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Detecting beam offs...
Detecting beam offsets in laser welding of closed-square-butt joints by wavelet analysis of an optical process signal
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- Elefante, Arianna (författare)
- University of Bari, Physics Department, Via Amendola 173, 70126 Bari, Italy
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- Nilsen, Morgan (författare)
- Högskolan Väst,Avdelningen för produktionssystem (PS),PTW
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- Sikström, Fredrik, 1971- (författare)
- Högskolan Väst,Avdelningen för produktionssystem (PS),PTW
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- Christiansson, Anna-Karin, 1947- (författare)
- Högskolan Väst,Avdelningen för produktionssystem (PS),PTW
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- Maggipinto, Tommaso (författare)
- University of Bari, Physics Department, Via Amendola 173, 70126 Bari, Italy
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- Ancona, Antonio, 1974- (författare)
- Högskolan Väst,Avdelningen för produktionssystem (PS),IFN-CNR Institute for Photonics and Nanotechnologies, Physics Department, Via Amendola 173, 70126 Bari, Italy,PTW
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: Optics and Laser Technology. - : Elsevier BV. - 0030-3992 .- 1879-2545. ; 109, s. 178-185
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Robotized laser beam welding of closed-square-butt joints is sensitive to the positioning of the laser beam with respect to the joint since even a small offset may result in a detrimental lack of sidewall fusion. An evaluation of a system using a photodiode aligned coaxial to the processing laser beam confirms the ability to detect variations of the process conditions, such as when there is an evolution of an offset between the laser beam and the joint. Welding with different robot trajectories and with the processing laser operating in both continuous and pulsed mode provided data for this evaluation. The detection method uses wavelet analysis of the photodetector signal that carries information of the process condition revealed by the plasma plume optical emissions during welding. This experimental data have been evaluated offline. The results show the potential of this detection method that is clearly beneficial for the development of a system for welding joint tracking.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- Laser beam welding
- Joint tracking
- Butt joints
- Photodiode
- Wavelet analysis
- Production Technology
- Produktionsteknik
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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