Simulation of Laser Micro-Machining

Richard, Berenyi [Berényi, Richárd (Lézeres mikromegm...), szerző] Elektronikai Technológia Tanszék (BME / VIK)

Angol nyelvű Tudományos Konferenciaközlemény (Egyéb konferenciaközlemény)
    Our work is to improve the generation of 3D flexible structures by laser micromachining. The purpose is to extract the material by an ablation of matter in order to achieve multi-bend structure. This multi-bend part will be the key for 3D structures. For that, a frequency multiplied Nd:YAG laser equipped with a galvanometric head was used. For optimizing the laser irradiation time and power a thermal modeling of the laser matter interaction for a continuous laser impact case is presented. The paper models numerically the localized three-dimensional temperature distribution in a polyimide caused by a moving Gaussian laser beam by FEM (Finite Element Method) analysis. The beam’s penetration depth, which can be described with an absorption coefficient, depends on the ambient temperature. The model examines the penetration depth and the influences of the laser motion on the transient temperature distribution. As the maximum temperature is mesh dependent we decided to chose 10 μm initial mesh with 1.01 mesh grow, so the laser beam diameter occurs 20 μm. The overall heat flux and temperature distribution on a macroscopic level are both accurate.
    Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
    2021-08-03 12:35