Detection of delamination cracks in layered fiber-reinforced composite plates

M. R. Karim, T. Kundu, G. S. Desai

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

In this paper, the dynamic response of delamination cracks in a layered fiberreinforced composite plate is analytically studied. The plate is subjected to an antiplane loading and its surface response is computed in absence as well as in presence of delaminatioin cracks. To what extent the surface response is influenced by the presence of internal delamination cracks is investigated here. This study is important for nondestructive evaluation of internal damage in composites due to delamination. The problem is formulated in terms of integral equations in frequency domain. These equations are then solved by expanding the unknown crack opening displacement in a complete set of Chebychev’spolynomials, whose coefficients are solved by satisfying the traction-free condition at the crack surface. The time histories are obtained numerically by inverting the spectra via Fast Fourier Transform (FFT) routine. The results show significant influence of delamination crack geometries on the surface response of the plate.

Original languageEnglish (US)
Pages (from-to)165-171
Number of pages7
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume111
Issue number2
DOIs
StatePublished - May 1989

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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