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- Title
The influence of residual stresses implicated via cure volume shrinkage on CF/VEUH—composites.
- Authors
Rosso, Patrick; Fiedler, Bodo; Friedrich, Klaus; Schulte, Karl
- Abstract
This paper presents a thermal finite element analysis (FEA) of a unidirectional carbon fibre reinforced vinylester urethane hybrid matrix system. The evolution of the thermal residual stresses due to the mismatch in the coefficient of thermal expansion (CTE) of the single components in the cooling phase have been investigated. Additionally, the cure volume shrinkage was implemented into the FE-model. The model allows the transition of the homogeneous unidirectional composite material properties on a microscopic spot, where the properties of the fibres and the matrix can be considered separately. It could be shown, that the cure volume shrinkage (CVS) has a dramatic effect on the fibre/matrix interface region due to radial compression stresses along the fibre. Further, this may lead to microcracking or fibre/matrix debonding before any kind of load is applied to the material.
- Subjects
RESIDUAL stresses; COMPOSITE materials; THERMAL expansion; CARBON fibers; FINITE element method; CURING
- Publication
Journal of Materials Science, 2006, Vol 41, Issue 2, p383
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-005-2619-y