repairtimes {ig}R Documentation

Data set

Description

Several data sets related to the IGTD are available in the ig package, which have been taken from the literature of this topic.

Usage

data(repairtimes)

Format

A vector containing 46 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.

Other data set names are: repairtimes, shelflife, fracture, precipitations and runoff Chhikara and Folks (1989), which correspond to maintenance data on active repair times (in hours) for an airborne communications transceiver, shelflife (in days) of a food product, fracture toughnesses of MIG welds and precipitation (in inches) and runoff amounts at Jug Bridge, Maryland, respectively.

References

Chhikara, R. S. and Folks, J. L. (1989) The Inverse Gaussian Distribution. Marcel Dekker, New York.


[Package ig version 1.0 Index]