| 摘要 |
Non-destructive testing device for tubes. It collects information from the imperfections of signals captured by ultrasonic receivers following the selective excitation of ultrasonic emitters according to a selected time law. The receivers form a selected geometrical layout, ultrasonically coupled by a relative rotation/translation movement with the tube. The device comprises a converter (891; 892) selectively isolating a numerical representation of echoes in designated time windows, according to the movement, and by creating an image (901; 902) of the imperfections, a filter (921: 922) that determines the presumed imperfection zones (Zcur) and their properties, a combiner (960) that prepares the digital work inputs from an extract (951; 952) of the images of an zone of imperfection, the properties of the latter taken from the filter, and context data (740), a neuronal circuit (970) that receives the work inputs, a digital decision and alarm stage (992) operating based on the neuronal circuit output, and an automated sorting and marking device (994) for the tubes considered to be non complaint by the decision and alarm stage. |
