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| 基于小球反射法的超声脉冲波声场特性研究 | |
| 引用本文： | 徐圆飞,徐春广,肖定国,张迪,田恩杰. 基于小球反射法的超声脉冲波声场特性研究[J]. 压电与声光, 2009, 31(6) |
| 作者姓名： | 徐圆飞 徐春广 肖定国 张迪 田恩杰 |
| 作者单位： | 1. 北京理工大学,机械与车辆工程学院,北京,100081;北京航星机器制造公司,北京,100013 2. 北京理工大学,机械与车辆工程学院,北京,100081 3. 北京航星机器制造公司,北京,100013 |
| 基金项目： | 国防科学技术工业委员会"十一五"计量基金资助项目 |
| 摘 要： | 基于对小球散射单频连续波声场指向性的研究,推导出小球散射超声换能器脉冲波声场的指向性函数计算公式,由此建立了小球反射的超声换能器脉冲波声场声压分布理论模型,计算了由不同尺寸的小球反射的声场声压分布.实验验证了指向性函数计算公式和理论模型的正确性,理论计算和实验结果均表明,小球的尺寸对声场声压分布的测量精度有较大影响. |
| 关 键 词： | 超声换能器 小球反射法 脉冲波声场 散射指向性 声压分布 |
Study on the Characters of Ultrasonic Pulse Field Based on the Means of Reflection by Small Ball |
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| XU Yuan-fei,XU Chun-guang,XIAO Ding-guo,ZHANG Di,TIAN En-jie. Study on the Characters of Ultrasonic Pulse Field Based on the Means of Reflection by Small Ball[J]. Piezoelectrics & Acoustooptics, 2009, 31(6) | |
| Authors: | XU Yuan-fei XU Chun-guang XIAO Ding-guo ZHANG Di TIAN En-jie |
| Abstract: | On the basis of the studies about the direction of single frequency continuous acoustic field scattered by small ball,the calculate formula of the directivity function of the scattering acoustic field was discussed,and a theoretical model was proposed to calculate the distribution of sound pressure of ultrasonic pulse field reflected by a small ball.The distributions of sound pressure of ultrasonic pulse field reflected by different small balls were calculated.The correctness of the calculate formula of directivity function and theoretical model were verified by the experiments.It was shown that the size of small ball had serious effects on the precision of measuring the distributions of sound pressure of ultrasonic pulse field through theoretical calculation and experiments. |
| Keywords: | ultrasonic transducer the means of reflection of small ball sound field of pulse wave scattering directivity distributions of sound pressure |
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