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Mechanics of Composite Materials

, Volume 44, Issue 6, pp 549–556 | Cite as

The onset of mixed-mode intralaminar cracking in a cross-ply composite laminate

  • J. Andersons
  • E. Spārniņš
  • R. Joffe
Article

The intralaminar fracture toughness of a unidirectionally reinforced glass/epoxy composite is determined experimentally at several mode I and mode II loading ratios. The crack propagation criterion, expressed as a quadratic form in terms of single-mode stress intensity factors (alternatively, linear in terms of energy release rates), approximates the test results reasonably well. The mixed-mode cracking criterion obtained is used to predict the intralaminar crack on set in a cross-ply glass/epoxy composite under off-axis tensile loading.

Keywords

polymer-matrix composites laminates intralaminar cracking fracture toughness mixed-mode loading 

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Copyright information

© Springer Science+Business Media, Inc. 2008

Authors and Affiliations

  • J. Andersons
    • 1
  • E. Spārniņš
    • 1
  • R. Joffe
    • 2
  1. 1.Institute of Polymer MechanicsUniversity of LatviaLV-1006Latvia
  2. 2.Division of Polymer EngineeringLuleå University of TechnologyLuleåSweden

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