光纤微腔传感器在高速飞行器高温应变精密测试中的基础研究

High temperature precise strain measurement is one of the most important and urgent-needed science test means in the development of high-speed aircraft, such as missile wind tunnel test and structure environment and strength test. It is still a long-term pending problem in high temperature test fields. Based on the developed high temperature fiber-optic micro cavity sensor with international advanced level, the purpose of this project is to solve the key issues in using such a type of sensor for high temperature precise strain measurement of high-speed aircraft, for the first time. By studying on the method of simultaneous measurement of strain and temperature, heterogeneous materials force and heat transfer model between sensor and measured substrate, and precisely acquiring signal of series micro-cavity sensors, it is aimed to precisely separate thermal strain and force strain and to realize precise measurement of multi-point strain. The successful implementation of this project would provide precise science means for researching high temperature aerodynamic behavior and characteristics of structure environment and strength. It also could provide an effective means for other fields such as aero engine test.

高温应变精密测试是高速飞行器(如导弹模型风洞实验和导弹结构强度环境试验等)研制过程中最重要和急需的科学手段之一，也是高温测试领域长期存在的难题。本项目在已研制出具有国际先进水平的高温光纤微腔传感器的基础上，首次重点解决其用于高速飞行器（特别是导弹）的高温应变精密测试关键问题。通过研究高温光纤微腔传感器的高温温度、应变同时测量方法，以及传感器与被测异质材料基底之间的热学、力学传递模型；串联微腔传感器信号的高精度获取方法等，力求解决：①高温应变精密测试中的热应变和力应变的精确分离问题；②高温应变多点同时高精度获取难题。本项目的成功实施，可为研究高速飞行器的高温空气动力学行为和结构强度环境特性提供精确的科学手段，还可为航空发动机等其它领域提供高温应变精密测试手段。

高温应变精密测试是高速飞行器(如导弹模型风洞实验和导弹结构强度环境试验等)研制过程中最重要和急需的科学手段之一，也是高温测试领域长期存在的难题。本项目在已研制出具有国际先进水平的高温光纤微腔传感器的基础上，首次重点解决其用于高速飞行器（特别是导弹）的高温应变精密测试关键问题。通过研究高温光纤微腔传感器的高温温度、应变同时测量方法，以及传感器与被测异质材料基底之间的热学、力学传递模型；串联微腔传感器信号的高精度获取方法等，解决了：①高温应变精密测试中的热应变和力应变的精确分离问题；②高温应变多点同时高精度获取难题。本项目的成功实施，为研究高速飞行器的高温空气动力学行为和结构强度环境特性提供精确的科学手段，还为航空发动机等其它领域提供高温应变精密测试手段。.项目共发表论文SCI、EI论文9篇，SCI收录5篇，获得省部级奖2项，获授权发明专利6项，申请7项，培养研究生超过10人。成果成功应用于国家重大工程：高超声速飞行器空气动力学风洞实验，得到使用单位高度评价：“突破了传统电子应变计的……瓶颈，具有十分重大的现实意义和军事价值”。