摘要
在室温条件下,利用压电陶瓷片在高频信号源产生交变电场作用下获得超声波,超声波在液体中传播形成超声光栅。在光具座上利用准直透镜和测微目镜组成的望远系统替代了分光计,完成了对在不同浓度的甘油溶液中形成的光栅光谱宽度的测量,并结合光栅方程计算出超声声速。运用线性回归方程得出了超声波声速与溶液浓度的关系。结果表明:该方法与其他测量方法测量结果一致,即声速与溶液浓度呈线性关系。
At room temperature,ultrasonic wave was obtained by the vibration of piezoelectric ceramic under the action of alternating electric field generated by high-frequency signal source,ultrasonic grating was formed by ultrasonic propagation in liquid.On the optical bench,the telescopic system composed of collimating lens and micrometer eyepiece was used instead of the spectrometer.The grating spectra formed in glycerol solutions with different mass fraction were measured on a new simple experimental device.Thus,the sound velocity in the solution was calculated,and the ultrasonic sound velocity was obtained by using the linear regression equation combined with the grating equation.
作者
许巧平
XU Qiao-ping(College of Physics and Electronic Information,Yan'an University,Yan'an 716000,China)
出处
《当代化工》
CAS
2021年第12期2801-2804,2809,共5页
Contemporary Chemical Industry
基金
国家自然科学基金,高阻尼多机制协同分子/CuAlNi复合材料构建及其阻尼机理研究(项目编号:52061038)。
关键词
超声光栅
衍射
甘油溶液
浓度
声速
Ultrasonic grating
Diffraction
Glycerite
Concentrations
Sound velocity
