Steel {ssym}

Hardened Steel

Description

This dataset consists of the failure times for hardened steel specimens in a rolling contact fatigue test. Ten independent observations were taken at each of the four values of contact stress. The response is the length of the time until each specimen of the hardened steel failed.

Usage

data(Steel)

Format

A data frame with 40 observations on the following 2 variables.

stress

values of contact stress, in pounds per square inch x 10^{-6}

life

length of the time until the specimen of the hardened steel failed.

References

McCool, J. (1980) Confidence limits for Weibull regression with censored data. Transactions on Reliability, 29: 145-150.