Page 149 - Engineered Interfaces in Fiber Reinforced Composites

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Table 4.3
Fiber pull-out parameters and interfacial properties for several different fiber compositesa.

Composite system Fiber surface condition Fiber pull-out parameters Interfacial properties 5
P
r,
2
U; (GPa) A(mm-') u (GPa) z,,, (mm) L,,, (mm) Gi, (Jim2) p qo (MPa) 9'
2
Carbon fiber-epoxy matrix Untreated 3.4 1.5 5.4 0.152 0.955 31.1 1.25 - 9.91 2
2
Steel wireeepoxy matrix Uncoated 1.95 0.0142 2.41 7.8 10.9 1316 0.48 - 8.85 5
Release agent coated 0.316 0.0065 2.18 6.5 342 34.7 0.22 - 8.01
Sic fiber-glass matrix Untreated 0.149 0.0304 2.92 0.5 49.3 0.964 0.048 -64.5 0
g
Acid treated 0.235 0.049 3.27 0.6 23.4 2.40 0.078 -12.3 2
%
"After Kim et al. (1992) and Zhou et al. (1993).
%.
%
2