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碳—碳基(C/C)复合材料是一种新型的轻质高性能材料,在航天航空等尖端技术和其它工业方面具有重要应用。C/C复合材料的密度分布是评价该材料的一个重要参数。常规的比重法和浮力法只能测出材料的整体密度,而无法测量其密度分布。激光光
Carbon-carbon based (C / C) composites are a new class of lightweight, high performance materials that have important applications in cutting-edge technologies such as aerospace and other industries. The density distribution of C / C composites is an important parameter to evaluate this material. The conventional gravity method and buoyancy method can only measure the overall density of materials, but can not measure the density distribution. Laser light