Seam tracking with adaptive image capture for fine-tuning of a high power laser welding process

2015 ◽  
Author(s):  
Olli Lahdenoja ◽  
Tero Säntti ◽  
Mika Laiho ◽  
Ari Paasio ◽  
Jonne K. Poikonen
Keyword(s):  
Laser Welding ◽  
High Power ◽  
Welding Process ◽  
Seam Tracking ◽  
Fine Tuning ◽  
High Power Laser ◽  
Power Laser ◽  
Image Capture ◽  
Laser Welding Process

Development of high power laser welding process for pipe

1996 ◽  
Author(s):  
Tomotaka Hayashi ◽  
Yoji Inaba ◽  
Yosiyuki Matuhiro ◽  
Tateo Yamada ◽  
Takeo Kudo ◽  
...  
Keyword(s):  
Laser Welding ◽  
High Power ◽  
Welding Process ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Welding Process

Segmentation of Molten Pool Infrared Images Using Morphology during High Power Disk Laser Welding

2012 ◽  
Vol 201-202 ◽  
pp. 91-94
Author(s):  
Yan Xi Zhang ◽  
Xiang Dong Gao
Keyword(s):  
Laser Welding ◽  
High Power ◽  
Molten Pool ◽  
Welding Process ◽  
Histogram Equalization ◽  
Welding Quality ◽  
Infrared Images ◽  
Traditional Methods ◽  
Disk Laser ◽  
Laser Welding Process

Configuration of a molten pool is related to the laser welding quality. Analyzing the configuration of a molten pool is important to monitor the laser welding process. This paper proposes a method of segmentation of a molten pool and its shadow during high power disk laser welding, consequently provides the groundwork for reconstruction of the molten pool and analysis of welding quality. Subsection linear stretching histogram equalization was applied to enhance the contrast of the original images firstly, and then edge detection was used to highlight the edges. After that we used the morphology filtering method to produce the segmentation mask, and then combined the mask with the original images to get the final segmentation results. Also, the proposed method was compared with other traditional methods. The experimental results showed that our method not only could give better segmentation results and process large quantities images automatically, but also overcame the less-segmentation problems of traditional methods.

Welding characteristics of S45C medium carbon steel in laser welding process using a high power CW Nd:YAG laser

2004 ◽  
Vol 39 (19) ◽  
pp. 6117-6119 ◽  
Author(s):  
Young-Tae Yoo ◽  
Dong-Gyu Ahn ◽  
Kung-Bo Ro ◽  
Seong-Wook Song ◽  
Ho-Jun Shin ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Laser Welding ◽  
High Power ◽  
Nd:Yag Laser ◽  
Welding Process ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Laser Welding Process

Structure and Properties of High Power Laser Welding of High Strength Steel B450LAD for Vehicles

2008 ◽  
Vol 35 (12) ◽  
pp. 2047-2051 ◽  
Author(s):  
李亚玲 Li Yaling ◽  
黄坚 Huang Jian ◽  
高志国 Gao Zhiguo ◽  
吴毅雄 Wu Yixiong ◽  
阎启 Yan Qi
Keyword(s):  
Laser Welding ◽  
High Power ◽  
High Strength Steel ◽  
High Strength ◽  
Structure And Properties ◽  
High Power Laser ◽  
Power Laser

Investigations on in-process control of penetration depth for high-power laser welding of thick steel-aluminum joints

2019 ◽  
Vol 31 (2) ◽  
pp. 022418 ◽  
Author(s):  
Rabi Lahdo ◽  
Oliver Seffer ◽  
Stefan Kaierle ◽  
Ludger Overmeyer
Keyword(s):  
Process Control ◽  
Laser Welding ◽  
Penetration Depth ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Thick Steel

Study of Plume Behavior during High-Power Disk Laser Welding

2012 ◽  
Vol 201-202 ◽  
pp. 1076-1079
Author(s):  
De Yong You ◽  
Xiang Dong Gao
Keyword(s):  
Laser Welding ◽  
High Power ◽  
High Speed ◽  
Welding Process ◽  
Image Sequences ◽  
Process Conditions ◽  
High Speed Photography ◽  
Disk Laser ◽  
Industrial Manufacturing ◽  
Laser Welding Process

Laser welding process has been widely used in industrial manufacturing. The purpose of this paper is to explore the inter-relation between laser welding results and the laser-induced plume behavior. High-power disk laser welding of stainless steel type304 was performed at different welding speeds. Combing the high speed camera and ultraviolet sensing filter, the plume image sequences of laser welding process have been obtained. Plume features including plume volume and plume flowing direction have been extracted by using high-speed photography and image processing technology. The dynamic behavior of laser-induced plume was investigated. The results showed that the laser-induced plume feature, especially the plume volume, was closely related to laser welding process conditions.

Experimental and Simulation Studies of Helium Channel Reconstruction for Test Blanket Module Fabrication by High-Power Laser Welding

2014 ◽  
Vol 65 (2) ◽  
pp. 199-204 ◽  
Author(s):  
S. Kumar ◽  
C. S. Viswanadham ◽  
S. Bhattacharya ◽  
S. B. Roy ◽  
K. Bhanumurthy ◽  
...  
Keyword(s):  
Laser Welding ◽  
High Power ◽  
Simulation Studies ◽  
High Power Laser ◽  
Power Laser
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