Method for the non-destructive examination of a test body...

G - Physics – 01 – N

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G01N 29/44 (2006.01) G01N 29/04 (2006.01) G01N 29/26 (2006.01)

Patent

CA 2637249

The invention describes a method for the non-destructive examination of a test body having at least one acoustically anisotropic material area by means of ultrasound. The invention is distinguished by the following method steps: a) direction-specific sound propagation properties which describe the acoustically anisotropic material area are determined or provided, b) ultrasound waves are injected into the acoustically anisotropic material area of the test body, c) ultrasound waves which are reflected inside the test body are received using a multiplicity of ultrasonic transducers, d) ultrasound signals which are generated using the multiplicity of ultrasonic transducers are evaluated in such a manner that evaluation is effected in a direction- selective manner taking the direction-specific sound propagation properties as a basis.

L'invention concerne un procédé d'examen non destructif par ultrasons d'une éprouvette dont au moins une région est constituée d'un matériau acoustiquement anisotrope. L'invention est caractérisée par les étapes suivantes: a) détermination ou fourniture des propriétés de propagation acoustique spécifiques à la direction, qui décrivent la région constituée d'un matériau acoustiquement anisotrope, b) application d'ondes ultrasonores dans la région de l'éprouvette constituée d'un matériau acoustiquement anisotrope, c) à l'aide de plusieurs convertisseurs d'ultrasons, réception des ondes ultrasonores réfléchies à l'intérieur de l'éprouvette, d) évaluation des signaux d'ultrasons produits par les différents convertisseurs d'ultrasons de telle sorte que l'évaluation s'effectue sélectivement par rapport à la direction et sur la base des propriétés de propagation acoustique spécifiques à la direction.

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