EXPERIMENTAL STUDY OF THERMAL EXPANSION BEHAVIOR ON BRAIDED STRUCTURE COMPOSITE
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摘要: 对二维和三维碳纤维/环氧树脂编织结构复合材料的热膨胀特性进行实验研究, 确定编织复合材料热膨胀系数的各向异性分布特征, 给出其热膨胀特性与纤维编织模式和纤维体积含量之间的相互依赖关系, 分析编织复合材料的热膨胀机理, 表明其热膨胀系数的可设计性, 为设计复合材料零膨胀结构提供实验依据和理论分析。Abstract: 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.
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