Characterizing weld pool surfaces from polarization state of thermal emissions.
In this Letter, a vision-based remote sensing methodology is proposed to measure the topography of weld pool surfaces from one single view. Thermal radiations emitted by the hot liquid metal at a wavelength within the arc plasma blind spectral window are acquired by a wavefront division polarimetric system. The refractive index of the liquid metal and the topography of the weld pool surface are inferred from the polarimetric state of the thermal radiations.
Université de Bourgogne Laboratoire ICB, UMR CNRS 6303, Le Creusot, France.
Nicolas
N
Coniglio
Alexandre
A
Mathieu
Olivier
O
Aubreton
Christophe
C
Stolz