Optimum maintenance units in multi‐indenture systems

IF 2.2 3区工程技术 Q3 ENGINEERING, INDUSTRIAL

Quality and Reliability Engineering International Pub Date : 2024-04-09 DOI:10.1002/qre.3549

Qian Qian Zhao, Jae Yoon Yoo, Tadashi Dohi, Won Young Yun

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Abstract

This paper deals with an optimization problem of determining the maintenance units and age‐based inspection schemes to minimize the expected maintenance cost rate and satisfy a target system availability for multi‐indenture systems that have a modular structure with redundant units. Failures of primary components directly lead to system failures and can therefore be identified and maintained immediately, while failures of redundant components need to be identified by inspections. And the designated maintenance units need to be replaced during maintenance. By constructing the dual structure of the fault tree, we present a failure path enumeration method, based on which the system availability and expected maintenance cost rate models considering maintenance time are derived. For redundant units, two types of inspection policies are considered in our models: one is the corrective maintenance (CM)‐based inspection policy, and the other one is the age‐based inspection (PM) policy, inspections are performed at failures or age h, depending on which occurred earlier. A heuristic algorithm is proposed to find the reasonable maintenance units and inspection intervals simultaneously, and its performance is also compared and analyzed. Several numerical examples are studied to investigate the effect of parameters on optimal solutions.

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多诱饵系统中的最佳维护单元

本文讨论的是一个优化问题，即如何确定维护单元和基于年龄的检查方案，以最大限度地降低预期维护成本率，并满足具有冗余单元模块结构的多诱饵系统的目标系统可用性。主要组件的故障会直接导致系统故障，因此可以立即识别和维护，而冗余组件的故障则需要通过检查来识别。而指定的维护单元则需要在维护过程中进行更换。通过构建故障树的二元结构，我们提出了一种故障路径枚举法，并在此基础上推导出考虑维护时间的系统可用性和预期维护成本率模型。对于冗余单元，我们的模型考虑了两种检查策略：一种是基于纠正性维护（CM）的检查策略，另一种是基于年龄的检查（PM）策略，在故障或年龄 h 时进行检查，具体取决于哪个发生得更早。本文提出了一种启发式算法来同时找到合理的维护单位和检查间隔，并对其性能进行了比较和分析。研究了几个数值示例，以探讨参数对最优解的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Quality and Reliability Engineering International 管理科学-工程：工业

CiteScore

4.90

自引率

21.70%

发文量

181

审稿时长

6 months

期刊介绍： Quality and Reliability Engineering International is a journal devoted to practical engineering aspects of quality and reliability. A refereed technical journal published eight times per year, it covers the development and practical application of existing theoretical methods, research and industrial practices. Articles in the journal will be concerned with case studies, tutorial-type reviews and also with applications of new or well-known theory to the solution of actual quality and reliability problems in engineering. Papers describing the use of mathematical and statistical tools to solve real life industrial problems are encouraged, provided that the emphasis is placed on practical applications and demonstrated case studies. The scope of the journal is intended to include components, physics of failure, equipment and systems from the fields of electronic, electrical, mechanical and systems engineering. The areas of communications, aerospace, automotive, railways, shipboard equipment, control engineering and consumer products are all covered by the journal. Quality and reliability of hardware as well as software are covered. Papers on software engineering and its impact on product quality and reliability are encouraged. The journal will also cover the management of quality and reliability in the engineering industry. Special issues on a variety of key topics are published every year and contribute to the enhancement of Quality and Reliability Engineering International as a major reference in its field.

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