Analysis of multiple matrix cracking in [±θm/90n]s composite laminates: Part 2: Development of transverse ply cracks

J. Zhang, J. Fan, C. Soutis

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper the progressive transverse ply cracking in [±θm/90n]s composite laminates is investigated theoretically. A general and simple expression for the energy release rate due to transverse matrix cracking is obtained using the potential energy approach in classical fracture mechanics and the assumption of a through-the-thickness flaw; thermal residual stresses are taken into account. The laminate resistance to crack multiplication is examined for both uniform and nonuniform crack spacing by substituting the measured applied stress/crack density data into corresponding energy release rate expressions. The resistance curve concept is employed to predict crack growth with increasing applied load. The results indicate that the assumption of uniform cracking and a resistance curve concept is a convenient and acceptable method for modelling crack initiation and multiplication in composite laminates.
Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalComposites
Volume23
Issue number5
DOIs
Publication statusPublished - 1 Sept 1992

Keywords

  • composite materials
  • cross-ply laminates
  • transverse ply cracking
  • energy release rate
  • resistance curve
  • crack density
  • crack spacing parameter
  • modelling

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