ISO 22007-4:2017
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Plastiques — Détermination de la conductivité thermique et de la diffusivité thermique — Partie 4: Méthode flash laser
| Published By | Publication Date | Number of Pages |
| ISO | 2017-06 | 24 |
L'ISO 22007-4:2017 spécifie une méthode de détermination de la diffusivité thermique d'un disque plein mince en plastique suivant la direction de l'épaisseur par la méthode flash laser. Cette méthode est fondée sur le mesurage de l'élévation de température sur la face arrière d'une éprouvette sous forme de disque mince due à une courte impulsion énergétique sur la face avant.
La méthode peut être utilisée pour les plastiques compacts homogènes ou composites présentant une structure isotrope ou orthotrope. En général, cela inclut les matériaux ayant une diffusivité thermique, a, comprise dans la plage 1 × 10-7 m2·s-1 < a < 1 × 10-4 m2·s-1. Les mesurages peuvent être effectués en environnements gazeux et sous vide sur une plage de températures comprises entre -100 °C et +400 °C.
NOTE Pour des éprouvettes non homogènes, les valeurs mesurées peuvent dépendre de l'épaisseur de l'éprouvette.
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