聚合物基复合材料力学试验的一些关键问题

Some Key Problems in Mechanical Property Tests for Polymer Matrix Composites

总结了工程项目中聚合物基复合材料拉伸、压缩、弯曲和剪切力学试验中容易出现的问题,分析了影响各种力学性能试验结果的主要因素,如:拉伸试验中试样的对中度和失效模式;压缩试验中的工装夹具、弯曲百分比和失效模式;弯曲试验的跨厚比和失效模式;剪切试验的跨厚比和失效模式等。找出了引起这些问题的原因,提出了解决措施,取得了良好的工程应用效果。

Some key problems were summarized,which were often happened in mechanical property tests for polymer matrix composites. The main factors effecting on tested results were analyzed,for example,which were alignment and failure mode in tension test,loading device and grips,percent bending and failure mode in compression test,span-to-thickness ratio and failure mode in flexural tests and inter-laminar shear tests. Reasons resulting to these problems were revealed,and some ways of approaching these problem were found. It was proofed that these ways had lead some good effects to engineering mechanical property tests for polymer matrix composites.