| Original Articles |
|
|
|
|
Radiation Acoustic Field of a Linear Phased Array on a Cylindrical Surface |
| DENG Fang-Qing1;ZHANG Bi-Xing1;WANG Dong1;SONG Gong-Pu2 |
| ¹Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080
²China Oilfield Services Limited, Beijing 101149 |
|
| Cite this article: |
|
DENG Fang-Qing, ZHANG Bi-Xing, WANG Dong et al 2006 Chin. Phys. Lett. 23 3297-3300 |
|
|
|
|
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
|
|
|
Published: 01 December 2006
|
|
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
