Lamb wave based feature extraction of damage in a stiffened composite panel under varying temperature

Anthony J. Vizzini; Aditi Chattopadhyay

doi:10.1117/12.915413

Lamb wave based feature extraction of damage in a stiffened composite panel under varying temperature

Anthony J. Vizzini, Aditi Chattopadhyay

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

This paper presents a methodology for determining the existence of delaminations in complex composite structures. The changes in damage features due to changing temperature are investigated. A Lamb wave based active damage detection technique is used. The Matching Pursuit Decomposition (MPD), a time frequency based signal processing technique, is used for feature extraction. The signals from two different test structures, a healthy specimen and a specimen with seeded delamination, are compared to incorporate the effect of manufacturing variability. Tests are conducted under varying ambient temperature. The results obtained validate the effectiveness of this approach in detecting delamination.

Original language	English (US)
Title of host publication	Health Monitoring of Structural and Biological Systems 2012
DOIs	https://doi.org/10.1117/12.915413
State	Published - Jun 6 2012
Event	Health Monitoring of Structural and Biological Systems 2012 - San Diego, CA, United States Duration: Mar 12 2012 → Mar 15 2012

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8348
ISSN (Print)	0277-786X

Other

Other	Health Monitoring of Structural and Biological Systems 2012
Country/Territory	United States
City	San Diego, CA
Period	3/12/12 → 3/15/12

Keywords

Composites
Delamination detection
Lamb waves
Matching pursuit decomposition
Temperature variability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.915413

Cite this

Lamb wave based feature extraction of damage in a stiffened composite panel under varying temperature. / Vizzini, Anthony J.; Chattopadhyay, Aditi.
Health Monitoring of Structural and Biological Systems 2012. 2012. 83481P (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8348).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Vizzini, AJ & Chattopadhyay, A 2012, Lamb wave based feature extraction of damage in a stiffened composite panel under varying temperature. in Health Monitoring of Structural and Biological Systems 2012., 83481P, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8348, Health Monitoring of Structural and Biological Systems 2012, San Diego, CA, United States, 3/12/12. https://doi.org/10.1117/12.915413

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abstract = "This paper presents a methodology for determining the existence of delaminations in complex composite structures. The changes in damage features due to changing temperature are investigated. A Lamb wave based active damage detection technique is used. The Matching Pursuit Decomposition (MPD), a time frequency based signal processing technique, is used for feature extraction. The signals from two different test structures, a healthy specimen and a specimen with seeded delamination, are compared to incorporate the effect of manufacturing variability. Tests are conducted under varying ambient temperature. The results obtained validate the effectiveness of this approach in detecting delamination.",

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Lamb wave based feature extraction of damage in a stiffened composite panel under varying temperature

Abstract

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Keywords

ASJC Scopus subject areas

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