bleed: Bleed System Reliability Test

In Auburngrads/SMRD.data: Statistical Methods For Reliability Data - Datasets

Description

Abernethy, Breneman, Medlin, and Reinman give failure and running time for 2256 bleed systems operating at several geographically separated bases. They observed a change in the probability plot before and after 600 of operation. Further examination showed that 9 of the 19 failures occurred at Base 'D'. Separate analyses of the Base D data and the data from the other bases indicated different life distributions. The large slope for Base D indicated strong wearout behavior. The relatively small slope for the other bases suggested infant mortality or accidental failures. After investigation it was determined that the early-failure problem at base D was caused by salt air (Base D was near the ocean). A change in maintenance procedures there solved the dominant bleed system reliability problem.

Format

A data.frame with 60 rows and 4 variables:

[, 1]	hours	Accumulated time at event	Numeric
[, 2]	event	Event observed at hours (failure/right-censored/left-censored/interval-censored)	Categoric
[, 3]	count	Number of events observed at hours	Numeric
[, 4]	base	Base where observation was made	Categoric

Source

Abernethy, R. B., Breneman, J. E., Medlin, C. H., and Reinman, G. L., (1983), Weibull Analysis Handbook, Air Force Wright Aeronautical Laboratories Technical Report AFWAL-TR-83-2079.

See Also

Other data-done: alloya, at7987, bearingcage, berkson20, ceramicbearing, cirpack6, comptime, computerlab, cylinder, devicea, deviceb, devicec, deviceg, fan, gaaslaser, grampus, grids1, halfbeak, heatexchanger, lfp1370, lfptrun100, lzbearing, metalwear, mylarsub, nicdbattery, piccioto, printedcircuitboard, resistor2, resistor, superalloy, tantalum, turbine, v7tube, valveseat, zelencap

Auburngrads/SMRD.data documentation built on May 13, 2019, 10:02 a.m.