Share Email Print
cover

Proceedings Paper

Automated and aluminum welding technology
Author(s): Clyde S. Jones
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Automated welding technology and techniques for welding advanced aluminum alloys with potential for industrial and commercial applications have been developed by the National Aeronautics and Space Administration at the Marshall Space Flight Center. These technologies are being offered to private companies for commercial development, and include: Variable polarity plasma arc welding, a welding process that produces high-quality aluminum welds for fabrication of the space shuttle external tank and space station common module structures. This process uses reverse polarity pulses to produce welds virtually free of internal defects. Advanced weld sensor technology, comprised of machine vision-based weld seam tracking that uses both structured and global laser illumination for finding weld joints, even those difficult to discern by the human eye. Weld pool feedback is accomplished with a vision system to measure arc symmetry and molten weld pool geometry. A weld bead profiler trails the welding torch. It provides feedback to the process control system, which records quality control data.

Paper Details

Date Published: 4 October 1994
PDF: 9 pages
Proc. SPIE 2270, NASA/SPIE Conference on Spin-Off Technologies from NASA for Commercial Sensors and Scientific Applications, (4 October 1994); doi: 10.1117/12.188821
Show Author Affiliations
Clyde S. Jones, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 2270:
NASA/SPIE Conference on Spin-Off Technologies from NASA for Commercial Sensors and Scientific Applications
Nona K. Minnifield, Editor(s)

© SPIE. Terms of Use
Back to Top