Condition based maintenance of the two-beam laser welding in high volume manufacturing of piezoelectric pressure sensor

Kenda, Miha (avtor), Klobčar, Damjan (avtor), Bračun, Drago (avtor)

Two-beam laser welding (TBLW) is an advanced process for precise, low distortion joining of cylindrical miniature parts. The process is composed of a laser source, optics and various actuators, which form a sophisticated system for control and maintenance in high volume manufacturing. A well-established method for identifying welding defects and ensuring welding quality is the monitoring of plasma light emission in TBLW. Although such monitoring systems can detect a change in process status, they are not able to diagnose the nature of the fault. The main challenge in this research was to extend the use of quality-based monitoring systems to measure additional deterioration-related parameters and to estimate system deterioration from them by using expert knowledge. This paper shows a novel condition-based maintenance (CBM) for the TBLW system, which performs condition identification using online monitoring of plasma light emission in combination with offline inspection of the seam macrographs. A combination of quality parameters derived from seam macrographs of defective parts is used to identify process deterioration, such as contamination of the optics, misalignment of the optomechanical system, or reduced laser power. The information obtained is used to make predefined process adjustments based on expert domain knowledge. The implementation of the developed CBM in high volume manufacturing of piezoelectric pressure sensors resulted in more predictable TBLW by reducing system failures as well as shorter diagnosis times.

• Jezik: Angleški jezik
• Ključne besede: two-beam laser welding, deterioration, condition-based maintenance, monitoring, expert knowledge
• 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: 2021
• Št. strani: Str. 117-126
• Številčenje: Vol. 59
• PID: 20.500.12556/RUL-138454
• UDK: 621.791.72(045)
• ISSN pri članku: 0278-6125
• DOI: 10.1016/j.jmsy.2021.02.007
• COBISS.SI-ID: 52913667
• Datum objave v RUL: 21.07.2022

Gradivo je del revije

• Naslov: Journal of manufacturing systems
• Skrajšan naslov: J. manuf. syst.
• Založnik: Elsevier, Society of Manufacturing Engineers
• ISSN: 0278-6125
• COBISS.SI-ID: 574226

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: dvožarkovno lasersko varjenje, degradacija, vzdrževanje na osnovi stanja sistema, nadzor, ekspertno znanje

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: Hidria Holding d.o.o.

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0270
• Naslov: Proizvodni sistemi, laserske tehnologije in spajanje materialov