Effect of volume fiber and crack length on interlaminar fracture properties of glass fiber reinforced polyester composites (GF/PO composites)

Authors

  • N. Mahmoudi University of Relizane

DOI:

https://doi.org/10.5755/j01.mech.20.2.6934

Keywords:

Mode I (DCB), glass-fiber, fracture

Abstract

Double-cantilever beam (DCB) specimens are widely used to measure the mode I critical-energy release rate GIc of glass-fiber reinforced polyester composites (GF/PO composites). It showed GIc varied significantly during crack propagation. GIc of GF/PO composites are higher than that of the pure polyester (PP) resin because of the additional force required to fracture fiber bridging in GF/PO compos-ites. Comparative DCB tests were carried out to demon-strate the occurrence of fiber bridging. GIc varied markedly and were much dispersed, which would induce little varia-tion when initial crack length was 40 mm. The fracture characteristics were analyzed by scanning electron micro-scope.

DOI: http://dx.doi.org/10.5755/j01.mech.20.2.6934

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Published

2014-04-14

Issue

Vol. 20 No. 2 (2014)

Section

MECHANICS OF SOLID BODIES

License

The copyright for the articles in this journal is retained by the author(s) with the first publication right granted to the journal. The journal is licensed under the Creative Commons Attribution License 4.0 (CC BY 4.0).