Non-Destructive Identification of Weld-Boundary and Porosity Formation During Laser Transmission Welding by Using Optical Coherence Tomography

Kanghae Kim; Pilun Kim; Jaeyul Lee; Suwon Kim; Sungjo Park; Soo Ho Choi; Junho Hwang; Jong Hoon Lee; Ho Lee; Ruchire Eranga Wijesinghe; Mansik Jeon; Jeehyun Kim

doi:10.1109/ACCESS.2018.2882527

IEEE Access (Jan 2018)

Non-Destructive Identification of Weld-Boundary and Porosity Formation During Laser Transmission Welding by Using Optical Coherence Tomography

Kanghae Kim,
Pilun Kim,
Jaeyul Lee,
Suwon Kim,
Sungjo Park,
Soo Ho Choi,
Junho Hwang,
Jong Hoon Lee,
Ho Lee,
Ruchire Eranga Wijesinghe,
Mansik Jeon,
Jeehyun Kim

Affiliations

Kanghae Kim: School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea
Pilun Kim: Institute of Biomedical Engineering Research, Kyungpook National University, Daegu, South Korea
Jaeyul Lee: School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea
Suwon Kim: Institute of Biomedical Engineering Research, Kyungpook National University, Daegu, South Korea
Sungjo Park: Laser Application Center, Institute of Advanced Convergence Technology, Kyungpook National University, Daegu, South Korea
Soo Ho Choi: Laser Application Center, Institute of Advanced Convergence Technology, Kyungpook National University, Daegu, South Korea
Junho Hwang: Laser Application Center, Institute of Advanced Convergence Technology, Kyungpook National University, Daegu, South Korea
Jong Hoon Lee: Laser Application Center, Institute of Advanced Convergence Technology, Kyungpook National University, Daegu, South Korea
Ho Lee: School of Mechanical Engineering, Kyungpook National University, Daegu, South Korea
Ruchire Eranga Wijesinghe: Department of Biomedical Engineering, Kyungil University, Gyeongsan, South Korea
Mansik Jeon: ORCiD; School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea
Jeehyun Kim: School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea

DOI: https://doi.org/10.1109/ACCESS.2018.2882527
Journal volume & issue: Vol. 6
pp. 76768 – 76775

Abstract

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Laser transmission welding offers significant benefits over conventional welding techniques enabling single-stage rapid plastic joining. The quality of laser transmission welded products is commonly assessed by measuring the weld penetration depth, hardened weld boundary, and inspecting the formation of porosity. However, the existing methods of verification are inevitably accompanied by destruction of the specimen. Thus, non-destructive quality assessment methods for laser transmission welding have gained attention recently. Here, we demonstrated an extended industrial application of 860 nm wavelength-based spectral domain optical coherence tomography for the non-destructive inspection of the aforementioned quality parameters of laser transmission welded industrial plastic materials, i.e., polycarbonate and acrylonitrile butadiene styrene copolymer. The acquired cross-sectional resolution and volumetric and intensity profiles sufficiently contributed to the quality assessment procedure, revealing the weld boundary and porosity formation, and thus confirming the potential applicability of optical coherence tomography for the quality inspection of laser transmission welded products.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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