Reliability fix effectiveness factor estimation

Author

Gibson, Gregory J. ; Crow, Larry H.

Author_Institution

Anal. Sci. Corp., Reading, MA, USA

fYear

1989

fDate

24-26 Jan 1989

Firstpage

171

Lastpage

177

Abstract

A practical, statistically sound methodology is developed for estimating the average fix-effectiveness factor for corrective actions implemented during a reliability growth test phase. A fix-effectiveness factor is defined to be the percent decrease in a problem failure mode due to a corrective action. The approach utilizes the reliability growth projection model developed by L.H. Crow (1974). This model projects the reliability at the beginning of phase II of development testing based on failure data from phase I of development testing and assumes subjective fix-effectiveness factors. The authors reversed this process to estimate an average fix-effectiveness factor using the model and failure data from phase I and phase II. This approach is based on a number of assumptions which are developed and discussed in detail. Examples illustrating the practical application of the procedure are given

Keywords

failure analysis; military systems; reliability; reliability theory; average fix-effectiveness factor; corrective actions; problem failure mode; reliability growth test phase; Acoustic testing; Databases; Delay effects; Delay estimation; Failure analysis; Phase estimation; Reliability engineering; Safety; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Reliability and Maintainability Symposium, 1989. Proceedings., Annual

Conference_Location

Atlanta, GA

Type

conf

DOI

10.1109/ARMS.1989.49595

Filename

49595