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

作　　者：朱旭鹏 廖峻 薛书文 李佳楠 Zhu Xupeng;Liao Jun;Xue Shuwen;Li Jiaqi(Shool of Physics and Technology,Lingnan Normal University,Zhanjiang,Guangdong 524048)

机构地区：[1]岭南师范学院物理科学与技术学院,广东湛江524048

出　　处：《物理通报》2021年第5期107-110,114,共5页Physics Bulletin

基　　金：大学物理教学团队,批准号:114961700249。

摘　　要：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.

关 键 词：驱动频率 换能器谐振 超声波声速 驻波法 相位法 

分 类 号：O3-4[理学—力学] G642[文化科学—高等教育学]