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Small sample theory for reliability design

Small sample theory for reliability design
Small sample theory for reliability design
This paper outlines a new technique to address the paucity of data in assessing fatigue strength reliability. New formulations are presented for scatter factors, dealing with conditions where the population standard deviation is unavailable and where fatigue test results are incomplete. Reduction factor formulae for these two cases are also given. Finally, the concepts are applied to two sets of experimental data, demonstrating the practical and economic use of the proposed technique. It is shown from these examples that, when the standard deviation of the population is unknown, then safe fatigue life and fatigue strength can be obtained realistically according to the small sample test data using the new formulae for the fatigue life scatter factors and for the fatigue strength reduction factor.
0309-3247
87-92
Xiong, J.
eb862b45-ef55-4fa7-901d-787c342d809f
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Gao, Z.T.
943ffb67-48a8-40f7-80ca-9c2050fa89d9
Xiong, J.
eb862b45-ef55-4fa7-901d-787c342d809f
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Gao, Z.T.
943ffb67-48a8-40f7-80ca-9c2050fa89d9

Xiong, J., Shenoi, R.A. and Gao, Z.T. (2002) Small sample theory for reliability design. The Journal of Strain Analysis for Engineering Design, 37 (1), 87-92. (doi:10.1243/0309324021514853).

Record type: Article

Abstract

This paper outlines a new technique to address the paucity of data in assessing fatigue strength reliability. New formulations are presented for scatter factors, dealing with conditions where the population standard deviation is unavailable and where fatigue test results are incomplete. Reduction factor formulae for these two cases are also given. Finally, the concepts are applied to two sets of experimental data, demonstrating the practical and economic use of the proposed technique. It is shown from these examples that, when the standard deviation of the population is unknown, then safe fatigue life and fatigue strength can be obtained realistically according to the small sample test data using the new formulae for the fatigue life scatter factors and for the fatigue strength reduction factor.

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More information

Published date: 2002

Identifiers

Local EPrints ID: 21968
URI: http://eprints.soton.ac.uk/id/eprint/21968
ISSN: 0309-3247
PURE UUID: fc518bb9-791c-42aa-a508-920cd1217a6e

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Date deposited: 16 Mar 2006
Last modified: 15 Mar 2024 06:33

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Contributors

Author: J. Xiong
Author: R.A. Shenoi
Author: Z.T. Gao

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