Improved laser-ultrasound inspection using infrared...

G - Physics – 01 – N

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G01N 29/22 (2006.01) G01N 25/72 (2006.01) G01N 29/24 (2006.01)

Patent

CA 2671741

An inspection system is provided to examine internal structures of a target material. This inspection system combines an ultrasonic inspection system and a thermographic inspection system. The thermographic inspection system is attached to ultrasonic inspection and modified to enable thermographic inspection of target materials at distances compatible with laser ultrasonic inspection. Quantitative information is obtained using depth infrared (IR) imaging on the target material. The IR imaging and laser-ultrasound results are combined and projected on a 3D projection of complex shape composites. The thermographic results complement the laser-ultrasound results and yield information about the target material's internal structure that is more complete and more reliable, especially when the target materials are thin composite parts.

L'invention concerne un système d'inspection destiné à examiner les structures internes d'un matériau cible. Ce système d'inspection combine un système d'inspection ultrasonore et un système d'inspection thermographique. Le système d'inspection thermographique est raccordé au système d'inspection ultrasonore et modifié afin de permettre l'inspection thermographique de matériaux cibles à des distances compatibles avec une inspection ultrasonore au laser. Des informations quantitatives sont obtenues par imagerie infrarouge (IR) en profondeur sur le matériau cible. Les résultats de l'imagerie IR et de l'inspection ultrasonore au laser sont combinés et projetés sur une projection en 3D de composites de formes complexes. Les résultats thermographiques viennent compléter les résultats de l'inspection ultrasonore au laser et fournissent des informations sur la structure interne du matériau cible qui sont plus complètes et plus fiables, en particulier lorsque les matériaux cibles sont des pièces composites fines.

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