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Laser Machining of Alumina: Experimental and Numerical Approach for Surface Finish

机译:氧化铝的激光加工:表面光洁度的实验和数值方法

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Progress and understanding of laser-material interaction has led to the machining ofrnadvanced ceramics which previously had been near impossible to be machined effectively usingrnvarious conventional mechanical tools. In the current work, the effectiveness of machiningrnstructural alumina ceramics using a JK 701 Lumonics pulsed Nd:YAG laser operated at arnwavelength of 1.064 μm was tested. The machined surfaces were characterized using an opticalrnprofilometer and thereby the effect of laser processing parameters on the surface roughness wasrninvestigated in this study. A COMSOL~? multiphysics-based modeling approach was alsornimplemented in the current work to understand the influence of heat transfer, fluid flow, recoilrnpressure, surface tension, and rapid solidification over the surface morphology of alumina.rnHence, with both experimental and numerical thermal modeling approach, an aim is set tornestablish a relationship between the surface finish and eventually control the laser machining ofrnstructural ceramic components.
机译:激光与材料相互作用的进步和理解导致对高级陶瓷的加工,以前几乎不可能使用各种传统的机械工具对其进行有效加工。在当前的工作中,测试了使用波长为1.064μm的JK 701 Lumonics脉冲Nd:YAG激光加工结构氧化铝陶瓷的有效性。使用光学轮廓仪对加工的表面进行表征,从而在本研究中研究了激光加工参数对表面粗糙度的影响。 COMSOL〜?在当前的工作中还实施了基于多物理场的建模方法,以了解传热,流体流动,反冲压力,表面张力和快速凝固对氧化铝表面形态的影响。因此,以实验和数值热建模方法为目标设定为建立表面光洁度之间的关系,并最终控制结构陶瓷部件的激光加工。

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