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Research Papers: Design for Manufacture and the Life Cycle

A Method for Improving the Process and Cost of Nondestructive Disassembly

[+] Author and Article Information
Ile Mircheski

Faculty of Mechanical Engineering,
University Ss. Cyril and Methodius,
Skopje 1000, Republic of Macedonia
e-mail: ile.mircheski@mf.edu.mk

Remon Pop-Iliev

Mem. ASME
Faculty of Engineering and Applied Science,
UOIT-University of Ontario Institute
of Technology,
Oshawa, ON L1H 7K4, Canada
e-mail: remon.pop-iliev@uoit.ca

Tatjana Kandikjan

Mem. ASME
Faculty of Mechanical Engineering,
University Ss. Cyril and Methodius,
Skopje 1000, Republic of Macedonia
e-mail: tatjana.kandikjan@mf.edu.mk

1Corresponding author.

Contributed by the Design for Manufacturing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received January 22, 2016; final manuscript received July 29, 2016; published online September 14, 2016. Assoc. Editor: Rikard Söderberg.

J. Mech. Des 138(12), 121701 (Sep 14, 2016) (15 pages) Paper No: MD-16-1065; doi: 10.1115/1.4034469 History: Received January 22, 2016; Revised July 29, 2016

The ever-increasing global environmental concerns demand that strong emphasis be given to the decision-making process pertaining to the strategy of design for nondestructive disassembly during the product evaluation stage. The ultimate objective is to considerably increase the percentage of product components and materials suitable for recycling, recovery, and/or reuse. In this context, this paper proposes a method for improving the nondestructive disassembly of a final product. This method analyzes the nondestructive disassembly by determining a disassembly interference matrix, feasible disassembly sequences, and improved nondestructive disassembly sequences. The innovative element of the nondestructive disassembly method proposed in this paper is integrating the generated conceptual design solutions for a given technical device with a software package developed for determining its improved disassembly sequence embedded within a 3D CAD platform. The developed procedure is based on information obtained from a 3D CAD model of a product, such as geometric constraints, automatic identification of fasteners and components, determination of component-to-component and component-to-fastener connection graphs, and AND/OR logic operations. The goal is for product designers to predict, evaluate, and define improved disassembly sequences while minimizing the cost of disassembly operations as early in the design stage as possible after a CAD model of the product becomes available. The applicability of the integrated method for determining the improved disassembly sequence is presented through an illustrative example.

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Figures

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Fig. 1

Flowchart of the proposed I-DIS method

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Fig. 2

Exploded view and cross-sectional view of the example pump subassembly

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Fig. 3

The contact matrix and diagrams for (a) contacts between components and (b) contacts between components and fasteners in the sample product subassembly

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Fig. 5

Transition matrix for the presented example

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Fig. 4

List of disassembly operations

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Fig. 6

List of all feasible disassembly sequences

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Fig. 7

A sample screenshot of the 3D CAD integration performed by the I-DIS method using a VBA macro in solid works to determine the lists of components and fasteners (including their respective materials and weights), contact pairs, and the resulting disassembly interference matrix

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Fig. 8

The I-DIS software tool interface when determining the improved disassembly sequences for (a) recycling and (b) product maintenance

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