Abstract
In the process of recycling EOL (end of life) products, disassembly is an important stage. Moreover, there are several targets for disassembly: reuse, remanufacturing and material recycling. In order to improve the efficiency of disassembly, only the component which need to be reused or remanufactured need to be disassembled with nondestructive method. The rest components which recycled for material can be disassembled with partial destructive method. Namely, partial destructive disassembly is more practical than total disassembly within recycling process for EOL products. In this paper, the generally used partial destructive disassembly methods are analyzed. And several rules are defined for reconstructing the hybrid graph of EOL product. And then, an extended Floyd algorithm is proposed for searching optimized disassembly sequence. With this algorithm, the material properties of parts, connection properties between parts or components are taking into account. By ranking the cost of several possible disassembly path, the optimal disassembly sequence is obtained for target component. At last, a soybean milk machine is used as a study case to verify the former approach.
Highlights
With the development of modern society, the nonreasonable treatment of EOL products is affecting the natural environment more and more than before
Kyonghun et al present a design for disassembly (DFD) method, the destructive disassembly is considered in the virtual prototype [9]
Song et al study the influence of partial destructive on the disassembly planning, but the method of destructive disassembly is not take into account [10]
Summary
With the development of modern society, the nonreasonable treatment of EOL products is affecting the natural environment more and more than before. Since the recycling of EOL products, most of the parts or components are transformed into raw materials and reused in the manufacturing. For this circumstance, partial destructive method does not have any influences on material reuse. Partial destructive method does not have any influences on material reuse For this purpose, Klaus et al presented that the fasteners can be removed by destructive method in order to improve the efficiency of disassembly [6]. The rest of the components or parts can be separated by partial disassembly method, such as shearing, cutting or riving off. All the rest components can be disposed by shredding and sorting technology By this means, the revenue of recycling of EOL products will be improved.
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