Page 519 - Marine Structural Design

Chapter 27 Fatigue Reliability 495

I I I
,
,
I

---___
1 .o , -_ I I 0.0
0.7 0.8 0.9 1 .o 1.1
Weibull shape parameter B
Figure 27.4 Effect of Shape Parameter B on p and PF of A Component
(Song and Moan, 1998)

6.0

--&- l/B-N(1.053,0.1), cc(l/B,lnA)=-0.8
5.0 +Fixed: B=0.96
m
h + 1lB-N (1.053,O.l)
CI & B=0.95 randomized by Xb-(l.0,O.l)
a,
s
x 4.0
a,
-0
c
.-
>
s 3.0
c)
n
.- -
m
2
2.0
1 .o
0 4 8 12 16 20
Service time (Year)

Figure 27.5 Effect of Different Models of Shape Parameter B on p of A
Component (cc denotes correlation coefficient) (Song and
Moan, 1998)