An Array Design of Linear Ultrasonic Phased Array Transducer
Using pulse-echo method, the defects of inspected specimens, such as cracks, inclusions, porosities et al, 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 based on a radiating acoustic field of a rectangle piston transducer, a simple algorithm is used to simulate the acoustic field of a single rectangle piston transducer and a linear phased array transducer. By analyzing problems generated in a linear phased array design, the basic design method is provided. With an ultrasonic phased array transducer and a conventional ultrasonic transducer, the scan beam profiles of the artificial defects are compared.
linear phased array acoustic field nondestructive testing
HUANG Jing ZHOU Sheyu ZHOU Shiguan LEI Huaming
School of Electronic and computer Information Engineering, Ningbo University of Technology, Ningbo, Institute of Automatic Detection, Shanghai Jiaotong University, Shanghai, 200240
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）