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NDT.net Issue - 2017-12 - NEWS

PAUT of the Fir-Tree Roots of the Turbine Blades without Demounting Out of the Turbine Disk


Sonotron NDT58, Rehovot [Israel]
NEWS  
NDT.net Journal
Issue: 2017-12
The coverage of the full body of the root involves compression and shear wave insonifications depending on the region of interest (ROI). The miniature PA probes connected to the portable PA instrument of ISONIC series (ISONIC 3510, 2010, 2009 UPA Scope) are applied to the ROI’s corresponding surface of the blade. The DAC normalized clear imaging is provided for the root geometry echoes and crack’s signals allowing easy template based distinguishing between the healthy and affected areas. The typical images and the inspection process inside the turbine case are illustrated by the video below:

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