A hierarchical and process-oriented framework for disassemblability evaluation in product maintainability design

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.

A new method for motion accuracy allocation of mechanical transmission system based on interval intuitionistic trapezoidal fuzzy number and Meta-action theory

“…In order to accurately evaluate the comprehensive cost of the meta-action unit, the factors of part manufacturing process [28], unit assembly process [24] and unit maintenance process [29,30] are analyzed, respectively.…”

“…The above analysis method realizes the optimal allocation of the accuracy of the mechanical system, but ignores the factor of maintenance cost. The structure of the mechanical system is becoming more and more complex, and the maintenance cost of disassembly, installation and replacement of parts are becoming higher and higher [29,30]. A higher comprehensive cost will be incurred in the operation of the mechanical system if the maintenance cost factor is ignored in the process of accuracy allocation.…”

Multi-granularity feasibility evaluation method of the partial destructive disassembly for an end-of-life product

“…However, there is no systematic study on the feasibility evaluation system of the partial destructive disassembly for EOL products, and the indicator system is incomplete. Some scholars put forward the method of combining the whole and individual in the construction of the normal disassembly feasibility evaluation indicator, such as Zhang et al [19], who constructed a multi-granularity of hierarchy disassemblability evaluation model from product level and design units level based on complex products' hierarchy structure. Zhu et al [20] constructed a two-level evaluation index system from two levels: product and component.…”

MD-MARS: Maintainability Framework Based on Data Flow Prediction Using Multivariate Adaptive Regression Splines Algorithm in Wireless Sensor Network

“…environmental monitoring, prediction of natural disasters, military surveillance, Internet of Things (IoT), flora and fauna [1], [2], [3], [4]. Maintainability is a significant parameter of Quality of Service (QoS) which is mandatory in a real-time environment [5], [6]. It is defined as ''the ability of system under given conditions of use, to be retained in, or restored to, a state in which it can perform a required function, when maintenance is performed under given conditions and using stated procedures and resources'' [7].…”