Experiment on the correlation between wave velocity and temperature in ultrasonic solid temperature measurement
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摘要: 波速与温度的相关性是超声固体测温的前提和基础，由于超声在固体介质中的波形复杂，其传播特性也很复杂，且尚未给出温度变化时波速与温度的理论公式，这在极大程度上限制了超声固体测温的精度和适用范围。理论分析了超声固体测温中声时的温度灵敏度，搭建了基于声时检测的超声固体测温原理性试验平台，在此基础上开展了波速与温度的相关性试验研究，得到了横波波速与温度的函数关系式及其影响规律，为高温条件下超声固体测温提供了依据。Abstract: The correlation between wave velocity and temperature is the premise and foundation of ultrasonic solid temperature measurement. Due to the complex waveform in solid medium, the wave propagation characteristics are also very complex, and the theoretical formula of wave velocity and temperature when temperature changes has not been given, which greatly limits the accuracy and application range of ultrasonic solid temperature measurement. Therefore, the temperature sensitivity of ultrasonic solid temperature measurement is theoretically analyzed, and a theoretical experimental platform of ultrasonic solid temperature measurement based on acoustic time measurement is built. On this basis, the experimental study on the correlation between wave velocity and temperature is carried out, and the relationship between shear wave velocity and temperature and its influence law are obtained.It provides a basis for ultrasonic solid temperature measurement at high temperature.
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[1] 关卫和, 阎长周,陈文虎, 等. 高温环境下超声波横波检测技术[J].压力容器, 2004, 21(2):4-6,26. [2] 梁宏宝, 朱安庆. 高温超声横波波速规律与影响因素研究[J].机械设计与制造, 2007(8):27-29. [3] DATE E H F, ATKINS M, BEATON G V. Measurement of the elasticity and ultrasound velocities of steel[J]. Ultrasonics, 1971, 9(4):209-214.
[4] SCRUBY C B, MOSS B C. Non-contact ultrasonic measurements on steel at elevated temperatures[J]. NDT & E International, 1993, 26(4):177-188.
[5] CEGLA F B, CAWLEY P, ALLIN J, et al. High-temperature (>500℃) wall thickness monitoring using dry-coupled ultrasonic waveguide transducers[J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2011, 58(1):156-167.
[6] 张海澜. 理论声学[M].北京:高等教育出版社,2007. [7] 姜求志, 王金瑞. 火力发电厂金属材料手册[M]. 北京:中国电力出版社, 2000. [8] MAK D K, GAUTHIER J. Ultrasonic measurement of longitudinal and shear velocities of materials at elevated temperatures[J]. Ultrasonics, 1993, 31(4):245-249.
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