Chemistry Reference
In-Depth Information
FIGURE 13.11
The relation between experimental sf
f
and calculated according to the Eq.
(13.16)
s
fracture stress values for PASF film samples [1].
T
Since PASF thin films are deformed in plane stress conditions, then the
value
K
Ic
can be estimated according to the equation [16]:
(
)
2
f
1, 1 2
p
al
+
s
st
.
(13.17)
2
Ic
K
=
(
)
2
1-
n
In Fig. 13.12, the comparison of experimental and calculated according
to the Eq. (13.17) critical stress intensity factor values is shown, which dem-
onstrates the indicated parameters good conformity.
FIGURE 13.12
The relation between experimental
K
Ic
and calculated according to the Eq.
(13.17)
I
K
critical stress intensity factor (stability to crack propagation) values for PASF
film samples [1].
