光纤光栅传感器应用于典型复合材料梁内部应变测试的试验研究  

Experimental Research on Internal StrainTesting of Typical Composite Beam Using Fiber Grating Sensors

作　　者：陈超[1] 朱启荣[1] 沈维亮[1] 

机构地区：[1]同济大学航空航天与力学学院,上海200092

出　　处：《力学季刊》2014年第1期32-36,共5页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金(11272239);同济大学中央高校基本科研业务费专项资金(2012-058)

摘　　要：利用埋设在复合材料内部的未封装光纤光栅(Fiber Bragg Grating,FBG)传感器监测环氧树脂梁和玻璃纤维层压梁在三点弯曲过程中的应变变化,并与理论值进行对比,结果表明:两者所得的应变变化趋势吻合良好.光纤光栅传感器测量典型复合材料梁内部应变的方法不仅适用于各向同性的环氧树脂复合材料,而且适用于各向异性的玻璃纤维复合材料.The embedded unwrapped optical fiber grating sensor were used to monitor the strain of the epoxy resin beam and glass fiber composite material layer beam in the process of three point bending experiment, and compared with the theoretical calculation values, the results show that the strain change trend obtained by these two methods are in good agreement. The method of internal strain testing of typical composite beam using fiber grating sensors is not only applicable to isotropic epoxy resin composites, and is also suitable for anisotropic glass fiber composites.

关 键 词：光纤光栅 环氧树脂 玻璃纤维 应变测试 三点弯曲 

分 类 号：O348.9[理学—固体力学]