FE simulation of the indentation deformation of SiC modified vinylester composites in respect to their abrasive wear performance

David Felhos, R. Prehn, K. Váradi, A. K. Schlarb

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The abrasive sliding friction and wear behaviours of silicon carbide (SiC) filled vinylester (VE) composites were investigated. The average grain size of the incorporated SiC particles was varied, holding the volume content of them in every case at 16 vol%. Mechanical properties (hardness, compression modulus, yield stress) of the filled and neat VE were determined. The tribological properties were investigated in block (composite) - on - ring (steel) test configuration. The steel counter bodies were covered with abrasive papers of different graining. Coefficient of friction (COF) and specific wear rate of the VE + SiC composites were determined. It was observed that the wear resistance increases with increasing average filler grain size and with decreasing abrasiveness of the counter surface. The COF of the VE + SiC composites is independent of the size of the incorporated particles, but it is strongly influenced by the abrasiveness of the counter body. The worn surfaces of the VE + SiC systems were analysed in scanning electron microscope (SEM) to deduce the typical wear mechanisms. The size effect of the SiC filler particles onto the abrasive wear characteristics was investigated by assuming that the roughness peaks of the abrasive paper and the indenter of the microhardness test cause similar micro scaled contact deformations in the composites. Therefore FE method was used to simulate the micro scaled deformation process in the VE + SiC systems during microindentation tests. The FE results provided valuable information on how to explain the size effect of the incorporated SiC filler.

Original languageEnglish
Pages (from-to)705-717
Number of pages13
JournalExpress Polymer Letters
Volume2
Issue number10
DOIs
Publication statusPublished - Oct 1 2008

Keywords

  • Abrasive wear
  • Modelling and simulation
  • Polymer composites
  • Reinforcements
  • Thermosetting resins

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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