Weld quality monitoring and seam tracking in making CO2 laser welded tube for automobile bumper beam

2004 ◽  
Author(s):  
Jeong Suh ◽  
Byung-hun Jung ◽  
Mun-Yong Lee
Keyword(s):  
Co2 Laser ◽  
Seam Tracking ◽  
Quality Monitoring ◽  
Weld Quality ◽  
Bumper Beam ◽  
Welded Tube

Real time estimation of CO2 laser weld quality for automotive industry

2002 ◽  
Vol 34 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Young Whan Park ◽  
Hyunsung Park ◽  
Sehun Rhee ◽  
Munjin Kang
Keyword(s):  
Real Time ◽  
Co2 Laser ◽  
Automotive Industry ◽  
Time Estimation ◽  
Weld Quality ◽  
Laser Weld ◽  
Real Time Estimation

Application of Microcomputers to Automatic Weld Quality Control

1980 ◽  
Vol 102 (2) ◽  
pp. 62-68 ◽  
Author(s):  
M. Tomizuka ◽  
D. Dornfeld ◽  
M. Purcell
Keyword(s):  
Control Method ◽  
Computer Control ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Seam Tracking ◽  
Process Time ◽  
Welding Parameters ◽  
Weld Quality ◽  
On Line ◽  
Welding Processes

The demand for increased productivity of welding operations has led to the expanded use of computer control to allow higher production rates while maintaining weld quality. The charateristics of the gas metal arc welding process and the relationship between welding parameters, the desired output of the welding process, and the automation of the process are discussed. A strategy for two-axis welding torch positioning and velocity control is developed based on preview control techniques. To evaluate the applicability of the proposed control method the motion of heat source along different welding paths is simulated on an analog computer with on-line control of process time constants by an LSI-11 microcomputer. The simulation results show that high quality seam tracking can be accomplished by controlling the torch motion using the proposed method. The method appears to be suitable for on-line control of welding processes.

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