Real time polarization imaging of weld pool surface

C. Stolz; N. Coniglio; A. Mathieu; O. Aubreton

doi:10.1117/12.2182829

30 April 2015 Real time polarization imaging of weld pool surface

C. Stolz, N. Coniglio, A. Mathieu, O. Aubreton

Proceedings Volume 9534, Twelfth International Conference on Quality Control by Artificial Vision 2015; 953402 (2015) https://doi.org/10.1117/12.2182829
Event: The International Conference on Quality Control by Artificial Vision 2015, 2015, Le Creusot, France

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.

Citation Download Citation

C. Stolz, N. Coniglio, A. Mathieu, and O. Aubreton "Real time polarization imaging of weld pool surface", Proc. SPIE 9534, Twelfth International Conference on Quality Control by Artificial Vision 2015, 953402 (30 April 2015); https://doi.org/10.1117/12.2182829

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