Analysis of laser welding process with the mathematical model GMDH

1989 ◽  
Author(s):  
I. de Iorio ◽  
V. Sergi ◽  
V. Tagliaferri
Keyword(s):  
Mathematical Model ◽  
Laser Welding ◽  
Welding Process ◽  
The Mathematical Model ◽  
Laser Welding Process

Study on Mathematical Model of Temperature Field in the Laser Welding Process

2010 ◽  
Vol 426-427 ◽  
pp. 89-92
Author(s):  
Hong Feng Wang ◽  
Dun Wen Zuo ◽  
Ming Min Huang ◽  
Hong Miao
Keyword(s):  
Mathematical Model ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Heat Source ◽  
Laser Welding ◽  
Welding Process ◽  
Actual Process ◽  
Analytical Results ◽  
The Mathematical Model ◽  
Laser Welding Process

From the laser welding actual process, the welding heat source model of laser welding process was established, that is, superposition heat source. According to the knowledge of thermodynamics, the establishment of a welding process, the mathematical model of temperature distribution of laser welding process was obtained by laser welding heat source. Finally, the finite element simulation of welding temperature distribution was used. The simulated results were compared with the analytical results of mathematical model of temperature field, it was proved consistent between simulated results and analytical results, at the same time it can account for the correctness of the mathematical model of temperature field.

Analysis of laser welding process with the mathematical model GMDH

1991 ◽  
Author(s):  
I. de Iorio ◽  
Vincenzo Sergi ◽  
V. Tagliaferri
Keyword(s):  
Mathematical Model ◽  
Laser Welding ◽  
Welding Process ◽  
The Mathematical Model ◽  
Laser Welding Process

Numerical modeling of laser welding process for high restraint joints

2004 ◽  
Author(s):  
D. Mark Douglass ◽  
Gonghyun Jung ◽  
Shuchi Khurana ◽  
Robert N. Yancey
Keyword(s):  
Numerical Modeling ◽  
Laser Welding ◽  
Welding Process ◽  
Laser Welding Process

INVESTIGATION OF HUMPING FORMATION BASED ON MELT FLOW ANALYSIS IN HIGH-SPEED LASER WELDING PROCESS

2013 ◽  
Vol 49 (6) ◽  
pp. 725 ◽  
Author(s):  
Yinglei PEI ◽  
Aiping WU ◽  
Jiguo SHAN ◽  
Jialie REN
Keyword(s):  
Laser Welding ◽  
High Speed ◽  
Flow Analysis ◽  
Welding Process ◽  
Melt Flow ◽  
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.

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