Reference : Non destructive testing by digital shearography using a Savart plate
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/96931
Non destructive testing by digital shearography using a Savart plate
English
Michel, Fabrice mailto [Université de Liège - ULg > Département de physique > HOLOLAB > Doct. sc. (physique - Bologne) >]
Blain, Pascal mailto [Université de Liège - ULg > Département de physique > Optique - Hololab >]
Renotte, Yvon mailto [Université de Liège - ULg > Département de physique > HOLOLAB > >]
Habraken, Serge mailto [Université de Liège - ULg > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège) >]
2009
No
No
International
Photonics North 2009
May 24-27,2009
SPIE
Quebec
Canada
[en] shearography ; savart ; non destructive testing
[en] Shearography is a growing optical technique in the field of non-destructive testing (NDT). Hololab developed an out of plane, in line and almost common path interferometer based on polarization states separation using a coated prism for digital phase-shifting shearography. This setup is efficient but does not allow varying the shearing direction, that is an important parameter for defects detection and quantification. To overcome this disadvantage, the coated prism is substituted by a Savart plate device that allows scanning several shearing directions by rotating the device around the light propagation axis. Many advantages of the prism substitution are discussed. The behaviour of the Savart plate as a shearing device is experimentally analyzed to optimize its integration within the interferometer. Recorded phasemaps in NDT for different shearing directions are presented.
Service de Physique Générale, Hololab
Région wallonne : Direction générale des Technologies, de la Recherche et de l'Energie - DGTRE
MINT
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/96931

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