A statistical study for optimum surface roughness and engraving depth

The aim of this study is to investigate the effect of scan times on surface roughness and engraving depth an experimental design was implemented to AISI H13 tool steed workpiece using fiber laser. For this purpose, an experimental design plan was constituted using full factorial design and results were evaluated for surface roughness and engraving depth. The results showed that the scan times and the scan speed significantly affect both surface roughness and engraving depth. In order to characterize the surface roughness and engraving depth, two linear regression models were constituted. © 2010 American Institute of Physics.