters.Keywords
This publication has 4 references indexed in Scilit:
- j soc mater sci jpnJournal of the Society of Materials Science, Japan, 1975
- Thermal Expansions of Heterogeneous Solids Containing Aligned Ellipsoidal InclusionsJournal of Composite Materials, 1974
- The Fracture Strength of Helical-Wound Composite CylinderJournal of the Society of Materials Science, Japan, 1970
- Thermal Expansion Coefficients of Composite Materials Based on Energy PrinciplesJournal of Composite Materials, 1968