Please use this identifier to cite or link to this item:
Title: Design of interdigital transducers for crack detection in plates
Authors: Jin, J.
Quek, S.T. 
Wang, Q.
Keywords: Crack geometry
Interdigital transducer
Lamb wave
Mobile double-sided
NDE strategy
Issue Date: May-2005
Source: Jin, J., Quek, S.T., Wang, Q. (2005-05). Design of interdigital transducers for crack detection in plates. Ultrasonics 43 (6) : 481-493. ScholarBank@NUS Repository.
Abstract: Interdigital transducers (IDT) for non-destructive evaluation (NDE) of cracks in plates are designed based on an analytical model established previously. Key considerations include mode selectivity, excitation strength, collimation of wave and cost. The advantage of mode selectivity of IDT over PZT patch is presented both analytically and experimentally. Effects of parameters, namely finger spacing, width, length, number of fingers, and the size of IDT, on the excitation strength and mode selectivity are considered. This led to the design of a mobile double-sided IDT as an efficient device where excitation strength is strong and focused. The device was fabricated in-house using commercially available piezoelectric ceramics and used to develop a procedure for accurate identification of the direction and extent of cracks in plates. Three aluminum plates, one with a linear deep crack, another with a piecewise linear shallower crack and the third with a curved crack, were used to illustrate the accuracy and efficiency of both the proposed device and procedure for effective NDE. © 2004 Elsevier B.V. All rights reserved.
Source Title: Ultrasonics
ISSN: 0041624X
DOI: 10.1016/j.ultras.2004.09.005
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 7, 2018


checked on Feb 5, 2018

Page view(s)

checked on Mar 11, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.