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Radiation Acoustic Field of a Linear Phased Array on a Cylindrical Surface
作者姓名:邓方青  张碧星  王东  宋公仆
作者单位:[1]Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 [2]China Oilfield Services Limited, Beijing 101149
基金项目:Supported by the National Natural Science Foundation of China under Grant No 10374098.
摘    要:

关 键 词:圆柱表面  线性超声定相阵  辐射声场  超声换能器
收稿时间:2006-08-28
修稿时间:2006-08-28

Radiation Acoustic Field of a Linear Phased Array on a Cylindrical Surface
DENG Fang-Qing,ZHANG Bi-Xing,WANG Dong,SONG Gong-Pu.Radiation Acoustic Field of a Linear Phased Array on a Cylindrical Surface[J].Chinese Physics Letters,2006,23(12):3297-3300.
Authors:DENG Fang-Qing  ZHANG Bi-Xing  WANG Dong  SONG Gong-Pu
Institution:1.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080;2.China Oilfield Services Limited, Beijing 101149
Abstract:A new linear ultrasonic phased array fixed on a cylindrical surface is designed. This kind of the cylindrical phased array can meet the specific requirements of the application in testing pipe quality inside pipes. Using the transducer, we can not only avoid mechanical rotating but also test the quality of any point in a pipe by ultrasonic phase array technology. The focused acoustic field distributions in the axial, radial and tangential directions of the transducer are investigated theoretically by numerical simulation. The energy flux density, the width of the main lobe, the imaging resolution, the grating lobe elimination and other characteristics are analysed. The effect of the focal distance, effective aperture, transducer radius, number of total element, and steering angle on the acoustic field distribution is also studied.thoroughly. Many important results are obtained.
Keywords:43  58  +z  43  40  +s
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