Study on the Setup for Measurement of Temperature-dependent Elastic Properties of Solids
BAO Jing1,2,FENG Xiao-juan1,LIN Hong1,ZHANG Jin-tao1,QI Xiao-feng1,2,LI Xiao-ting2
1. Division of Thermophysics and Process Measurements, National Institute of Metrology, Beijing 100029, China;
2. Institute of Quality and Technical Supervision, Hebei University, Baoding, Hebei 071002, China
Abstract：Based on the principle of ultrasonic resonance spectrum, a setup is developed including the ultrasonic signaling and detecting system, the thermostat and the data analysis software.The elastic modulus of three samples in different quality factors are measured at room temperature, and the effects influencing the measurement are investigated. The resonant frequency matching error (RMS) of 0.04% has been reached with the measurements by the developed setup. The results agree well with those of the global advanced commercial instruments. In addition, bearing steel（9Cr18）are measured at temperature from 293 K to 353 K for isothermal compressibility. The system is capable to measure the elastic modulus of solids at temperature up to 500 K at anti-oxidation atmosphere. After redesigning the ultrasonic signaling and detection system, it is capable for measurements at higher temperature.
鲍静,冯晓娟,林鸿,张金涛,齐晓风,李小亭. 可变温的固体材料弹性参数测量系统研究[J]. 计量学报, 2015, 36(5): 449-454.
BAO Jing,FENG Xiao-juan,LIN Hong,ZHANG Jin-tao,QI Xiao-feng,LI Xiao-ting. Study on the Setup for Measurement of Temperature-dependent Elastic Properties of Solids. Acta Metrologica Sinica, 2015, 36(5): 449-454.
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2015, Vol. 36 
