G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/12 (2006.01)
Patent
CA 2522216
The invention relates to a method for testing the impermeability of components (1) that contain cavities (7). On at least one side of the component (1) to be tested, at least the surface to be tested is completely wetted with a foam- producing testing liquid (11). The aim of the invention is to create a method that can be carried out as quickly and easily as possible, during which the component (1) to be tested is influenced as little as possible by the testing liquid (11). To this end, the component (1) is subjected to an increase in temperature, and the surface of the component (1) to be tested is subsequently examined with regard to the formation of bubbles (12) in the testing liquid (11). The testing liquid (11) preferably consists of 10 to 20 % dissolved surfactants, 2 to 6 % alcohol, and 75 to 78 % water and a maximum of 5 % auxiliary agents.
L'invention concerne un procédé permettant de contrôler l'étanchéité de composants (1) comportant des cavités (7), ce procédé consistant à enduire totalement au moins la surface à contrôler, au moins sur une face du composant (1) à contrôler, d'un liquide d'essai (11) moussant. L'objectif de l'invention est de créer un procédé de ce type qui puisse être mis en oeuvre le plus rapidement et le plus simplement possible et au cours duquel le liquide d'essai (11) affecte le moins possible le composant (1) à contrôler. A cet effet, ledit composant (1) est soumis à une élévation de température, puis la surface à contrôler fait l'objet d'un examen destiné à mettre en évidence la formation de bulles (12) au niveau du liquide d'essai (11). Ledit liquide d'essai (11) comprend de préférence 10 % à 20 % de tensioactifs dissous, 2 % à 6 % d'alcool et 75 % à 78 % d'eau, et 5 % d'adjuvants au maximum.
Holler Helmuth
Stephan Walter A.
Facc Ag
Fischer Advanced Composite Components Ag
Macrae & Co.
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