碳基复合材料结构800℃光纤高温应变测量  

High Temperature Strain Measurement for Composite Material Structure by Fiber Optical Sensor Technique

作　　者：王则力[1] 乔通 宫文然[2] 王智勇[1] 荣克林[1] 王晓晖[1] WANG Ze-li;QIAO Tong;GONG Wen-ran;WANG Zhi-yong;RONG Ke-lin;WANG Xiao-hui(Beijing Institute of Structure and EnvironmentEngineering ,Beijing 100076, China)

机构地区：[1]北京强度环境研究所,北京100076 [2]北京强度环境研究所可靠性与环境工程技术重点实验室,北京100076

出　　处：《强度与环境》2019年第3期1-6,共6页Structure & Environment Engineering

基　　金：国家自然科学基金(11502023,11502024)

摘　　要：本文采用自主研制的光纤高温应变复合传感器对碳基复合材料结构样件在常温~810℃范围内的高温应变测试特性进行了研究。在马弗炉内对两件碳基复合材料结构试件分别进行三次常温~810℃重复加热实验,高温应变热输出测试结果具有很好的重复性。在万能试验机上,在800℃高温环境下对碳基复合材料结构试件进行了拉伸实验,光纤高温应变复合传感器的测量值与高温引伸计的测量值具有较好的一致性。与此同时,在本文实验结果中,光纤高温复合传感器测试结果的跟随性、平滑性要优于高温引伸计的测试结果。In this paper, the characteristics of structure strain measurement for carbon-based composite material test article from room temperature to 810℃ atmosphere by fiber optical strain sensor are presented. To obtain the temperature-induced-strain of the carbon-based composite material structure, two pieces of carbon-based test article are applied. The test articles are placed in muffle furnace freely with three times heating from room temperature to 810℃ atmosphere, respectively. And the results of structure stain show good repeatability among the three times tests. Tensile tests are conducted for the carbon-based composite material structure under 800℃ circumstance by servo-hydraulic machine to validate the accuracy of high temperature stain measurement. The results of the structure high temperature strain obtained by fiber optical strain sensor agree well with the results by high temperature extensometer. Meanwhile, the results obtained by fiber optical strain sensor are more smoothly than the results by high temperature extensometer in present tests.

关 键 词：碳基材料 高温应变 光纤传感 热输出 

分 类 号：V416.4[航空宇航科学与技术—航空宇航推进理论与工程]