摘要
开设了超声波专题设计综合实验,测量得空气、水和白油中超声波传播速度,研究了同一介质中接收到的交变电压随传播距离的变化规律,空气、水和白油中超声波的损耗系数,水中超声波的损耗系数最大。使用Origin软件直线拟合,对实验结果进行分析和评价。
The comprehensive experiment of ultrasonic wave is designed. The spread velocities of ultrasonic wave are measured in the air, water and white oil respectively. The peak values of the received alternating voltage weaken gradually with the increasing of spread distances and the attenuation amplitude of Ultrasonic wave in the water. The variation of alterating voltage vs spread distances received in the same medium is studied. The loss coefficients of ultrasonic wave in the air, water and white ovl also are studied, and the loss coefficient of Ultrasonic wave in the water is biggest. Linear fitting is carried out using the Origin software in order to analysize and evaluate the experimental results.
出处
《大学物理实验》
2014年第3期87-90,共4页
Physical Experiment of College
基金
大连大学2013年度教改项目(2013-126G1)
关键词
超声波
传播速度
损耗系数
ultrasonic wave
spread velocity
loss coefficient
