List of Symbols
xi
Y
X 2
N~ At
2 - 2oKF
)~m
0
Ge
Gmax + O’rnin
~rm
2
Grn
O’max -- Groin
O’r
2
A scaling factor for Weibull plotting
Is the Gaussian standard deviation for an infinite
sample size
Standard deviation for a function ~ (x, y, z .... )
One sided tolerance limit
Is a Weibull shape parameter for infinite sample
size
Chi-Square Distribution
A scaling factor for Gaussian plotting
A test sample Weibull 3 from a plot or computer
Is a Weibull scale parameter for infinite sample
size
Strain low cycle fatigue
Is a Weibull locations parameter less than the
lowest value of the infinite data
Failure rate (failures per hour)
(Appendix D)
Generic fail-rate distributions
Lagrangian multiplier
Is the Gaussian mean for an infinite sample size
Another form of the Weibull 3
A test sample Weibull ® from a plot or computer
Corrected specimen endurance
Mean stress
ffxm -- ffxmffY m + ff~m+ 3rxym2
Reversal or amplitude stress
V/ff2xr- Gxray r + ~7~r + 3"C2xyr
Yield strength
Mean, standard deviation for a variable