valveseat: Diesel engine valve seat data
In Auburngrads/SMRD: Statistical Methods For Reliability Data
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:
1Does the replacement rate increased with age?
2How many replacement valves will be needed in some future period of time?
3Can 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.
Auburngrads/SMRD documentation built on Sept. 14, 2020, 2:21 a.m.
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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:
1Does the replacement rate increased with age? 2How many replacement valves will be needed in some future period of time? 3Can 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.
R Package Documentation
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We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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