热结构高温应变光学测量技术发展探讨  

Discussion on the Development of High Temperature Strain Optical Measurement Technology for Thermal Structure

作　　者：王智勇[1] 王则力[1] 宫文然[2] 乔通 刘函 WANG Zhi-yong;WANG Ze-li;GONG Wen-ran;QIAO Tong;LIU Han(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Science and Technology on Reliability and Environment Engineering Laboratory,Beijing Institute of Structure and Environment Engineering,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6期1-8,共8页Structure & Environment Engineering

基　　金：国家自然科学基金(11502023,11502024)

摘　　要：高速飞行器热结构的高温应变测量问题是目前制约热结构发展的瓶颈问题。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弹性模量大的特性,工作环境温度高于一般的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更高的温度状态,与此同时,还需要有更高的应变测试精度、更高的应变测试分辨率以及十分精确的热力解耦。近几年,高温光纤传感、高温数字图像为代表的先进光学测量技术的发展,为在航天工程上突破高温应变测量问题打下了基础。本文关注于高温应变光学测量领域最新的技术发展,并对后续的发展方向给出思考和建议。The high temperature strain measurement for high speed aircraft thermal structure is the bottleneck problem restricting the development of thermal structure.Ceramic matrix composite materials with the characteristics of small thermal expansion coefficient and large elastic modulus,are often used in thermal structure.The working environment temperature is higher than that of general metal materials and organic composite materials.So the strain measurement for thermal structure needs to adapt to higher temperature state.Furthermore,it should have higher accuracy as well as higher resolution in strain measurement and can decouple force from temperature effect accurately.In recent years,the development of advanced optical measurement technology,such as high temperature optical fiber sensor and high temperature digital image,has laid a foundation for breaking through the problem of high temperature strain measurement in aerospace engineering.Focusing on the latest technology development in the field of high temperature strain optical measurement,this paper gives some thoughts and suggestions for the future development.

关 键 词：热结构 高温应变测试 高温光纤传感 高温数字图像 

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]