Comparison of the instrumented falling weight impact response of polypropylene composites reinforced by continuous and discontinuous fiber mats

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Abstract

The temperature dependent instrumented falling weight impact (IFWI) behavior of glass mat reinforced thermoplastic polypropylene (GMT-PP) composites with continuous (GM-C) and discontinuous (GM-D) fiber mats were studied at three different temperatures: -40°C, room temperature (RT) and +90°C. Apart from the mat type the matrix viscosity and the fiber/matrix adhesion were also varied in the GMT-PP samples. It was established that the mat type is that parameter which controls the fracture and failure behavior. The high perforation impact resistance of GM-C compared to GM-D is due to an efficient stress redistribution via the continuous fibers and rovings within the mat. Effects of the matrix and interface variations could not be detected during IFWI. The testing temperatures also affected the IFWI characteristics marginally, especially in case of GM-C reinforced PP.

Original languageEnglish
Pages (from-to)996-1012
Number of pages17
JournalJournal of Reinforced Plastics and Composites
Volume20
Issue number12
DOIs
Publication statusPublished - Sep 5 2001

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Keywords

  • Failure
  • Fracture
  • Glass fiber mat
  • Instrumented impact test
  • Polypropylene
  • Temperature dependence

ASJC Scopus subject areas

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

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