non-destructive testing, particularly for pipe work in progress or finished state

摘要

Device which is a tool to assist the operation, for non-destructive control during manufacture or at the outlet thereof, of steel products such as tubes or other long products being intended this tool to obtain information on any imperfections of the product, from return signals that are picked up (73) consecutively to the selective excitation (70) emitting ultrasonic sensors according to a law of time selected by receiving ultrasonic sensors forming an array of selected geometry, mounted ultrasonic coupling with the product through a liquid medium, with relative rotation / translation between the pipe and the transducer arrangement, such exploitation tool being characterized by comprising: - a converter (891; 892) capable of selectively isolate a digital representation of possible echoes in designated time windows a transform block (930) capable of generating a 3D image - s, depending on the relative movement of rotation / translation, this representation the amplitude and time of flight of at least one echo, and generating a 3D parallelepipedic graph, comprising (901; 902) of any imperfections in the tube from the 3D graph and a database, - a filter (921; 922) capable of determining, in the images (901; 902), zones of hypothetical imperfection (Zcur), and properties of each hypothetical imperfection, - an output stage configured to generate a signal conformity or nonconformity of a product.