A case study in nonconformance and performance trend analysis

Author

Maloy, Joseph E. ; Newton, Coy P.

Author_Institution

NASA, Johnson Space Center, Houston, TX, USA

fYear

1990

fDate

23-25 Jan 1990

Firstpage

517

Lastpage

521

Abstract

As part of NASA´s effort to develop an agency-wide approach to trend analysis, a pilot nonconformance and performance trending analysis study was conducted on the Space Shuttle auxiliary power unit (APU). The purpose of the study was to (1) demonstrate that nonconformance analysis can be used to identify repeating failures of specific item (and the associated failure modes and causes) and (2) determine whether performance parameters could be analyzed and monitored to provide an indication of component or system degradation prior to failure. The nonconformance analysis of the APU did identify repeating component failures, which possibly could be reduced if key performance parameters were monitored and analyzed. The performance-trending analysis verified that the characteristics of hardware parameters can be effective in detecting degradation of hardware performance prior to failure

Keywords

reliability; space vehicle power plants; APU; NASA; Space Shuttle auxiliary power unit; failure causes; failure modes; hardware performance degradation detection; nonconformance analysis; performance trend analysis; reliability; Accidents; Computer aided software engineering; Condition monitoring; Databases; Degradation; Failure analysis; Hardware; Performance analysis; Space shuttles; Transportation;

fLanguage

English

Publisher

ieee

Conference_Titel

Reliability and Maintainability Symposium, 1990. Proceedings., Annual

Conference_Location

Los Angeles, CA

Type

conf

DOI

10.1109/ARMS.1990.68012

Filename

68012