CTE Model of 3D Orthogonal Textile Reinforced Aluminum Matrix Composites

摘要

The geometric model and the effective coefficient of thermal expansion (CTE) model have been proposed for three-dimensional orthogonal textile composites. The volume averaging of stiffness and compliance coupled with CTE of warp weaver, staffer and filler yarns have been utilized in the homogenization. Composite samples were fabricated by vacuum assisted pressure infiltration method for the verification of the model. PAN-type carbon fibers and pure aluminum were used as reinforcements and matrices, respectively. CTE of the sample was measured by strain gages. Fairly good agreement has been observed between the model prediction and the test results for α_y. However, a large discrepancy exists in the case of α_x.