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TousCoursCNDTretout - Laboratoire de mécanique physique

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LAMB WAVE INSPECTION<br />

C-SCAN: Thick Composite with Teflon Foils and Flat Bottom Holes<br />

CR30US: T300-914 (4.6 mm thick, 32 layers, 220 x 320 mm)<br />

PORTABLE HEAD - ULTRAN 0.5 MHz<br />

10 mm<br />

0.0 6.4 11.6<br />

20.6<br />

ATTENUATION<br />

dB<br />

Problems:<br />

1) No-signal area<br />

Master Science et Technologies CND - 2005<br />

Approfondissements CND par Ultrasons<br />

⇒ minimize separation laser beam/transducer<br />

Ce document est la propriété intellectuelle <strong>de</strong> DASSAULT AVIATION. Il ne peut être utilisé, reproduit, modifié ou communiqué sans son autorisation. DASSAULT AVIATION Proprietary Data.<br />

X < L<br />

2) Double image<br />

Each point is scanned twice: once by receiver and<br />

once by laser beam<br />

⇒ Image Processing<br />

5

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