合成孔径聚焦超声成像的有限元数值仿真  

SYNTHETIC APERTURE FOCUSING ULTRASOUND IMAGING BASED ON THE FINITE ELEMENT NUMERICAL SIMULATION

作　　者：顾建祖[1] 李冰[1] 王自平[1] 

机构地区：[1]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《物理与工程》2013年第5期45-50,共6页Physics and Engineering

基　　金：国家高技术研究发展计划(863)2009AA03Z107

摘　　要：基于有限元数值方法,通过COMSOL Multiphysics软件,从二维角度建立超声相控阵合成孔径聚焦技术(SAFT)仿真成像几何模型,计算得到16阵元OPCM正交异性超声相控阵探头在不同时刻的声场分布图、缺陷回波信号图和缺陷成像,并与超声相控阵仪的实验成像结果作对比,验证了仿真模型的正确性.Abstract Based on the finite element numerical method, We established the two dimensional ultrasonic phased array model by the COMSOL echo signal diagram and 16 elements at different synthetic aperture focusing technique （SAFT） si Multiphysics software. We obtained the sound field defect imaging of the orthotropic ultrasonic phased times. The simulation results were compared with mulation imaging distribution, flaw array probe with the experiments,which verified the accuracy of the simulation model.

关 键 词：超声相控阵 有限元数值方法 仿真成像 SAFT 

分 类 号：O426[理学—声学] O241.82[理学—物理]