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An Assessment of Molten Metal Detachment Hazards for Electron Beam Welding in the Space Environment: Analysis and Test ResultsConditions under which molten metal detachments might occur in a space welding environment are analyzed. A weld pool detachment parameter specifying conditions for pool detachment by impact is derived and corroborated by experimental evidence. Impact detachment for the pool is unlikely. Impact detachment for a drop of metal on the end of the weld wire may be possible under extreme conditions. Other potential causes of molten metal detachment considered, vaporization pressure forces and wire flickout from the pool, did not appear to present significant detachment threats.
Document ID
19980119852
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Nunes, A. C., Jr. (NASA Marshall Space Flight Center Huntsville, AL United States)
Russell, C. (NASA Marshall Space Flight Center Huntsville, AL United States)
Bhat, B. (NASA Marshall Space Flight Center Huntsville, AL United States)
Fragomeni, J. M. (Ohio Univ. Athens, OH United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1998
Subject Category
Engineering (General)
Report/Patent Number
M-868
NAS 1.15:207979
NASA/TM-1998-207979
Report Number: M-868
Report Number: NAS 1.15:207979
Report Number: NASA/TM-1998-207979
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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