Engineering topics

Shelley, D. Mark

Publications and source records attributed to Shelley, D. Mark.

2 records

NASA NTRS1996

Copper Gas Diffusers For Purging Line-Focus Laser Welds

Modified flow diffusers built for inert-gas purging of welds made with 5-kW CO(2) lasers operating with line-focus optics in conduction mode instead of with point-focus optics in customary keyhole mode. Diffusers made of copper components brazed together, robust enough to withstand strong reflections of line-focused laser energy.

Fonteyne, Steve L.↗

NASA NTRS1992

Robotic Welding Of Injector Manifold

Brief report presents history, up through October 1990, of continuing efforts to convert from manual to robotic gas/tungsten arc welding in fabrication of main injector inlet manifold of main engine of Space Shuttle. Includes photographs of welding machinery, welds, and weld preparations. Of interest to engineers considering establishment of robotic-welding facilities.

Gilbert, Jeffrey L.↗