Page 190 - Biaxial Multiaxial Fatigue and Fracture

1 74 I! BONACUSE AND S. KALLURI

- Baseline 1
- Baseline 2
1000

L
(d
a,
c
0
01
1 00 10’ 102 103 104
Number of Cycles, n2

(c) axialltorsion

1800

s 1500

ai
0)
5 1200
U - Baseline.1
v) - Baseline 2
v)
E -f- nlT= 5857
tj 900 ...o nlT= 11714
nlT = 23427
T.. ,,=35141

1 00 10’ 1 02 103 104
Number of Cycles, n2
(d) torsiodaxial

Fig. 2. Second load level cyclic stress response with baseline data for: (a) axial/axial, (b)
torsiodtorsion, (c) axialkorsion, and (d) torsiodaxial cumulative fatigue experiments