EXPERIMENTAL STUDY OF THERMAL EXPANSION BEHAVIOR ON BRAIDED STRUCTURE COMPOSITE

The thermal expanding behavior of carbon fiber/epoxy textile composites made from plane and 3 D braided structure was experimentally studied, including the thermal deformation and the coefficient of thermal expanding (CTE). The anisotropy of thermal response is analyzed and thermal expanding mechanisms are discussed by macro microscale mechanics. These results provide an important experimental basis for dimensional stability improvement and a zero expanding structure designing of precise instrument and space field.