On-Line Control Of Surface Contamination During Gas Tungsten Arc Welding

Ted T. Lin; H. T. Lin; Bryan A. Chin

doi:10.1117/12.7976692

1 May 1988 On-Line Control Of Surface Contamination During Gas Tungsten Arc Welding

Ted T. Lin, H. T. Lin, Bryan A. Chin

Author Affiliations +

Optical Engineering, Vol. 27, Issue 5, 275413 (May 1988). https://doi.org/10.1117/12.7976692

Abstract

The objective of this research is to apply infrared sensing techniques, artificial intelligence, and robotics to improve the welding process by on-line identification and mitigation of weld plate surface contamination. A method of in-process detection of surface contaminants during the gas tungsten arc welding of steel plate has been developed, and rudimentary corrective actions have been implemented to demonstrate closed-loop control. The study employed on-line IR sensing techniques to dynamically monitor the thermal field in front of the molten pool during the welding process. Changes in thermal pattern and in the area under thermal scans taken perpendicular to the weld seam were then used by the controlling computer to identify undesirable surface contaminants. Appropriate corrective actions were generated and employed to displace the contaminants from the welding path. A computer routine was developed that recognized changes in the thermal patterns due to surface contaminants and implemented corrective procedures. The results of this study will aid in the elimination of weld defects due to surface contamination and hence will increase the reliability and productivity of the welding process.

Citation Download Citation

Ted T. Lin, H. T. Lin, and Bryan A. Chin "On-Line Control Of Surface Contamination During Gas Tungsten Arc Welding," Optical Engineering 27(5), 275413 (1 May 1988). https://doi.org/10.1117/12.7976692

Published: 1 May 1988

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available