12 01 2024 1

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1 Exam – January 12th, 2024 - A.Y. 2023-2024 Advanced Manufacturing Processes B (5 cfu) - Prof. Matteo Strano Theoretical and simple numerical questions Q1: Consider the attached image. Among the listed dimensions, an important variable is missing: the environmental burden of a given manufacturing solution. Why? (Select the answers that you consider correct - 2 Points) because sustainability is totally independent on flexibility (versatility) and time (productivity) and it is therefore difficult to embed in this figure o this is wrong, nothing is TOTALLY independent because the schematic is simply incomplete: sustainability can be added as a fifth dimension because the quality of a given process/product can also be measured as "green quality" and therefore sustainability is totally represented by and hidden behind the letter Q o this is partly wrong, TOTALLY hidden is not true because the cost of a given process/product can incorporate "environmental costs" and therefore sustainability is partly represented by the symbol € because this figure refers to a complete manufacturing solution (product/process/system) while sustainability is a variable only related to the product. o wrong Q2: Pure waterjets (WJ) and abrasive waterjets (AWJ) obviously have different applications. The systems are also different, because in pure WJ we don't need the abrasive suction and mixing devices. Other differences are listed below. (Select the statements that you consider WRONG - 1.5 Points) in pure WJ applications the installed power at the intensifier pump is lower than in AWJ because we typically deal with low strength materials in pure WJ applications the nozzle diameter is typically smaller than in AWJ because we need a very well focused jet to obtain a sharp cut o this is the only…