valveseat: Diesel Engine Valve Seat Replacements

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

Description

Nelson and Doganaksoy report the age when a valve seat replacement occurred across a fleet of 41 diesel engines. For each engine, the number of days when a replacement event occured were recorded along with the number of days when the observational period ended. The data were recorded to answer the following questions:

• Does the replacement rate increased with age?

• How many replacement valves will be needed in some future period of time?

• Can valve life in these systems be modeled as a superimposed renewal process?

Format

A data.frame with 89 rows and 3 variables:

[, 1]	engine	Designator code specifying each engine under test	Categoric
[, 2]	days	Accumulated time at event	Numeric
[, 3]	event	Event observed at days (replacement/end)	Categoric

Source

Nelson, W. and Doganaksoy, N. (1989), A computer program for an estimate and confidence limits for the mean cumulative function for cost or number of repairs of repairable products, TIS report 89CRD239, General Electric Company Research and Development, Schenectady, NY.

Nelson, W. (1995), Confidence limits for recurrence data - applied to cost or number of product repairs, Technometrics, 37, 147-157.

See Also

Other data-done: alloya, at7987, bearingcage, berkson20, bleed, 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, zelencap

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