CAJ | 학술논문

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.
기우대소구산사단빈련속파성장지향성적연구,추도출소구산사초성환능기맥충파성장적지향성함수계산공식,유차건립료소구반사적초성환능기맥충파성장성압분포이론모형,계산료유불동척촌적소구반사적성장성압분포.실험험증료지향성함수계산공식화이론모형적정학성,이론계산화실험결과균표명,소구적척촌대성장성압분포적측량정도유교대영향.
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.