复合材料热结构高温应变测量技术发展现状与途径  

Development Status and Approaches of High-temperature Strain Measurement Technology for Thermal Structure of Composite Materials

作　　者：阎君[1] 王智勇[2] 谭志勇 Yan Jun;Wang Zhi-yong;Tan Zhi-yong(China Academy of Launch Vehicle Technology,Beijing,100076;Beijing Institute of Structure and Environment Engineering,Beijing,100076;Science and Technology on Space Physics Laboratory,Beijing,100076)

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]北京强度与环境研究所,北京100076 [3]空间物理重点实验室,北京100076

出　　处：《导弹与航天运载技术（中英文）》2022年第6期8-15,共8页Missiles and Space Vehicles

摘　　要：复合材料热结构的高温应变测量是目前制约相关地面试验验证的瓶颈问题。热结构多采用陶瓷基复合材料,该类材料具有热膨胀系数小和各向异性的特性,工作环境温度高于以往的普通金属材料和有机复合材料,因此热结构的应变测试需要适应苛刻的高温使用状态。与此同时,还需要满足较高的应变测试精度、测试分辨率以及十分精确的热力解耦。在对该领域研究现状进行系统梳理的基础上,对应变测试的不同技术途径进行了分析总结,提出了本领域研究的后续发展思路。At present,the high-temperature strain measurement for thermal structure of composite materials is the bottleneck problem that restricts the ground test verification of thermal structure.Ceramic matrix composite materials are mostly used in thermal structures,which have the characteristics of low thermal expansion coefficient and anisotropy,and the working environment temperature is higher than that of common metal materials and organic composite materials in the past.Therefore,the strain test of thermal structures needs to adapt to harsh high-temperature service conditions.At the same time,it is necessary to meet the requirements of high strain measurement resolution and very accurate thermal-mechanical decoupling.On the basis of systematically combing the research status in this field,and summarizes different technical approaches for strain measurement are analyzed,and the follow-up development ideas of this field are put forward.

关 键 词：热结构 复合材料 高温应变测试 光纤传感器 数字图像 

分 类 号：TB332[一般工业技术—材料科学与工程]