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The local bond strength and its determination by fragmentation and pull-out tests

Authors
Journal
Composites Science and Technology
0266-3538
Publisher
Elsevier
Publication Date
Volume
57
Issue
8
Identifiers
DOI: 10.1016/s0266-3538(97)00037-7
Keywords
  • Failure Modes
  • Fragmentation Test
  • Load Transfer Models
  • Local Bond Strength
  • Pull-Out Test

Abstract

Abstract Several theoretical models have been analysed to determine the local (ultimate) adhesive bond strength for a thin-fibre/thermoplastic-matrix system, proceeding from experimental data obtained by the fragmentation and pull-out techniques. For the pull-out test, an extrapolation model is proposed that takes into account the stress in a matrix resulting from both external load and thermal shrinkage. For the fragmentation technique, the local adhesive strength was calculated from the results of continuously monitored single-fibre composite tests. Both approaches gave close ultimate bond strength values for carbon-fibre/epoxy-matrix systems.

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