Biomedical Engineering Reference
In-Depth Information
Fig. 4.5
Wear scar observation subjected to 2,000 cycles [
30
]
the three-body wear scar surface at a high load, accompanied with some small
delamination pits. Typical wear profi le measurements showed that the area of the
three-body wear scar was smaller than that of the two-body wear scar at the same
load, as shown in Fig.
4.6
. Variations in the mean value of the wear volume, as a
function of the normal load, under the two wear conditions are shown in Fig.
4.7
.
The volume of three-body wear was observed to be much smaller than that of two-
body wear at the same load. Moreover, paired Tukey's test (
t
-test) analysis revealed
signifi cant differences in the wear loss between the two wear conditions at the same
loads (
P
< 0.001), as shown in Table
4.2
.
Obviously, the most remarkable characteristic of the worn surfaces under two-
body wear conditions was the existence of bulk delamination (Fig.
4.5
). This
