Method and device for testing a structural component having...

G - Physics – 01 – N

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G01N 29/26 (2006.01) G01B 11/00 (2006.01) G01B 11/24 (2006.01)

Patent

CA 2526835

The invention relates to a method and to a device for testing a component having a complex surface contour, by means of ultrasound. At least one ultrasonic testing head (UPK) is guided along the surface contour (OK) of the component (BT) by means of a manipulator (MM) comprising several axial drives (MX, MJ, MZ, MA, MB) on several axes at a defined distance (A). The axial drives (MX, MJ, MZ, MA, MB) of the manipulator (MM) are processed in a synchronous manner along predetermined supporting points in order to ensure improved measuring accuracy even in components with a complex curved surface contour, such that a trigger drive (MRT) is controlled in a synchronised manner with the axial drives (MX, MJ, MZ, MA, MB) and is processed together with all of the axial drives which are engaged corresponding to a predetermined surface line (OL) reproducing the surface contour (OK). The trigger drive (MRT) is generated in relation to the surface line (OL) of the complex surface contour equidistant line trigger pulse.

L'invention concerne un procédé et un dispositif pour contrôler par ultrasons un élément de construction pourvu d'une surface au contour complexe, au moins une tête de contrôle à ultrasons (UPK) étant guidée par un manipulateur (MM) doté de plusieurs entraînements axiaux (MX, MJ, MZ, MA, MB) le long du contour de surface (OK) dans plusieurs ayant un écartement défini (A). L'invention vise à réaliser des mesures de grande précision même sur des éléments de construction pourvus d'une surface à contour complexe courbe. A cet effet, les entraînements axiaux (MX, MJ, MZ, MA, MB) du manipulateur (MM) sont déplacés de manière synchrone le long de points d'appui déterminés, un entraînement déclencheur (MRT) est piloté en synchronisation avec les entraînements axiaux (MX, MJ, MZ, MA, MB) et il est déplacé avec tous les entraînements axiaux solidaires en fonction d'une ligne superficielle (OL) déterminée représentant le contour de surface (OK), cet entraînement déclencheur (MRT) générant des impulsions de déclenchement équidistantes relativement à la ligne superficielle (OL) du contour de surface.

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