Detection of delamination cracks in layered fibre reinforced composite plates

M. R. Karim, T. Kundu

Research output: Contribution to journalConference articlepeer-review


In this paper, the dynamic response of delamination cracks in a layered fiber reinforced 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 delamination cracks. It is investigated here to what extent the surface response is influenced by the presence of internal delamination cracks. 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 cracks opening displacement in a complete set of Chebychev's polynomials, 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)29-35
Number of pages7
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
StatePublished - 1988
EventAdvances in Macro-Mechanics of Composite Material Vessels and Components - Pittsburgh, PA, USA
Duration: Jun 19 1988Jun 23 1988

ASJC Scopus subject areas

  • Mechanical Engineering


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