| A simple algorithm to calculate the pulsed sound field of a wide-band linear phased array |
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| 作者姓名： | 黄晶 阙沛文 张志钢 雷华明 金建华 |
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| 作者单位： | School of Electronic and Computer Information Engineering Ningbo University of Technology，Institute of Automatic Detection Shanghai Jiaotong University，Institute of Automatic Detection，Shanghai Jiaotong University，Institute of Automatic Detection，Shanghai Jiaotong University，Institute of Automatic Detection，Shanghai Jiaotong University，Ningbo 315016 China，Institute of Automatic Detection，Shanghai Jiaotong University Shanghai 200030 China，Shanghai 200030 China，Shanghai 200030 China，Shanghai 200030 China，Shanghai 200030 China |
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| 基金项目： | Sponsored by the Foundation of High Technology Research and Development Program of China (Grant No. 2001AA616170). |
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| 摘 要： | Ultrasonic testing is an important nondestructivetesting technique. Because of its strong penetrability,simple facility, convenient use and good security, ithas been wildly used in industry and high-technologyfields. But when testing pieces of complex geometrywith a conventional ultrasonic probe, the testing error isgreater and the ability to detect defects decreases be-cause of the diffusion of the sound field. In order to im-prove defect detectability, it is necessary to scan thetesting obje…
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| 关 键 词： | 线性相控阵 超声换能器 脉冲响应 声场 |
| 文章编号： | 1005-9113（2006）04-0427-04 |
| 收稿时间： | 2003-09-19 |
A simple algorithm to calculate the pulsed sound field of a wide-band linear phased array |
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| HUANG Jing,QUE Pei-wen,ZHANG Zhi-gang,LEI Hua-ming,JIN Jian-hua.A simple algorithm to calculate the pulsed sound field of a wide-band linear phased array[J].Journal of Harbin Institute of Technology,2006,13(4):427-430. |
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| Authors: | HUANG Jing QUE Pei-wen ZHANG Zhi-gang LEI Hua-ming JIN Jian-hua |
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| Abstract: | A simple algorithm using an impulse response for a rectangular piston element is discussed. The impulse response of linear phased array is obtained by summing the impulse responses of rectangular piston elements with different delay times. The output response of the linear wide-band array is equal to the convolution of impulse response functions with wide-band pulse exciting signal. Sound field distributions and impulse responses of three kinds of transducers are compared. The results can be used to optimize the parameters of the linear phased array transducers used in ultrasonic imaging in nondestructive testing (NDT). |
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| Keywords: | linear phased array ultrasonic transducer impulse response sound field |
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