Podrobno

Fusing optical coherence tomography and photodiodes for diagnosis of weld features during remote laser welding of copper-to-aluminum
ID Brežan, Tine (Avtor), ID Franciosa, Pasquale (Avtor), ID Jezeršek, Matija (Avtor), ID Ceglarek, Dariusz (Avtor)

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Izvleček
This study has been designed to investigate whether variations in the features of laser weldments can be isolated and diagnosed by fusing photodiodes and optical coherence tomography (OCT). Two manufacturing scenarios (variation in laser power and focal offset) have been considered during remote laser welding of 0.2 mm thick Cu foils on 2 mm thick Al 1050 plates with an adjustable ring mode laser integrated with a 1D oscillation head. The process was monitored by measuring weld penetration depth with OCT and by process emissions (plasma and back-reflection) via photodiodes. The acquisition frequency of all signals was 40 kHz. Strong correlations (r > 0.75) were shown between plasma, back-reflection, and OCT signals and measured depth and width of the weld. Weak correlations (r < 0.5) between voids, cracks, and sensor signals were observed. Although plasma is the predominant signal that carries most of the information about the process, and the OCT allows direct measurement of the penetration depth, their integration reached 87% classification accuracy of the tested welding scenarios. The main misclassification was observed between “good weld” and “over weld,” defined by the measured weld depth. Sensor fusion strategies with manufacturing implications are discussed throughout the paper.

Jezik:Angleški jezik
Ključne besede:laser welding, process monitoring, OCT, photodetectors
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2023
Št. strani:10 str,
Številčenje:Vol. 35
PID:20.500.12556/RUL-143900 Povezava se odpre v novem oknu
UDK:621.791
ISSN pri članku:1042-346X
DOI:10.2351/7.0000803 Povezava se odpre v novem oknu
COBISS.SI-ID:138309123 Povezava se odpre v novem oknu
Datum objave v RUL:18.01.2023
Število ogledov:990
Število prenosov:281
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del revije

Naslov:Journal of laser applications
Skrajšan naslov:J. laser appl.
Založnik:Laser Institute of America
ISSN:1042-346X
COBISS.SI-ID:14231813 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:lasersko varjenje, nadzor procesa, OCT, fotodetektorji

Projekti

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P2-0392-2020
Naslov:Optodinamika

Financer:UKRI - UK Research and Innovation
Številka projekta:50267
Naslov:Aluminium Intensive Vehicle Enclosures (ALIVE)

Financer:UKRI - UK Research and Innovation
Številka projekta:10009813
Naslov:FASA – A Flexible, Automated Stator Assembly Platform for Lightweight Electric Motors

Financer:Drugi - Drug financer ali več financerjev
Program financ.:WMG HVM Catapult

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