Prediction of the residual tensile strength after solid particle erosion of UD-GF/PP composites

N. M. Barkoula, J. Karger-Kocsis, G. C. Papanicolaou

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10 Citations (Scopus)


In the present work the residual tensile strength of unidirectional (UD) glass fibre (GF) reinforced thermoplastic polypropylene (PP) composites after oblique (30°) solid particle erosion was investigated as a function of the impact time and relative fibre orientation (parallel, Pa and perpendicular, Pe). A semi-empirical approach initially developed to predict the residual tensile strength after single normal impact and latest successfully adopted for thermosetting carbon fibre/epoxy (CF/EP) composites worked well for the thermoplastic UD-GF/PP composites studied. A very good agreement was found between the experimental results at 30° erosion angle and the theoretical prediction in both Pa and Pe erosion directions. A comparison of the strength degradation behaviour of UD-GF/PP and CF/EP composites showed that UD-GF/PP presented the onset of its strength degradation considerably earlier but it preserved a higher relative residual tensile strength than CF/EP. The erosion direction in UD-GF/PP had marginal effect on the energy threshold resulting in severe strength degradation, whereas it showed a pronounced effect on the residual tensile strength.

Original languageEnglish
Pages (from-to)1745-1756
Number of pages12
JournalJournal of Composite Materials
Issue number14
Publication statusPublished - Aug 27 2002



  • Erosion direction
  • GF/PP composites
  • Modelling
  • Residual properties
  • Solid particle erosion

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

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