Scattering Analysis of Lamb Waves at Subsurface Cracks in Isotropic Plates

Christoph Humer, Christoph Kralovec, Martin Schagerl

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings

Abstract

The present work investigates the scattering behavior of a circular subsurface crack in isotropic material for an incident asymmetric A0 Lamb wave by a finite element (FE) model. This local FE model is designed according to the combined analytical finite element approach (CAFA) and uses a steady-state analysis in combination with non-reflective boundaries (NRB). The basic idea of CAFA is presented and the used FE model is explained in detail. The crack parameters size and depth are varied and the dependency of the scattered wave field on these parameters is analyzed by comparing the wave damage interaction coefficients (WDICs). The comparison of the WDICs show dependencies on the crack parameters for particular directions and observed trends are reported. Furthermore, conclusions on the future applications of found results are given.
Original languageEnglish
Title of host publication8th ECCOMAS Thematic Conference on Smart Structures and Materials
Editors Alfredo Güemes et al.
PublisherInternational Center For Numerical Methods in Engineering (CIMNE)
Pages1843-1853
Number of pages11
ISBN (Print)978-84-946909-3-8
Publication statusPublished - 2017

Fields of science

  • 203 Mechanical Engineering
  • 201117 Lightweight design
  • 203011 Lightweight design

JKU Focus areas

  • Mechatronics and Information Processing
  • Engineering and Natural Sciences (in general)

Other files and links

Cite this