Acoustic emission source location on large plate-like structures using a local triangular sensor array

D Aljets; A Chong; Steven Wilcox; K Holford

doi:10.1016/j.ymssp.2012.01.012

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Acoustic emission source location on large plate-like structures using a local triangular sensor array

Journal article

Peer reviewed

Acoustic emission source location on large plate-like structures using a local triangular sensor array

D Aljets, A Chong, Steven Wilcox and K Holford

Mechanical Systems and Signal Processing, Vol.30, pp.91-102

2012

DOI: https://doi.org/10.1016/j.ymssp.2012.01.012

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Abstract

acoustic emission (AE)

source location

local tringular sensor array

modal analysis

wave move arrival time

A new acoustic emission (AE) source location method was developed for large plate-like structures, which evaluates the location of the source using a combined time of flight and modal source location algorithm. Three sensors are installed in a triangular array with a sensor to sensor distance of just a few centimeters. The direction from the sensor array to the AE source can be established by analysing the arrival times of the A 0 component of the signal to the three sensors whilst the distance can be evaluated using the separation of S 0 and A 0 mode at each sensor respectively. The close positioning of the sensors allows the array to be installed in a single housing. This simplifies mounting, wiring and calibration procedures for non-destructive testing (NDT) and structural health monitoring (SHM) applications. Furthermore, this array could reduce the number of sensors needed to monitor large structures compared to other methods. An automatic wave mode identification method is also presented. © 2012 Elsevier Ltd.

Details

Title: Acoustic emission source location on large plate-like structures using a local triangular sensor array
Authors: D Aljets (Author) - University of Glamorgan
A Chong (Author) - University of Glamorgan
Steven Wilcox (Author) - University of Glamorgan
K Holford (Author) - Cardiff University
Publication details: Mechanical Systems and Signal Processing, Vol.30, pp.91-102
Publisher: Academic Press
Date published: 2012
DOI: 10.1016/j.ymssp.2012.01.012
ISSN: 0888-3270; 1096-1216; 0888-3270
Organisation Unit: Office of the Deputy Vice-Chancellor (Academic); University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99513806302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Engineering, Mechanical