G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 29/07 (2006.01) G01N 29/24 (2006.01) G01N 29/26 (2006.01) G01N 29/34 (2006.01)
Patent
CA 2379108
The invention concerns a method and a device for inspecting pipelines, in particular for detecting defects in pipelines by mans of ultrasound. Towards this end, measuring sensors transmit ultrasound signals during passage through a pipeline. The signals reflected on boundary regions of a pipeline wall, e.g. surfaces or defects, are then measured and evaluated. The invention is characterized in that partial regions of the measuring sensors (virtual sensors) formed of a plurality of neighboring sensor elements irradiate ultrasound signals into the pipe wall at at least one radiation angle which is inclined with respect to the normal to the pipe wall and the signals reflected at boundary regions of the pipe wall are received by same and/or other partial regions of the respective measuring sensors, wherein defects in the pipe wall are determined by evaluation of the acoustical signals reflected by different boundary regions.
Hugger Achim
Krieg Wolfgang
Freedman & Associates
Pii Pipetronix Gmbh
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