Page 173 - Engineered Interfaces in Fiber Reinforced Composites
P. 173
Chapter 4. Micromechanics of stress transfer 155
0.5
.;a 0.4
a
s2 0.3
n
bu 0.2
0.1
L=Gmm
n I I I 1 ,
0.6 c ,. _--.
L=5.mm
,.
,
systems. zmax is only marginally greater for fiber pull-out than fiber push-out, the
difference being almost negligible for the latter composite, which is typical of
frictional bonding at the interface. Considering the observation that zmax is
determined mainly by the material properties such as q,/qr and E,/'Ef, this result
confirms that the differences in the debond stresses between the two loading
geometry arise mainly from the Poisson effects at the debonded interface, which are
distinct in each loading.
