Time-domain hybrid global-local prediction of guided waves interaction with damage

Matthieu Gresil, Victor Giurgiutiu

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

3 Citations (Scopus)

Abstract

This paper presents a hybrid finite element and analytical method to predict the 1-D guided wave propagation interaction with damage for nondestructive evaluation (NDE) and structural health monitoring (SHM) application. The finite element mesh is used to describe the region around the damage (defects or flaws). In contrast to other hybrid models developed elsewhere, the interaction between Lamb waves and defects is computed in the time domain using the explicit solver of the commercial finite element method (FEM) software ABAQUS. Analytical methods can perform efficient modeling of wave propagation but are limited to simple geometries. Realistic structures with complicated geometries are usually modeled with the FEM. However, to obtain an accurate wave propagation solution at ultrasonic frequencies is computationally intensive and may become prohibitive for realistic structures. In response to today's complex cases not covered by the simulation tools available, we aim to develop an efficient and accessible tool for SHM applications. This tool will be based on a hybrid coupling between analytical solutions and time domain numerical codes. Lamb wave interaction with a notch is investigated by using this method, and the results obtained are with respect to transmission, reflection and mode conversion. Because of the symmetric mode shape, S0 is more sensitive to the shallow notch than A0. By making use of the fact that the reflection increases with increase in notch depth and mode conversion are maximized when the notch is around half through the thickness of the plate, the reflection and conversion coefficients can be used to characterize the depth of the notch.

Original languageEnglish
Title of host publicationStructural Health Monitoring
Subtitle of host publicationResearch and Applications
Pages116-127
Number of pages12
DOIs
Publication statusPublished - 26 Jul 2013
Externally publishedYes
EventAsia-Pacific Workshop on Structural Health Monitoring 2012 - RACV Club, Melbourne, Australia
Duration: 5 Dec 20127 Dec 2012
Conference number: 4th
https://eprints.usq.edu.au/22740/8/SHM2012.pdf (Call for Papers)

Publication series

NameKey Engineering Materials
Volume558
ISSN (Print)1013-9826

Workshop

WorkshopAsia-Pacific Workshop on Structural Health Monitoring 2012
Abbreviated titleAPWSHM 2012
CountryAustralia
CityMelbourne
Period5/12/127/12/12
OtherProceedings were published in
Key Engineering Materials:
Structural Health Monitoring: Research and Applications
scientific.Net
Internet address

Keywords

  • Finite element method
  • Guided wave
  • Hybrid global-local
  • Piezoelectric wafer active sensor
  • Structural health monitoring

Cite this

Gresil, M., & Giurgiutiu, V. (2013). Time-domain hybrid global-local prediction of guided waves interaction with damage. In Structural Health Monitoring: Research and Applications (pp. 116-127). (Key Engineering Materials; Vol. 558). https://doi.org/10.4028/www.scientific.net/KEM.558.116