20.500.12556/RUL-106190 Laser-based magnetic micro-inscription surface heating versus deep penetration regime The technology of magnetic micro-inscription can be used for in-axis positioning measurements directly from a linear actuator which reduces the cost and size of the whole system. In this paper, two different regimes for laser-based magnetic micro-inscription were compared: a surface heating and a deep penetration heating. The first regime is the same as conductive heating and the second is similar to the process of keyhole welding. The experimental results show that both processes can be effectively stabilized by means of controlling the width and depth of the microstructure transformation cross-section, as they are able to compensate for external disturbances, such as higher roughness, and the gradual accumulation of heat. From numerical analysis it could be seen that the perfect inscription should have depth equal or more than 0.8 of period of inscription and width around 0.80+/-0.05 of period which is not achievable with the surface heating regime, but only with the deep penetration regime. Results show that the deep penetration heating requires 5-times less laser energy which leads to lower heat accumulation and a more stable process, is unaffected by disturbances, such as higher roughness, and provides an almost 15% higher relative amplitude as measured by the reference magnetic sensor. magnetic inscriptions surface heating deep penetration heating adaptive laser power control microstructure transformation magnetic encoder magnetne oznake površinsko gretje adaptivno krmiljenje laserske moči mikrostrukturna transformacija magnetni enkoderji parnično gretje true false true Angleški jezik Slovenski jezik Članek v reviji 2019-02-07 13:43:43 2019-02-07 13:43:46 2025-02-24 14:07:48 0000-00-00 00:00:00 2019 0 0 Str. 164-170 Vol. 114 Jun. 2019 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2020-02-07 535.13(045) 0030-3992 10.1016/j.optlastec.2019.01.051 16468251 26072576 RAZ_Pogacar_Marko_i2019.pdf RAZ_Pogacar_Marko_i2019.pdf 1 56761A0F120C054C3491C83B763B70E9 254282f9a535638c1602c046cdf555d626d05befa2dac3838d907e2e11a46b07 4c8e8159-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116931 https://www.sciencedirect.com/science/article/pii/S0030399218306601 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116930 Fakulteta za strojništvo 0 0 0