Numerical investigation on guided wave-based damage identification and severity estimation of timber utility poles

Li, J; Yu, Y; Yan, N; Dackermann, U; Samali, B

Numerical investigation on guided wave-based damage identification and severity estimation of timber utility poles

Li, J

Yu, Y

Yan, N Dackermann, U Samali, B

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Publication Type:: Conference Proceeding
Citation:: SHMII 2015 - 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure, 2015
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Li, J https://orcid.org/0000-0002-2526-3048	en_US
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191	en_US
dc.contributor.author	Yan, N	en_US
dc.contributor.author	Dackermann, U	en_US
dc.contributor.author	Samali, B https://orcid.org/0000-0002-3426-7745	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	SHMII 2015 - 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure, 2015	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36620
dc.description.abstract	© 2015, International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII. All rights reserved. Over the past decades, various non-destructive testing (NDT) methods have been applied for the damage detection and condition assessment of the timber poles. Among them, the guided wave (GW) based methods, which measure stress wave propagation in the poles, are often considered a simple and cost-effective tool which can be potentially used in practice. However, due to the lack of in-depth understanding on wave propagation in timber structures, these methods are generally based on over-simplified assumptions and therefore failed to provide the reliable results. In this paper, the studies on damage identification and severity estimation of timber utility poles were conducted based on the GW-based NDT method. First, wavelet packet energy and natural frequency features of the poles are extracted from the measured GW signals. Novel index was proposed based on such features to determine the damage type of the tested pole. Once damage type is determined, the corresponding models are adopted using the genetic algorithm to describe the relationship between damage severity and feature index. Finally, the numerical results of the timber poles with different damage types and severities are used to demonstrate the effectiveness and reliability of the proposed method.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP110200162
dc.relation.ispartof	SHMII 2015 - 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure	en_US
dc.title	Numerical investigation on guided wave-based damage identification and severity estimation of timber utility poles	en_US
dc.type	Conference Proceeding
dc.location.activity	Torino, Italy
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

© 2015, International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII. All rights reserved. Over the past decades, various non-destructive testing (NDT) methods have been applied for the damage detection and condition assessment of the timber poles. Among them, the guided wave (GW) based methods, which measure stress wave propagation in the poles, are often considered a simple and cost-effective tool which can be potentially used in practice. However, due to the lack of in-depth understanding on wave propagation in timber structures, these methods are generally based on over-simplified assumptions and therefore failed to provide the reliable results. In this paper, the studies on damage identification and severity estimation of timber utility poles were conducted based on the GW-based NDT method. First, wavelet packet energy and natural frequency features of the poles are extracted from the measured GW signals. Novel index was proposed based on such features to determine the damage type of the tested pole. Once damage type is determined, the corresponding models are adopted using the genetic algorithm to describe the relationship between damage severity and feature index. Finally, the numerical results of the timber poles with different damage types and severities are used to demonstrate the effectiveness and reliability of the proposed method.

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http://hdl.handle.net/10453/36620