Improvement of reliability of welding by in-process sensing and control (development of smart welding machines for girth welding of pipes). Third progress report
This two part progress report covers work from March 16, 1980 to March 15, 1981. The overall objective of this program is to improve the reliability of welding by developing smart welding machines. In addition to exercising strict control of the welding machinery, the smart welding machine exercises real-time, closed-loop control of the weld itself. The weld quality, for the work to date, has been defined in terms of acceptable (full) penetration and weld bead width. Metallurgical defects, gas inclusions and oxidation/wetting problems have not been considered explicitly. Although the concepts and techniques developed have general application to the welding field, the program is focused specifically toward the welding of pipes. Further, the present work condentrates on the root pass(es) using GTAW rather than on the filling process using GMAW.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). School of Engineering
- DOE Contract Number:
- AS02-79ER10474
- OSTI ID:
- 6162758
- Report Number(s):
- DOE/ER/10474-3; ON: DE81027464
- Country of Publication:
- United States
- Language:
- English
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