Ultrasonic array reconstruction methods for the localization and the characterization of defects in complex NDT configurations
In this paper, we present ultrasonic array reconstruction techniques aiming at localizing and characterizing flaws in an inspected piece. The proposed algorithms derive from the synthetic focusing approach, which exploits the time-of-flight information. Theoretical forward models implemented in the CIVA software platform are able to provide this information. An advantage is that these models can deal with complex inspection configurations, in particular with complex geometries (irregular surface, for example). The algorithms can be applied to data issued from various operating modes of array inspection. We describe the different algorithms and show examples of their applications for both simulated and measured data.
KeywordsIrregular Surface Sectorial Scanning Hilbert Envelope Time Reversal Technique Classical Reconstruction
Unable to display preview. Download preview PDF.