Optimization of Guided Wave Array for Inspection of Large Plate Structures

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The paper describes a general approach for processing data from a guided wave transducer array on a plate-like structure. The problem of finding optimal array element layout, which allows the number of elements and amount of measured data to be minimized without compromising array performance, is considered. It is shown that in the case of the far field imaging the image can be reconstructed using much fewer array elements than the classical Nyquist–Shannon sampling theorem requires. A new sampling criterion is derived and an optimised sparse array layout is proposed. The theory is validated experimentally using a guided wave array containing electromagnetic acoustic transducer elements for exciting and detecting the S 0 Lamb wave mode in a 3-mm-thick aluminum plate.
Original languageEnglish
Title of host publication42nd annual review of progress in quantitative nondestructive evaluation
Subtitle of host publicationIncorporating the 6th European-American workshop on reliability of NDE
PublisherAmerican Institute of Physics (AIP)
Number of pages9
ISBN (Print)9780735413535
DOIs
Publication statusPublished - 10 Feb 2016

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
Volume1706
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

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