End-of-life product disassembly with priority-based extraction of dangerous parts
| Autor: | Gino Dini, Beatrice Lazzerini, Michela Dalle Mura, Francesco Pistolesi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Risk
0209 industrial biotechnology Combinatorial optimization Workstation Computer science Selective disassembly Metaheuristic 02 engineering and technology Evolutionary computation Reuse Electronic waste Disassembly line balancing Industrial and Manufacturing Engineering Profit (economics) law.invention 020901 industrial engineering & automation Artificial Intelligence law 0202 electrical engineering electronic engineering information engineering Electronics Genetic algorithm Multi-objective optimization Product reuse and recycling Safety Sustainability Risk analysis (engineering) Line balancing 020201 artificial intelligence & image processing Software |
| Popis: | The amount of electronic waste generated in the world is impressive. The USA alone yearly throw away 9.4 million tons of electronic devices: only 12.5% is recycled. One way to reduce this massive impact on the environment is to disassemble these devices with the aim of reusing and recycling as many parts as possible. Disassembling end-of-life products is a complex industrial process that may pose workers at risk because some parts of the product may contain dangerous materials. It is thus crucial to design efficient, sustainable and secure disassembly lines. This paper presents a multi-objective formulation of the Disassembly Line Balancing Problem (DLBP) which promotes efficiency and includes a new objective that increases the level of safety. The efficiency is guaranteed by balancing the idle times of the workstations, and by maximizing the profit and the level of feasibility of a disassembly sequence, which means disassembling the product as much as possible. Safety is maximized by extracting each dangerous part with a priority that is higher the more dangerous the part is. The most dangerous parts can thus be quickly removed from the product, thereby eliminating the exposure to the greatest risks. The disassembly continues with the execution of the tasks that remove the parts that are gradually less dangerous. Along with the DLBP formulation, this paper presents a genetic algorithm purposely designed to solve the problem. Two real-world case studies are discussed which entail the disassembly of a TV monitor and an air conditioner. |
| Databáze: | OpenAIRE |
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