单向复合材料层间剪切强度是衡量材料性能好坏的一个重要指标,也是复合材料结构设计中不少情况下必需的一个设计指标。因此,正确测定单向复合材料层间剪切强度问题是必须认真研究的。作者在实践中发现,测试时往往发生偏角。一种是由于试样材料的加工造成的偏角(见图1),另一种是用三点弯曲法测试时,试样放置发生了偏角(图2)。或者是两 Shear strength of unidirectional composite is an important index to measure the performance of materials and is also a necessary design index in many cases of composite structural design. Therefore, the correct determination of unidirectional composite interlaminar shear strength problems must be carefully studied. In practice, the author found that the test often declination. One is due to the processing of sample material declination (see Figure 1), and the other is the three-point bending test, the sample placed declination (Figure 2). Or two