论文部分内容阅读
一、序言 三向增强碳/碳复合材料具有正交各向异性,其断裂性能也是随方向而异。曾发现,同一块三向碳/碳材料,在有的方向上表现出很脆,而在另外一些方向上表现为假塑性很好。如果不能很好地注意到这一点,在工程设计上将会出现贻误,也不可能充分发挥出材料优良性能。开展三向碳/碳材料不同取向断裂与断口的研究,目的想了解材料在不同方向上断裂损毁过程是怎样进行的,把断裂性能与断口形貌结合起来,从断
First, the preamble Three-dimensional enhanced carbon / carbon composites with orthogonal anisotropy, the fracture performance is also different with the direction. It has been found that the same three-way carbon / carbon material shows very brittle in some directions and pseudoplasticity in other directions. If you do not pay attention to this point, there will be delaying in engineering design, it is impossible to give full play to the excellent performance of materials. To carry out the study of different orientation fracture and fracture of three-way carbon / carbon materials, the purpose of which is to understand how the fracture failure process of materials in different directions is carried out. Combining the fracture properties with fracture morphology,