Stress and failure analysis of a glass-epoxy composite plate with a circular hole - Experimental techniques of moire, strain gages and birefringent coating, as well as finite-element numerical analysis, are employed to analyze the anisotropic state of stress, strain and fracture associated with a uniaxially loaded glass-epoxy composite plate containing a circular hole

R. E. Rowlands*, I. M. Daniel, J. B. Whiteside

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Experimental and finite-element analyses are presented for the anisotropic states of stress, strain and fracture of a glass-epoxy plate containing a circular hole and subjected to uniaxial tension. Strains were experimentally measured using foil gages, moiré and birefringent coating. Stresses are computed in the linear range from the measured strains. While the hole reduces the plate strength by a factor of two, the maximum tensile strain at fracture is greater than the ultimate strain in a plate without a hole. Fracture consists of crack initiation at the hole boundary but off the horizontal axis. Away from the hole, failure is accompanied by considerable delamination. Discontinuous crack propagation is present.

Original languageEnglish (US)
Pages (from-to)31-37
Number of pages7
JournalExperimental Mechanics
Volume13
Issue number1
DOIs
StatePublished - Jan 1 1973

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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