Infrared Thermography As A Control For The Welding Process

Mansoor A Khan; Nels H Madsen; Bryan A Chin

doi:10.1117/12.939155

27 March 1984 Infrared Thermography As A Control For The Welding Process

Mansoor A Khan, Nels H Madsen, Bryan A Chin

Proceedings Volume 0446, Thermosense VI: Thermal Infrared Sensing for Diagnostics and Control; (1984) https://doi.org/10.1117/12.939155
Event: Thermal Infrared Sensing for Diagnostics and Control: Thermosense VI, 1983, Oak Brook, United States

Abstract

A feasibility study was performed to determine if infrared thermography could be used to detect perturbations in the arc welding process which result in defects. Data were gathered using an infrared camera with a resolution of .2°C which was trained on the molten metal pool during welding. Several defects were then intentionally induced and the resulting thermal images were preserved on film. These images revealed that different types of weld defects induce different characteristic changes in the thermal image by detectably altering the temperature field around the weld. These perturbations in the temperature field can be used to identify and locate defects such as arc misalignment, plate gap, puddle impurities etc. Macrostructural examinations permitted investigations into the relationships between weld puddle penetration depth and the temperature field. Using computer aided processing of these thermal images, it is expected that the welding process can be controlled to a higher degree than is presently possible.

Citation Download Citation

Mansoor A Khan, Nels H Madsen, and Bryan A Chin "Infrared Thermography As A Control For The Welding Process", Proc. SPIE 0446, Thermosense VI: Thermal Infrared Sensing for Diagnostics and Control, (27 March 1984); https://doi.org/10.1117/12.939155

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