复合材料界面力学的光纤测试方法

Optical fiber interferometric testing of composites interface mechanics

本文将单模先导纤维代替普通玻璃纤维埋设于聚脂之中,将He-Ne激光分光后接入这一信号光纤及另一同样长度的参考光纤中,利用这两根光纤输出的激光的干涉效应采测试埋设于聚脂之中光导纤维的各种应力情况(在复合材料受各种外力时),从而得到玻璃纤维同聚脂的界面微观力学的各种结果,开拓了一种新的复合材料的测试方法.

The mechanical measurement between fiber and medium in composites is an attractive bub difficult subject. We use a single-mode optical fiber instead of ordinary fiber to be burried in polyester. When He-Ne laser light goes through the single optical fiber and reference fiber with the same length, we could test the stress and strain in the optical fiber in composites according to the two-beam interference. Many results could be obtained about the interface miorocosmio mechanics in composites. This paper presents a new sensitive testing method for composites.