Analysis and design of wedge transducers using the boundary element method
نویسندگان
چکیده
Cones or wedges inserted between an ultrasonic transducer and a specimen enhances certain characteristics of the transducers. Such an arrangement is useful in that the transducer can be used for transmitting and receiving signals on a point ~or line! source, which can eliminate the undesirable aperture effect that makes the transducer blind to waves traveling in certain directions and to those of certain frequencies. In this paper, a comprehensive numerical analysis based on a wave propagation model is carried out to study the characteristics and parameters of wedges. We study the effect of dimensions, shape and aperture on frequency response and directivity. For computational accuracy and efficiency, the boundary element method is used in the analysis. © 2004 Acoustical Society of America. @DOI: 10.1121/1.1737738#
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