Investigation of static and dynamic fracture toughness of short ceramic fiber reinforced composites

J. S. Szabó, T. Czigány

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Short ceramic fiber reinforced polypropylene composites have been investigated to determine their static and dynamic fracture toughness for different reinforcing tiber contents. The composites were reinforced with fibers produced by a carding technique combined with needle-punching. Static fracture toughness (Kc) was measured on single-edge notched tensile (SEN-T) specimens, while dynamic fracture toughness (Kd) was tested by impact strength Charpy specimens. Specimens in both cases were cut transverse (T) and in longitudinal (L) directions. Test results show that dynamic fracture toughness is larger than the static one. During loading of SEN-T specimens the burst-type acoustic emission (AE) signals were monitored. From AE signals it can be concluded that the main damage form is the pull-out in the T specimens, and debonding in L ones. These results were supported by scanning electron microscopy micrographs taken from fracture surfaces.

Original languageEnglish
Pages (from-to)1191-1204
Number of pages14
JournalJournal of Macromolecular Science - Physics
Volume41 B
Issue number4-6
DOIs
Publication statusPublished - Jul 2002

Fingerprint

Ceramic fibers
Fracture toughness
Composite materials
Acoustic emissions
Punching
Polypropylenes
Debonding
Impact strength
Needles
Scanning electron microscopy
Fibers

Keywords

  • Acoustic emission
  • Charpy test
  • SEM fractographs
  • SEN-T specimen
  • Short ceramic fiber

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Investigation of static and dynamic fracture toughness of short ceramic fiber reinforced composites. / Szabó, J. S.; Czigány, T.

In: Journal of Macromolecular Science - Physics, Vol. 41 B, No. 4-6, 07.2002, p. 1191-1204.

Research output: Contribution to journalArticle

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