Optimal test planning for the fatigue-limit model when the fatigue-limit distribution is known
Pascual, F.G.
Dept. of Math., Washington State Univ., Pullman, WA, USA;
This paper appears in: Reliability, IEEE Transactions on
Publication Date: June 2004
Volume: 53,
Issue: 2
On page(s): 284- 292
ISSN: 0018-9529
INSPEC Accession Number: 8061275
Digital Object Identifier: 10.1109/TR.2004.829140
Current Version Published: 2004-06-28
Abstract
This article discusses tools for planning life tests under the random fatigue-limit model, when the form of the fatigue-limit distribution is completely specified. Expressions for the Fisher information matrix elements are provided. Test-plan objectives, such as minimum variance of quantile or parameter estimator, can be written in terms of these expressions. Under Type I censoring, all experimental conditions can be described by a standardized slope parameter & a standardized log(censoring time). This article provides equivalence theorems, which can be used to check the optimality of test plans which often have two levels. The best three-level standard test plans are not optimal, but, in general, involve fewer extrapolations to low stresses than the optimal plans. Test plans for a titanium-alloy fatigue test are presented to illustrate the methods.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
