Full exam for Advanced Manufacturing Processes in the Mechanical Engineering degree programme at Politecnico di Milano. The document covers: ADVANCED MANUFACTURING PROCESSES B Prof. Caprio SURNAME NAME PERSONAL ID Exam – 13th January 2024 Question n. 1 (1.5 points) Which of the following does NOT affect the productivity of a laser stripping process o Beam waist diameter o Process efficiency o Laser emission power o
Full exam for Advanced Manufacturing Processes in the Mechanical Engineering degree programme at Politecnico di Milano. The document covers: ADVANCED MANUFACTURING PROCESSES B Prof. Caprio SURNAME NAME PERSONAL ID Exam – 13th January 2024 Question n. 1 (1.5 points) Which of the following does NOT affect the productivity of a laser stripping process o Beam waist diameter o Process efficiency o Laser emission power o
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ADVANCED MANUFACTURING PROCESSES B Prof. Caprio SURNAME NAME PERSONAL ID Exam – 13th January 2024 Question n. 1 (1.5 points) Which of the following does NOT affect the productivity of a laser stripping process o Beam waist diameter o Process efficiency o Laser emission power o Scan speed o Hatch distance o None of these parameters Question n. 2 (1.5 points) Which of the following statements is FALSE regarding the keyhole welding process? o Keyhole welding is always preferrable to conduction mode welding o Keyhole welding allows to achieve higher penetration welds in comparison to arc based welding processes o Plasma formation may hinder the keyhole stability during the welding process o Processing of a surface from an inclined angle may impede keyhole formation o None of these options Question n. 3 (1.5 points) With regards to the laser cutting process, which of the following statements is TRUE: o Very high levels of emission power (P>30 kW) always correspond to an increase in productivity o Spatial beam shaping cannot be employed due to limitations in the optical chain o Pulsed wave emission is often preferred for the processing of high thickness materials o The technology cannot be employed for the processing of non-metallic materials o 3 axis gantry systems are the preferred solution for the processing of metallic sheet Question n. 4 (1.5 points) Under the hypothesis that in laser surface structuring operations the productivity is proportional to th e average emission power , which of the following solutions is of greater interest in terms of process throughput? o Flash pumped Nd:YAG laser source with pulse duration of 10 ms, peak emission power of 800 W and emission frequency of 25 Hz o ns-pulsed fiber laser with pulsation frequency of 100 kHz and single pulse…
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