psi31: Lifetimes of aluminum specimens exposed to a maximum stress...

In santosneto/RBS: Regression models for Birnbaum-Saunders distributions

Description

Several data sets related to the BS distribution are available in the RBS package, which have been taken from the literature on this topic.

Usage

data(psi31)

Format

A vector containing 101 observations.

Details

psi21, psi26 and psi31 were taken from Birnbaum and Saunders (1969), who reported fatigue life data correspond to the cycles (\times 10^{-3}) of aluminum specimens of type 6061-T6. These specimens were cut in a parallel angle to the direction of rotation and oscillating at 18 cycles per seconds. They were exposed to a pressure with maximum stress of 21,000, 26,000, and 31,000 psi (pounds per square inch), for n = 101, 102, and 101 specimens, respectively.

References

Birnbaum, Z. W. and Saunders, S. C. (1969). Estimation for a family of life distributions with applications to fatigue. J. Appl. Probab. 6(2): 328-347.

Examples

## Load data sets
data(psi31)
## Histogram for psi31
hist(psi31)

santosneto/RBS documentation built on Feb. 5, 2021, 2:12 p.m.