ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 5

Failure Probability Analysis of Proof Loaded Components

Margetson, J
Research Scientist, Head of Stress Analysis Section, and Research Scientist, Ministry of Defence, Royal Armaments Research and Development Establishment, Westcott, Aylesbury, Bucks,

Cooper, NR
Research Scientist, Head of Stress Analysis Section, and Research Scientist, Ministry of Defence, Royal Armaments Research and Development Establishment, Westcott, Aylesbury, Bucks,

(Received 21 October 1986; accepted 10 June 1987)

Abstract

An extension to the traditional engineering proof test has been used as a means of estimating the statistical distribution of component strength. The maximum likelihood analysis of censored samples has been applied to data obtained from components which fail the application of a proof load, in order to predict the distribution of those which survive. Extra data (for example, from component trials) can be included in this analysis to improve the estimates of the distribution parameters.

Keywords:
proof testing, failure prediction, failure probability, Weibull statistics, maximum likelihood method, least squares analysis

Paper ID: JTE11158J
DOI: 10.1520/JTE11158J
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