大学普通力学实验中驱动频率对声速测量结果的影响

The Influence of Driving Frequency on Sound VelocityMeasurement in General Mechanics Experiment of University

通过选择不同的驱动频率(包括最强、次强谐振频率,非谐振频率),同时利用驻波法和相位法研究大学普通力学实验中驱动频率对超声波声速测量结果的影响,这一结果在提高实验教师对超声波声速测量过程的理解、把控学生实验数据、解惑学生问题等方面具有一定的意义.

This paper uses the standing wave method and the phase method to study the influence of the driving frequency on the ultrasonic sound velocity measurement results in the university general mechanics experiment by selecting different driving frequencies,including the strongest and second strongest resonant frequencies and non resonant frequencies,etc.The results in this paper have a certain meaning to improve the teacher′s understanding of the ultrasonic sound velocity measurement process,correct the students′experimental data and solve student′s problems.