G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 3/18 (2006.01) G01N 3/02 (2006.01)
Patent
CA 2109422
Apparatus (100) for a dynamic thermal-mechanical material testing system that not only self-resistively heats and deforms a specimen (170), both under controlled conditions, but also substantially reduces adverse affects in specimen performance, such as magnetically induced motion and non-uniform specimen heating, that would otherwise result from magnetic fields which impinge upon the specimen and are caused by high heating currents flowing in the apparatus. This reduction is achieved by spatially locating high current carrying conductors (102,102') used in the apparatus such that these conductors collectively generate substantially balanced, i.e. substantially equal, and opposite magnetic fields (431,433) that effectively cancel each other out in a volumetric region in the apparatus which contains the specimen and particularly its work zone.
Cette invention concerne un appareil d'essai thermo-mécanique de matériaux (100) qui assure le chauffage par résistance et la déformation contrôlés d'une éprouvette (170) tout en réduisant considérablement les effets nuisibles pour la validité de l'épreuve, notamment les déplacements et le chauffage inégal de l'éprouvette que d'autres appareils produisent en raison des champs magnétiques développés autour de l'éprouvette et des courants élevés de chauffe mis en oeuvre. La réduction est obtenue en disposant les conducteurs haute intensité (102, 102') de l'appareil de telle sorte qu'ils génèrent à la hauteur de l'éprouvette et dans la zone immédiate de travail des champs magnétiques (431, 433) de signes opposés sensiblement égaux qui s'annulent.
Dynamic Systems Inc.
Fasken Martineau Dumoulin Llp
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