TAILIEUCHUNG - Mechatronics for Safety, Security and Dependability in a New Era - Arai and Arai Part 6

Tham khảo tài liệu 'mechatronics for safety, security and dependability in a new era - arai and arai part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 134 transported to a second process factory for material recycling component reuse or landfill. On the other hand if a product is disassembled and its condition is checked at the user s site or the nearest factory and each component is then transported directly to the second process factory the transportation cost and lead-time will be reduced. Material Component manufacturing assembling Thermal recycling and Landfilling Material flow in existing concentrated disassembly system _ Material flow in ubiquitous disassembly system Figure 1 Differences between material flows of the concentrated and ubiquitous disassembly systems INFORMATION SYSTEM ARCHITECTURE FOR THE UBIQUITOUS DISASSEMBLY SYSTEM Logistics planning to minimize transportation costs and lead-time seems to be solvable with an conventional planning method but it is not so simple. The product recovery process contains many uncertainties such as what when and where products will be returned. What will be returned There are sometimes unknown components in a returned product because users have customized it. A product identification method is required and if possible information about the use conditions of the product should be recorded. When will products be returned We cannot estimate accurately the amount of returned products. However the reuse plan should be decided upon before the product is returned. Sometimes the reuse plan will change after a product is returned. Rapid matching of demand and supply is needed. Where will products be returned We cannot predict where a returned product will appear because the users are distributed worldwide. Even if there is only a small-scale factory near the returned product the recovery process should be started there. To cope with the uncertainties of the product recovery process three functional requirements are arranged for the ubiquitous disassembly system. Each of the following requirements corresponds to the relevant uncertainty condition written above. Sharing .

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