A Partial Safety Factor Method for System Reliability Prediction With Outsourced Components
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems Part B: Mechanical Engineering
Volume 5, Issue 2
Abstract
System reliability is usually predicted with the assumption that all component states are independent. This assumption may not accurate for systems with outsourced components since their states are strongly dependent and component details may be unknown. The purpose of this study is to develop an accurate system reliability method that can produce complete joint probability density function (PDF) of all the component states, thereby leading to accurate system reliability predictions. The proposed method works for systems whose failures are caused by excessive loading. In addition to the component reliability, system designers also ask for partial safety factors for shared loadings from component suppliers. The information is then sufficient for building a system-level joint PDF. Algorithms are designed for a component supplier to generate partial safety factors. The method enables accurate system reliability predictions without requiring proprietary information from component suppliers. This article is available in the ASME Digital Collection at https://doi.org/10.1115/1.4042973.
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Copyright © 2019 by ASME.
History
Received: Jul 13, 2018
Revision received: Feb 24, 2019
Published online: Apr 15, 2019
Published in print: Jun 1, 2019
Authors
Funding Information
Directorate for Engineering10.13039/100000084: CMMI 1562593
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