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Snubbing and Bundling Effects on Multiple Crack Spacing of Discontinuous Random Fiber‐Reinforced Brittle Matrix Composites
Author(s) -
Wu HwaiChung,
Li Victor C.
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04457.x
Subject(s) - materials science , composite material , brittleness , composite number , toughness , cracking , fiber , strain hardening exponent , fiber reinforced composite
Multiple cracking due to pseudo strain–hardening of fiber‐reinforced brittle matrix composites contributes significantly to enhanced composite strain capacity as well as toughness. This unique phenomenon is true for both continuous aligned and discontinuous random fiber composites. Theoretical formulation of multiple crack spacing is reviewed in this paper. In particular, a snubbing effect of fiber pullout and a bundling effect of fiber strands on crack spacing are discussed. Taking account of these effects, expressed via the snubbing coefficient, f , and effective bond strength, τ eff , a better spacing prediction has been obtained for a discontinuous random glass‐strand‐reinforced cement composite.