Characteristic Research on Focused Acoustic Field of Linear Phased Array Transducer

摘要：

Using pulse-echo method,the defects of inspected specimens,such as cracks,inclusions,porosities,can be tested with ultrasonic phased array technique. Phased array transducer can realize the conversion between sound wave and electric signal,its characteristic of acoustic field is the most important factor whether the echo information of the inspected area in a specimen can be obtained and utilized effectively,and it is the main basis of designing a phased array. In this paper a mathematical model was presented to simulate the characteristic of focused acoustic field radiated from an ultrasonic linear phased array on the basis of the Huygens principle. Based on the model,studies on beam focusing directivity were conducted by analyzing the effects of various transducer parameters systematically. Finally,the designing principle of linear array transducer was given.

关键词： linear phased array ultrasonic transducer focused acoustic field directivity

作者: Huang Jing Zhou She-yu Zhou Shi-guan Que Pei-wen

作者单位: School of Electronic and computer Information Engineering,Ningbo University of Technology,Ningbo,315 Institute of Automatic Detection,Shanghai Jiaotong University,Shanghai,200240

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1869-1874

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）