ORBi: Michel Fabrice - Non destructive testing by digital shearography using a Savart plate

Reference : Non destructive testing by digital shearography using a Savart plate


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/96931

Title :	Non destructive testing by digital shearography using a Savart plate
Language :	English
Author, co-author :	Michel, Fabrice [Université de Liège - ULg > Département de physique > HOLOLAB > Doct. sc. (physique - Bologne) >]
	Blain, Pascal [Université de Liège - ULg > Département de physique > Optique - Hololab >]
	Renotte, Yvon [Université de Liège - ULg > Département de physique > HOLOLAB > >]
	Habraken, Serge [Université de Liège - ULg > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège) >]
Publication date :	2009
On invitation :	No
Audience :	International
Event name :	Photonics North 2009
Event date :	May 24-27,2009
Event organizer :	SPIE
Event place (city) :	Quebec
Event country :	Canada
Keywords :	[en] shearography ; savart ; non destructive testing
Abstract :	[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.
Research units :	Service de Physique Générale, Hololab
Funders :	Région wallonne : Direction générale des Technologies, de la Recherche et de l'Energie - DGTRE
Name of the research project :	MINT
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/96931

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