PSI - Issue 19

Available online at www.sciencedirect.com Available online at www.sciencedirect.com

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

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ScienceDirect

Procedia Structural Integrity 19 (2019) 130–139

Fatigue Design 2019 A test reduction strategy for reliability demonstration Fatigue Design 2019 A test reduction strategy for reliability demonstration

Xavier Hermite*, Fabien Lefebvre Cetim, 52 avenue Félix Louat, 60304, Senlis, France Xavier Hermite*, Fabien Lefebvre Cetim, 52 avenue Félix Louat, 60304, Senlis, France

Abstract Abstract

Reliability demonstration always includes experimental approaches, which are expensive in terms of costs and duration. Failure Modes and their effects analysis allows a prioritization of the tests to perform by assessing the criticality of the failure modes. Accelerated testing methods combined with design of experiment and progressive results analysis can highlight the weaknesses of the product. By that way, experimental strategy can be defined to converge to the reliability objectives with the most efficient number of tests. Integrating experience feedback in the test protocol might also improve the test strategy, and Bayesian methodology can also be used to specify the tests needed to demonstrate the reliability target. This paper aims to present a methodology of test reduction, which has been applied on real industrial cases in whole or in part. However, since results cannot be disclosed, no real application will be presented in the paper. Reliability demonstration always includes experimental approaches, which are expensive in terms of costs and duration. Failure Modes and their effects analysis allows a prioritization of the tests to perform by assessing the criticality of the failure modes. Accelerated testing methods combined with design of experiment and progressive results analysis can highlight the weaknesses of the product. By that way, experimental strategy can be defined to converge to the reliability objectives with the most efficient number of tests. Integrating experience feedback in the test protocol might also improve the test strategy, and Bayesian methodology can also be used to specify the tests needed to demonstrate the reliability target. This paper aims to present a methodology of test reduction, which has been applied on real industrial cases in whole or in part. However, since results cannot be disclosed, no real application will be presented in the paper.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. Keywords: reliability; test reduction; test specification; test monitoring; real-time analysis Keywords: reliability; test reduction; test specification; test monitoring; real-time analysis

* Corresponding author. Tel.: +33 340 673 136. E-mail address: Xavier.hermite@cetim.fr * Correspon ing author. Tel.: +33 340 673 136. E-mail address: Xavier.hermite@cetim.fr

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. 10.1016/j.prostr.2019.12.016