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Real time polarization imaging of weld pool surfaces

Communication avec acte
Author
STOLZ, C.
22594 Laboratoire Electronique, Informatique et Image [UMR6306] [Le2i]
MATHIEU, A.
103192 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
AUBRETON, O.
22594 Laboratoire Electronique, Informatique et Image [UMR6306] [Le2i]
ccCONIGLIO, Nicolas
211915 Mechanics surfaces and materials processing [MSMP]

URI
http://hdl.handle.net/10985/10823
DOI
10.1117/12.2182829
Date
2015

Abstract

The search for an efficient on-line monitoring system focused on the real-time analysis of arc welding quality is an active area of research. The topography and the superficial temperature field of the weld pool can provide important information which can be used to regulate the welding parameters for depositing consistent welds. One difficulty relies on accessing this information despite the bright dazzling welding arc. In the present work, Stokes polarimetry and associated shape-from-polarization methods are applied for the analysis of the weld pool through its 810 nm-wavelength infrared emissions. The obtained information can provide a better understanding of the process, such as the usage of the topography to seek Marangoni flows direction, or to have a denser 3D map to improve numerical simulation models.

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