Focusing Modeling of OPFC Linear Array Transducer by Using Distributed Point Source MethodReportar como inadecuado




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Abstract and Applied Analysis - Volume 2014 2014, Article ID 840748, 11 pages -

Research ArticleFaculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013, China

Received 28 January 2014; Accepted 22 February 2014; Published 16 April 2014

Academic Editor: Baojian Hong

Copyright © 2014 Ziping Wang and Ying Luo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The improvement of ultrasonic phased array detection technology is a major concern of engineering community. Orthotropic piezoelectric fiber composite OPFC can be constructed to multielement linear array which may be applied conveniently to actuators and sensors. The phased array transducers can generate special directional strong actuator power and high sensitivity for its orthotropic performance. Focusing beam of the linear phased array transducer is obtained simply only by adjusting a parabolic time delay. In this work, the distributed point source method DPSM is used to model the ultrasonic field. DPSM is a newly developed mesh-free numerical technique that has been developed for solving a variety of engineering problems. This work gives the basic theory of this method and solves the problems from the application of new OPFC phased array transducer. Compared with traditional transducer, the interaction effect of two OPFC linear phased array transducers is also modeled in the same medium, which shows that the pressure beam produced by the new transducer is narrower or more collimated than that produced by the conventional transducer at different angles. DPSM can be used to analyze and optimally design the OPFC linear phased array transducer.





Autor: Ziping Wang and Ying Luo

Fuente: https://www.hindawi.com/



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