Weld pool surface temperature measurement from polarization state of thermal emission
Article dans une revue avec comité de lecture
Auteur
Résumé
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.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Communication avec acteThe 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 ...
-
Article dans une revue avec comité de lectureIn this work, the nano-wear-induced behavior of selective laser melting (SLM) processed commercial pure titanium was investigated under several applied loads from 1 mN to 100 mN. The dense (over 99%) commercial pure titanium ...
-
Article dans une revue avec comité de lectureSPITZ, N.; MEZGHANI, Sabeur; EL MANSORI, Mohamed; CONIGLIO, Nicolas; MONTAGNE, Alex (Elsevier, 2018)Nowadays buildings construction is performed by pouring concrete into molds called formworks that are usually prefabricated metallic modules. Defects such as stripping may possibly form during the removal of the formwork ...
-
Article dans une revue avec comité de lectureSPITZ, N.; MEZGHANI, Sabeur; EL MANSORI, Mohamed; CONIGLIO, Nicolas; MONTAGNE, Alex (Elsevier, 2018)The sticking of the concrete on metallic formworks during building construction generates many concrete wall defects. Several solutions have been proposed, among which surface lubrication and polymeric coatings are commonly ...
-
Article dans une revue avec comité de lectureThe friction of concrete on the interior skin of formworks takes place during the pouring of concrete into the molds. The present work investigates the friction of a granular material (i.e. fresh concrete) against metallic ...