Page 277 - Failure Analysis Case Studies II

0. o.8 5*’ py
262

1.0
1.5
0
0.S
3.0
3.5
2.5
20
I
1.0
(1.4 GPa)
~ 200kQ’’
x
z 0.6
3
b
w
5 0.4 -
z / Steels
.a
--- Alum. alloy
0.2
Fig. 8. Notch sensitivity for various materials. (Metal Fatigue, George Sines, editor, 0 1959. Reprinted by permission
of Prof. George Sines.)

Weight Level Distribution

900

800 ....................................
700 ...... .......

600 .......
v)
g 500 ...... .......
.r(
c,
.r(
2 400 ...... .......
sr;
300 ......... .......
200 ...... .......
100 ...... .......

0
30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285
Weight Stack Setting (lb.)
Fig. 9. Machine usage over a three week period.