6533b7dbfe1ef96bd12700b3
RESEARCH PRODUCT
Real time polarization imaging of weld pool surface
Olivier AubretonAlexandre MathieuChristophe StolzN. Conigliosubject
Materials scienceMatériaux [Sciences de l'ingénieur][SPI.OPTI] Engineering Sciences [physics]/Optics / PhotonicAcousticsPolarimetryReal time imaging02 engineering and technologyWelding01 natural scienceslaw.invention010309 opticsOpticsThree dimensional sensinglaw0103 physical sciencesweld poolTraitement des images [Informatique]business.industryPolarization imagingPolarimetric imagingMonitoring system021001 nanoscience & nanotechnologyPolarization (waves)Stokes polarimetryWeld pool[SPI.OPTI]Engineering Sciences [physics]/Optics / PhotonicArc welding[ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic0210 nano-technologybusinessreal time imagingshape from polarizationthermal fielddescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-06-03 |