Guidelines for using the finite element method for modeling guided Lamb wave propagation in SHM processes

M. Gresil, V. Giurgiutiu, Y. Shen, B. Poddar

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

15 Citations (Scopus)

Abstract

The aim of the work presented in this paper is to provide guidelines for extending the modeling capacities and improve quality and reliability of 2-D guided wave propagation models using commercially available finite element method (FEM) packages. Predictive simulation of ultrasonic nondestructive evaluation (NDE) and structural health monitoring (SHM) in realistic structures is challenging. Analytical methods can perform efficiently modeling of wave propagation are limited to simple geometries. Realistic structures with complicated geometries are usually modeled with the finite element method (FEM). Commercial FEM codes offer convenient built-in resources for automated meshing, frequency analysis, as well as time integration of dynamic events. We propose to develop FEM guidelines for 2-D Lamb wave propagation with a high level of accuracy. The proposed 2-D guided wave problem will be the pitch-catch arrangement in a full 3-D geometry plate involving guided waves between a transmitter piezoelectric wafer active sensor (PWAS) and receiver P WAS. In addition, corrosion damage is added to this problem to simulate the detection of damage, and assess the detectability threshold. The general approach is to run a series of FEM models. These FEM models will be compared with the experimental data and with our 1-D analytical homemade software.

Original languageEnglish
Title of host publicationProceedings of the 6th European Workshop - Structural Health Monitoring 2012, EWSHM 2012
Pages91-98
Number of pages8
Publication statusPublished - 1 Dec 2012
Externally publishedYes
EventEuropean Workshop on Structural Health Monitoring 2012 - Dresden, Germany
Duration: 3 Jul 20126 Jul 2012
Conference number: 6th

Publication series

NameProceedings of the 6th European Workshop - Structural Health Monitoring 2012, EWSHM 2012
Volume1

Conference

ConferenceEuropean Workshop on Structural Health Monitoring 2012
Abbreviated titleEWSHM 2012
CountryGermany
CityDresden
Period3/07/126/07/12

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