Structural health monitoring and damage detection in composite panels with multiple stiffeners

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

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

9 Scopus citations

Abstract

The propagation characteristics of Lamb waves in stiffened carbon fiber polymer matrix composite panels are investigated. In particular, the group velocities of S0 and A0 modes are calculated, the attenuation of Lamb waves induced by stiffeners and delaminations are evaluated, and the angular dependence of group velocity is subsequently examined. A two step damage detection and characterization approach, which uses both pulse-echo and pitch-catch active sensing schemes, is presented for the identification of delaminations in the stiffened composite panels. The matching pursuit decomposition algorithm is used for the representation of the sensor signal in the time-frequency domain. The delaminations are detected by identifying the converted Lamb wave modes in the time-frequency domain. The results confirm that the proposed approach is able to effectively identify the presence of seeded delaminations in complex composite structures.

Original languageEnglish (US)
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - Dec 1 2011
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: Apr 4 2011Apr 7 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityDenver, CO
Period4/4/114/7/11

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Liu, Y., Yekani Fard, M., Kim, S. B., Chattopadhyay, A., & Doyle, D. (2011). Structural health monitoring and damage detection in composite panels with multiple stiffeners. In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference [AIAA 2011-1859] (Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference). https://doi.org/10.2514/6.2011-1859