calcSfpofFromPofInt: Calculate SFPOF results from interval failure probabilities
In crackR: Probabilistic damage tolerance analysis for fatigue cracking of metallic aerospace structures
Description
Usage
Arguments
Details
Value
Author(s)
References
See Also
View source: R/calcSfpofFromPofInt.R
Description
For the flight-by-flight sequential importance sampling routine of the
crackR package, the default is to output SFPOF at the start and end of
a number of subintervals of flights. Also output in the results
object is the probability
of failure of each interval: pof.int. This function calculates
and "average" value of
SFPOF for each flight in each subinterval using pof.int,
yielding SFPOF results in the familiar format for plotting.
Usage
1
calcSfpofFromPofInt(pof.int)
Arguments
pof.int
data.frame of the subintervals of a crackR run with columns
indicating the number of flights in each interval and the failure
probability of each interval. pof.int is standard output in a crackR run.
Details
Like the
interval version of the routine, SFPOF will converge more quickly for
many problems when averaging estimates over a number of flights. Using
this function to process flight-by-flight results will be approximate
within each subinterval,
but these will be less approximate in general than those obtained by
the interval routine.
Value
data.frame of SFPOF results for printing or plotting
Author(s)
Keith Halbert <keith.a.halbert@gmail.com>
References
Halbert, K. "Estimation of Probability of Failure for Damage-Tolerant
Aerospace Structures" PhD Thesis, Temple University Department of
Statistics, Philadelphia, PA, Apr 2014
See Also
crackR documentation built on May 29, 2017, 8:45 p.m.
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Description Usage Arguments Details Value Author(s) References See Also
View source: R/calcSfpofFromPofInt.R
Description
For the flight-by-flight sequential importance sampling routine of the
crackR package, the default is to output SFPOF at the start and end of
a number of subintervals of flights. Also output in the results
object is the probability
of failure of each interval: pof.int. This function calculates
and "average" value of
SFPOF for each flight in each subinterval using pof.int,
yielding SFPOF results in the familiar format for plotting.
Usage
1 | calcSfpofFromPofInt(pof.int)
|
Arguments
pof.int |
data.frame of the subintervals of a crackR run with columns indicating the number of flights in each interval and the failure probability of each interval. pof.int is standard output in a crackR run. |
Details
Like the interval version of the routine, SFPOF will converge more quickly for many problems when averaging estimates over a number of flights. Using this function to process flight-by-flight results will be approximate within each subinterval, but these will be less approximate in general than those obtained by the interval routine.
Value
data.frame of SFPOF results for printing or plotting
Author(s)
Keith Halbert <keith.a.halbert@gmail.com>
References
Halbert, K. "Estimation of Probability of Failure for Damage-Tolerant Aerospace Structures" PhD Thesis, Temple University Department of Statistics, Philadelphia, PA, Apr 2014
See Also
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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