超声波传播速度与溶液浓度关系的研究  

Research of Relationship between Velocity of Ultrasonic Wave and Solution Concentration

作　　者：田红梅[1] 

机构地区：[1]深圳职业技术学院物理实验室,广东深圳518055

出　　处：《顺德职业技术学院学报》2008年第4期20-23,共4页Journal of Shunde Polytechnic

基　　金：深圳职院技术学院校级科研项目(2207K124G0)

摘　　要：利用超声光栅测量声速原理,针对不同浓度的食盐(NaCl)和葡萄糖(C6H12O6)溶液,详细研究了超声波声速与溶液浓度的关系。实验结果表明,由0%至饱和范围,声速随浓度的增加单调递增,并显现出良好的线性关系。通过规划分析,得到25℃下声速与浓度的线性规划方程。溶液浓度每升高1%,超声波在食盐溶液中的传播速度提高10.777m/s,在葡萄糖溶液中的传播速度提高3.1863m/s。论文将线性回归方法应用于超声光栅实验数据处理,并且提出了一种测量液体浓度的新方法。Based on the principle of ultrasonic grating, the relationship between velocity of ultrasonic wave and the concentration of solution is studied for salt solution （NaC1） and glucose solution （C6H1206）. Experimental results show within the scope of 0% to saturation, velocity of sound increases monotonously with the increase of concentration. The velocity and the concentration have a fine linear relationship. By linear programming, formula of the velocity-concentration is derived at 25℃. When solution concentration is increased by 1%, velocities of ultrasonic waves will increase 10.777 m/s in salt solution and 3.186 3 m/s in glucose solution respectively. In addition, linear regression analysis is used in data reduction at ultrasonic grating experiment, and a new method to measure the concentration of liquid is presented.

关 键 词：超声波 声速 超声光栅 溶液浓度 

分 类 号：TB559[理学—物理]