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Vol. 162, Issue 1, January 2014, pp. 29-37

 

Bullet

 

Optimal Design of Electromagnetic Acoustic Transducer Used to Generate Lamb Wave
 

1 Yan LIU, 2 Yuemin WANG, 2 Longxiang ZHU, 2 Fengrui SUN

1 College of Arts and Science, Naval University of Engineering, Hubei Wuhan, 430033, China
2 College of Ship & Power, Naval University of Engineering, Hubei Wuhan, 430033, China

1 E-mail: greerliu@126.com

 

Received: 12 November 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems

 

Abstract: Electromagnetic ultrasonic transducer is the core component of the electromagnetic ultrasonic testing equipment. This paper establishes a three-dimensional model of the electromagnetic ultrasonic transducer used to generate Lamb wave, then by uniform design experiment and finite element analysis, the paper obtains the law between the eddy current density, the conductor width, length of the coil, the lift off distance, and the permanent magnets thickness. The law is verified by the experiment. It provides an overall principle for the optimal design of electromagnetic ultrasonic transducer.

 

Keywords: EMAT, Lamb wave, Finite element analysis, Optimal design.

 

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