Mode I fracture resistance of glass fiber mat-reinforced polypropylene composites at various degree of consolidation

Oleg I. Benevolenski, József Karger-Kocsis, Tibor Czigány, Gábor Romhány

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The energy release rate at steady-state fracture of glass fiber mat-reinforced polypropylene (GMT-PP) composites of different degree of consolidation was determined by various methods considering the mechanical energy (Gss), acoustic emission energy (GAE) and heat (Gh) release rates. All these energy release rates showed the same tendency, namely increase with increasing surface weight (consolidation degree) of the GMT-PP sheets. To determine the initiation fracture toughness (KIC) the resistance curve concept was adopted. KIC increased whereas the related strain energy release rate (GIC) did not change with the consolidation degree.

Original languageEnglish
Pages (from-to)267-273
Number of pages7
JournalComposites Part A: Applied Science and Manufacturing
Issue number3
Publication statusPublished - Mar 1 2003



  • A. Glass fibers
  • B. Fracture toughness
  • B. Mechanical properties
  • Consolidation degree
  • D. Acoustic emission

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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