摘要
针对航空、航天发动机温度测试过程中存在的传感器耐氧化性差、使用寿命短、测温精度低等迫切需要解决的问题。首先,采用超声导波测温原理,使用氧化铝(α-Al_(2)O_(3))单晶纤维作为超声波导,构建了超声温度测量系统。其次,对传感器的敏感元参数进行了设计,利用激光加热基座法生长的氧化铝单晶超声波导,制作了超声温度传感器。最后,对所制作的超声温度传感器进行了标定,在20~1800℃,传感器的灵敏度为0.44 m/(s·℃),重复性为95.27%。在模拟航空发动机测试平台上进行了测温实验,经分析该次测量合成不确定度为7.99℃。该方法为解决航空、航天发动机等恶劣环境下的温度测量,提供了新的途径。
In order to solve the problems of poor oxidation resistance,short service life and low temperature measurement accuracy of sensors in the process of temperature measurement for aviation and aerospace engines,this paper firstly establishes an ultrasonic temperature measurement system by using the principle of ultrasonic guided wave temperature measurement,with alumina(α-Al_(2)O_(3))single crystal fiber being used as the ultrasonic wave guide.Secondly,this paper designs the sensitive element parameters of a sensor,and makes an ultrasonic temperature sensor by using the alumina single crystal ultrasonic wave guide grown by the laser-heated pedestal growth method.Finally,the ultrasonic temperature sensor is calibrated.In a temperature range of 20℃to 1800℃,the sensitivity of the sensor is 0.44 m/(s·℃)and the repeatability is 95.27%.A temperature measurement experiment is carried out on a simulated aero-engine test platform,and the synthetic uncertainty of the measurement is analyzed to be 7.99℃.This method provides a new way to solve the problem of temperature measurement for aviation and aerospace engines in the harsh environment.
作者
薛红新
刘良民
苗婉茹
王丙寅
王志强
陈国锋
XUE Hongxin;LIU Liangmin;MIAO Wanru;WANG Bingyin;WANG Zhiqiang;CHEN Guofeng(School of Computer Science and Technology,North University of China,Taiyuan 030051,China;State Key Laboratory of Dynamic Measurement Technology,Taiyuan 030051,China;Inner Mongolia Power Machinery Institute,Hohhot 010010,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第6期173-179,共7页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金青年科学基金项目(62106238)
山西省青年科学基金项目(20210302124541)
省高等学校科技创新项目(2020L0283)。
关键词
超声导波
温度测量
氧化铝单晶超声波导
激光加热基座法
ultrasonic guided wave
temperature measurement
alumina single crystal ultrasonic wave guide
laser-heated pedestal growth method
