Weld pool surface temperature measurement from polarization state of thermal emission
Source abstract
Abstract
This paper presents a passive polarimetry method using a division of aperture optical device in order to measure the temperature distribution at the weld pool surface. Thermal emission from a hot liquid metal was investigated at a near-infrared wavelength corresponding to a blind spectral window of a helium plasma generated during gas tungsten arc welding process. The refractive index of liquid metal and the surface radiance are deduced from the polarisation state of thermal emissions. Based upon the knowledge of both characteristics, the temperature distribution can be calculated.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Surface Roughness and Optical Measurements · Calibration and Measurement Techniques · Optical Polarization and Ellipsometry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
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