CAJ | 학술논문

结合圆柱体工件内部缺陷超声检测的实际情况，采用多元高斯声束模型仿真了检测时超声波的三维声场分布。针对水浸式超声检测原理，将超声传播的过程分解成探头发射、液体耦合介质中的传播、液固界面处的传播和固体工件中的传播等4个阶段，建立了传播过程中的声场模型并得出仿真结果。分析了三维坐标体系中不同方向的声场变化情况，结果表明采用多元高斯声束模型模拟三维声场的有效性和准确性，研究的结果对于实际圆柱体工件的内部缺陷检测提供理论依据。
결합원주체공건내부결함초성검측적실제정황，채용다원고사성속모형방진료검측시초성파적삼유성장분포。침대수침식초성검측원리，장초성전파적과정분해성탐두발사、액체우합개질중적전파、액고계면처적전파화고체공건중적전파등4개계단，건립료전파과정중적성장모형병득출방진결과。분석료삼유좌표체계중불동방향적성장변화정황，결과표명채용다원고사성속모형모의삼유성장적유효성화준학성，연구적결과대우실제원주체공건적내부결함검측제공이론의거。
In combination with the cylinder actual Defect detection requirements,this paper adopts the multi-Gaussian beam model to simulate 3D sound filed distribution of ultrasonic testing. According to theory of water immersion ultrasonic detection,the peocess have four phases what are ultrasonic probe emission ,fluid coupling medium transmission,the spread of solid-liquid interface and solid workpiece ,the model is established and the simulation results are obtained. The different directions of sound field changes in 3D coordinate is analyzed. The results show that multi-gaussian beam model is effective and accurate in simulating the 3D sound field .The result provides a theoretical basis for the defect detection of cylinder workpiece.