Multiobjective optimisation of nanosecond fiber laser milling of 2024 T3 aluminium alloy

作者: C. Leone , S. Genna , F. Tagliaferri

DOI: 10.1016/J.JMAPRO.2020.06.026

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摘要: Abstract In the present study, a 30 W Q-switched fiber laser was adopted for milling 2024 aluminium alloy sheet 2 mm in thickness. Square pockets, 10 × 10 mm2 plane dimension, were machined at maximum nominal average power (30 W), under different processing parameters: scan speed, hatching distance, pulse energy and repetitions. After machining, achieved depth (Depth) roughness (Ra) measured by way of 3D surface profiling system. addition, material removal rate (MRR) calculated as ratio between removed volume/process time. Analysis Variance to assess effect process parameters on Depth, Ra MRR. Response Surface Methodology (RSM) model behaviours; MRR found be strictly related depth. end, Multi-Response Optimisation (MRO) methodology individuate optimal conditions allowing able produce desired depths with minimum

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