Guided wave based nondestructive analysis of localized inhomogeneity effects in an advanced sandwich composite structure

Shirsendu Sikdar, Sauvik Banerjee

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12 Citations (Scopus)

Abstract

In this paper, we present a nondestructive analysis of localized inhomogeneity effects on guided wave propagation in an advanced sandwich composite structure. In the process, guided wave dispersion curves were semi-analytically determined for the structure to accurately identify different wave modes in experimental and numerical analysis signals. Finite element simulation of wave propagation in the target structure was then carried out in ABAQUS and validated with the experiment. Significant influences on the wave mode amplitudes were observed due to the presence of a localized inhomogeneity in the structure. An inhomogeneity identification strategy was prepared based on the amplitude changes in the registered guided wave signals from a predefined piezoelectric transducer network. The influence of varying elastic modulus and mass-density of the inhomogeneous region on the wave mode amplitudes and the corresponding inhomogeneity-index magnitudes were also studied.

Original languageEnglish
Article number107195
JournalComposites Part B: Engineering
Volume176
Early online date13 Jul 2019
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • Advanced sandwich composite structure
  • Dispersion
  • Guided wave
  • Localized inhomogeneity
  • Non-destructive analysis
  • Piezoelectric transducer

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