A hierarchical and process-oriented framework for disassemblability evaluation in product maintainability design
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ORIGINAL ARTICLE
A hierarchical and process-oriented framework for disassemblability evaluation in product maintainability design Wenmin Zhu1 · Xiumin Fan1 · Qichang He1 Received: 5 March 2020 / Accepted: 23 July 2020 / Published online: 16 August 2020 © Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract Disassemblability evaluation is an important part of product maintainability design. Currently, the disassemblability evaluation of complex products is not systematic and complete. The main problems include (1) the existing methods are limited to individual components, ignoring the evaluation of the whole product; and (2) most studies focus on the single disassembly operations rather than a complete process. To address these problems, this paper proposes a hierarchical and process-oriented evaluation framework. Firstly, from the levels of component and product, a two-level evaluation index system is constructed, and the selected evaluation indexes reflect the features of both current operation and previous disassembly process. Secondly, based on Look-up Table, virtual maintenance, and simple algebraic operations, the evaluation indexes are quantified successively. Thirdly, a hierarchical evaluation procedure is presented, which includes two levels and four types of evaluations. Based on the synthetic application of different types of evaluations, the disassemblability of a product can be fully evaluated and understood. Finally, the effectiveness of the proposed framework is verified by a case study of an electronic cabin. Keywords Product maintainability design · Disassemblability evaluation · Virtual maintenance · Evaluation procedure
1 Introduction 1.1 Background With the improvement of manufacturing technology and fast change of customer demands, global manufacturing companies are actively exploring the countermeasures and expect to gain more competitive advantages in the market. Therefore, product competition factors such as performance, price, and after-sales service, etc., have become the focus of attention. Maintainability, as an inherent Xiumin Fan
[email protected] Wenmin Zhu [email protected] Qichang He [email protected] 1
Institute of Intelligent Manufacturing and Information Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai City, People’s Republic of China
characteristic of product, is the important foundation of evaluating product competition factors [1–3]. From the mathematical point of view, the maintainability can be defined as the probability that a failed product can be restored to the normal state within a given period of time [4]. High maintainability means the product can be recovered readily, while poor maintainability increases maintenance costs and reduces the utilization rate of a product. Moreover, the structure and composition of mechanical products have become bigger and more complex in recent years. It is increasingly hard to ensure the durable and stable operation of products under comple
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