Guided Wave Propagation and Breathing-Debond Localization in a Composite Structure

Shirsendu Sikdar, Wim van Paepegem, Mathias Kersemans

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


Carbon-fibre reinforced composite laminates are extensively used in aerospace, automotive, wind energy and marine engineering structures due to their light-weight advantage, high-energy absorption capability, fire resistance, high stiffness-to-weight ratios and construction flexibilities. This work is mainly focused on the analysis of nonlinear ultrasonic guided wave propagation and breathing-debond source localisation in a stiffened composite structure. In the process, the finite element method based 3D numerical simulations has been carried out on a stiffened composite structure using a preassigned network of piezoelectric transducers (PZT). From the analysis of the results, it is observed that the presence of plate-stiffener breathing-type debonds produces higher-harmonics in the registered PZT signals. Based on the identified differential parameters in the higher-harmonics, the breathing-debond source locations are effectively identified by using a fast and efficient baseline-free SHM strategy that uses Fast-Fourier-Transform of the registered sensor signals from the target structure to detect single as well as multiple breathing-debond locations in the stiffened composite structure.

Original languageEnglish
Title of host publicationEuropean Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
EditorsPiervincenzo Rizzo, Alberto Milazzo
Number of pages9
ISBN (Print)9783030645939
Publication statusPublished - 11 Jan 2021
EventEuropean Workshop on Structural Health Monitoring -
Duration: 6 Jul 20209 Jul 2020

Publication series

NameEuropean Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565


WorkshopEuropean Workshop on Structural Health Monitoring
Abbreviated titleEWSHM 2020


  • Debond
  • Geometric nonlinearity
  • Guided wave
  • Piezoelectric transducer
  • Structural health monitoring

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