Load sharing in series configuration. (5th December 2017)

• Record Type: Journal Article
• Authors: Krivtsov, Vasiliy; Amari, Suprasad; Gurevich, Vladimir
• Is Part Of: Quality and reliability engineering international. Volume 34:Number 1(2018)
• Page Start: 15
• Page End: 26
• Publication Date: 2017-12-05
• Subjects: load‐sharing systems -- reliability optimization -- system reliability; Reliability (Engineering) -- Periodicals; Quality control -- Periodicals; High technology -- Periodicals; 620.00452
• DOI: 10.1002/qre.2230
• Languages: English
• ISSNs: 0748-8017

Abstract

Abstract: In reliability engineering, load sharing is typically associated with a system in parallel configuration. Examples include bridge support structures, electric power supply systems, and multiprocessor computing systems. We consider a reliability maximization problem for a high‐voltage commutation device, wherein the total voltage across the device is shared by the components in series configuration. Here, the increase of the number of load‐sharing components increases component–level reliability (as the voltage load per component reduces) but may decrease system–level reliability (because of the increased number of components in series). We provide the solution for the 2 popular life‐load models: the proportional hazard and the accelerated failure time models with the underlying exponential and Weibull distributions for both a single and dual failure modes.