Damage detection in composite structures using Lamb wave analysis and time-frequency approach

Yingtao Liu, Masoud Yekani Fard, Seung B. Kim, Aditi Chattopadhyay, Derek Doyle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

A methodology based on Lamb wave analysis and time-frequency signal processing has been developed for damage detection and structural health monitoring of composite structures. Because the Lamb wave signals are complex in nature, robust signal processing techniques are required to extract damage features. In this paper, Lamb wave mode conversion is used to detect the damage in composite structures. Matching pursuit decomposition algorithm is used to represent each Lamb wave mode in the time-frequency domain. Results from numerical Lamb wave propagation simulations and experiments using orthotropic composite plate structures are presented. The capability of the proposed algorithm is demonstrated by detecting seeded delaminations in the composite plate samples. The advantages of the methodology include accurate time-frequency resolution, robustness to noise, high computational efficiency and ease of post-processing.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
DOIs
StatePublished - May 26 2011
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011 - San Diego, CA, United States
Duration: Mar 7 2011Mar 10 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7981
ISSN (Print)0277-786X

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
CountryUnited States
CitySan Diego, CA
Period3/7/113/10/11

Keywords

  • Damage estimation
  • Lamb wave
  • matching pursuit decomposition
  • mode conversion
  • structural health monitoring
  • time-frequency analysis

ASJC Scopus subject areas

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

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  • Cite this

    Liu, Y., Yekani Fard, M., Kim, S. B., Chattopadhyay, A., & Doyle, D. (2011). Damage detection in composite structures using Lamb wave analysis and time-frequency approach. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011 [79813N] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7981). https://doi.org/10.1117/12.880664