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Laser-based magnetic micro-inscription : surface heating versus deep penetration regime
ID Pogačar, Marko (Avtor), ID Jezeršek, Matija (Avtor)

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Izvleček
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.

Jezik:Angleški jezik
Ključne besede:magnetic inscriptions, surface heating, deep penetration heating, adaptive laser, power control, microstructure transformation, magnetic encoder
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Recenzirani rokopis
Leto izida:2019
Št. strani:Str. 164-170
Številčenje:Vol. 114
PID:20.500.12556/RUL-106190 Povezava se odpre v novem oknu
UDK:535.13(045)
ISSN pri članku:0030-3992
DOI:10.1016/j.optlastec.2019.01.051 Povezava se odpre v novem oknu
COBISS.SI-ID:16468251 Povezava se odpre v novem oknu
Datum objave v RUL:07.02.2019
Število ogledov:2095
Število prenosov:627
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Gradivo je del revije

Naslov:Optics and laser technology
Skrajšan naslov:Opt. laser technol.
Založnik:Elsevier
ISSN:0030-3992
COBISS.SI-ID:26072576 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:magnetne oznake, površinsko gretje, adaptivno krmiljenje laserske moči, mikrostrukturna transformacija, magnetni enkoderji, parnično gretje

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:L2-8183, P2-0392
Naslov:Visoko prilagodljivi vlakenski laserji velikih moči za uporabo v industriji, Optodinamika

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