超声功率谱高低频延伸实验研究  

Experiment of higher and lower frequency stretching in ultrasonic power spectrum

作　　者：罗长勋 马玉英[1] 丁大成[1] 闵一健 罗炜[1] 

机构地区：[1]陕西师范大学物理学系,陕西师范大学应用声学研究所

出　　处：《陕西师大学报（自然科学版）》1995年第4期29-32,共4页Journal of Shaanxi Normal University(Natural Science Edition)

摘　　要：测试了超声换能器在外加谐频条件下的声波辐射；发现较高频与较低频延伸之间的频率是相互关联的；经过综合归纳，得到超声频率方程，并用其它类型超声换能器作检验，证明该方程是正确的．Through analysing test and measurment data of sonic wave radiation in the condition of adding harmonic vibration frequency at ultrasonic transducer. It is discovered that frequencies between higher and lower frequency stretching are of reciprocity. Using synthetic and inductive methods,the equation of ultrasonic frequency is obtained and the other kinds of ultransonic transductor are used in the experiment many times, the results of which all suit to the equation.

关 键 词：本征频率 复合频率 声子 超声换能器 频率 

分 类 号：TB552[理学—物理]