Experimental validation of inverse heat conduction method: quenching of steels XC42 and XC80

Two inverses methods are developed to calculate the surface heat flux and temperature of a body during heat treatment. Knowing temperature of an inner point of the solid and taking into account the phase transformation non-linearity, the surface heat flux evolution is estimated by an inverse algorithm. The experimental validation of both methods is performed in XC42 and XC80 steels case

A Rare Paraneoplastic Syndrome of Lung Cancer

Achalasia is a neurodegenerative motor disease of the esophagus resulting mainly from a loss of function of the lower esophageal sphincter, the pathophysiology of which is still poorly understood. Its incidence is rare—it is 1.6 per 100,000—and its occurrence in the context of paraneoplastic syndrome has been rarely described in the literature. We report a rare case of paraneoplastic achalasia associated with lung cancer

Simulation of the thermal history and induced mechanical stresses during a plasma spray coating process

International audienceThe aim of this investigation is to combine a thermo mechanical modeling with the growing of coated material by spraying process. A numerical model has been built to describe the thermal history of a plasma spray coating. In this model the freezing of the crushed droplet (splats) by quenching and cooling creates mechanical stresses. These stresses involved cracks in the coating and also unsticking between the coating and the substrate. The practical case of alumina coating on stainless steel substrate is considered. This model tries to forecast these phenomena to put forward possible control. The 2D axisymmetrical model is based on finite element formulation. Results are compared with 1D available result and the interest of 2D extension is underlined in the present study

Simulation thermomécanique d'un dépôt de projection avec prise en compte de l'histoire thermique et dynamique du matériau d'apport

National audienc

Chondrosarcome myxoïde extra-osseux: à propos d’un cas et revue de la littérature

Le chondrosarcome primitif des tissus mous est beaucoup plus rare que son homonyme intra-osseux, le type myxoïde est une entité distincte sur le plan clinique, histologique, immuno-histo-chimique, cytogénétique et évolutif. Le but de cette étude est d'évaluer les caractéristiques de cette tumeur et de mettre en évidence sa difficulté diagnostique et thérapeutique. Cette étude rapporte un cas de chondrosarcome myxoïde extra-osseux atteignant les parties molles, il s'agit d'une femme âgée de 28 ans ayant une localisation au niveau de la face antéro-externe du tiers moyen de la cuisse gauche, la patiente a été explorée par une IRM. L'examen histologique a confirmé le diagnostic et la patiente a bénéficié d'une résection large complétée par une chimiothérapie adjuvante, et le suivi n'a déploré aucune récidive ni métastase. Le diagnostic des chondrosarcomes primitifs extra osseux est particulièrement histologique et leur traitement repose sur la résection chirurgicale large suivie d'une chimiothérapie adjuvante