Reference : Space mirror deformation: from thermo- mechanical measurements by speckle interferome...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/227113
Space mirror deformation: from thermo- mechanical measurements by speckle interferometry to optical comparison with multiphysics simulation
English
Languy, Fabian mailto [Université de Liège - ULiège > > CSL (Centre Spatial de Liège) >]
Vandenrijt, Jean-François mailto [Université de Liège - ULiège > > CSL (Centre Spatial de Liège) >]
Saint-Georges, Philippe mailto [Open Engineering > > > >]
Paquay, Stéphane mailto [Open Engineering > > > >]
De Vincenzo, Pascal mailto [Open Engeneering > > > >]
Georges, Marc mailto [Université de Liège - ULiège > > CSL (Centre Spatial de Liège) >]
17-Aug-2018
Applied Optics
Optical Society of America
57
24
6982
Yes (verified by ORBi)
International
1559-128X
2155-3165
United States
[en] Speckle interferometr ; Metrology ; Optical Engeneering
[en] Experimental testing of space optics is a mandatory process for investigating the optical performances in conditions close to reality. With the optical requirement level increasing over years, these experimental tests are increasingly expensive and time-consuming. A modeling tool would therefore be an elegant solution to avoid these drawbacks. For this purpose, a multiphysics approach has been used to predict how optics behave under thermal loads. In this paper, experimental surface deformations of a space mirror perturbed by thermal gradients are compared to multiphysics simulation results. The local displacements of the mirror surface have been measured by use of electronic speckle pattern interferometry, and the deformation itself has been calculated by subtracting the rigid body motion. After validation of the thermo-mechanical solution, experimental and numerical wavefront errors are compared.
Centre Spatial de Liège - CSL
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
Socoev
Researchers ; Professionals
http://hdl.handle.net/2268/227113
10.1364/AO.57.006982
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-57-24-6982

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
ao-57-24-6982.pdfPublisher postprint1.84 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.