23 01 17s

Pagina 1

<Labs: Disassembly strategies> Your task is to design a preliminary layout of disassembly line, in order to recover the maximum value from the EoL products/components. When the disassembly of parts/components is economically unsustainable, the part/component should be sent to the recycling treatment. The digital door lock layout is represented in Figure 1.1. The following data are known: • Scheme of the digital door lock. • Bill of Materials (BOM), including information about task time, End of life value and recycling cost for each component. Simulation: Digital door lock <Labs: Disassembly strategies> Comp ID Component Task time (tu) EOL value (euro/comp) Recycling treat. Cost (euro/comp) 1 Outside plate 0,5 0,35 0,05 2 Inside plate 0,5 0,35 0,03 3 Outside door handle 0,75 1,15 0,1 4 Inside door handle 0,75 1,15 0,15 5 Keypad 0,2 0,25 3,7 6 Mortise 1,2 0,35 3,3 7 Mortise plate 0,1 0,05 0,015 8 Cover 0,2 0,25 1,2 9 Battery 1,1 2 2,7 10 Metal plate 1 0,35 0,35 11 Door 5 4,5 0,1 12 Cable 1,2 0,2 1,8 Bill Of Materials Exploded view Simulation: Digital door lock <Labs: Disassembly strategies> ITEM A. Define a feasible disassembly precedence graph (component-oriented) by analysing the exploded view. ITEM B. Based on the product structure diagram, formulate the problem of finding the best disassembly sequence to maximize the profit, taking into consideration all the given information: set-up time, fixed and recycling treatment costs defined. Consider also that each time unit is 30 seconds long, the cost is 0.5 Euro/tu and the disassembly of hazardous components has an additional cost of 0.55 Euro/component for safety reasons. Calculate the obtained revenue. Additional information: •The time to rotate the part of 180° is 0.7 tu, in all direction (x, y and z). •The time to…