Measuring sound velocity in solid medium with dual trace oscilloscope
Measuring sound velocity is an important university physical experiment. It is possible to know the acoustical characteristics of measured medium by testing sound velocity. But few experiments concern time difference method that is abroad in ultrasonic wave industry application. With the sent signal wave chosen as the reference object, it can be compared directly with the receptive signal by twin-complex oscillograph to get the propagation time of ultrasonic sound through the solid medium. So the sound velocity can be calculated. The sound speed is computed with the measured transmitting time and the width of the object. This method is experimentally verified on aluminum cylinder. This measurement method is suitable for experimental teaching for undergraduates in physics. It can be used in the development and study of comprehensive and designed physics experiments. It has the advantages of low cost, newly designed and clear physical conception.
Sound velocity measurement Dual trace oscilloscope Time difference method Ultrasonic sound Medium
Ming-ji Shi Ting Cao Sheng-zhao Wang
Department of Electronics, Nanyang Institute of Technology, Nanyang, He Nan, China
国际会议
北京
英文
338-341
2012-05-19（万方平台首次上网日期，不代表论文的发表时间）