[en] Structures for space applications very often suffer stringent mass constraints. Lightweight structures are developed for this purpose, through the use of deployable and/or inflatable beams, and thin-film membranes. Their inherent properties (low mass and small thickness) preclude the use of conventional measurement methods (accelerometers and displacement transducers for example) during on-ground testing. In this context, innovative non-contact measurement methods need to be investigated for these stretched membranes.
The object of the present project is to review existing measurement systems capable of measuring characteristics of membrane space-structures such as: dot-projection videogrammetry (static measurements), stereo-correlation (dynamic and static measurements), fringe projection (wrinkles) and 3D laser scanning vibrometry (dynamic measurements).
Therefore, minimum requirements were given for the study in order to have representative test articles covering a wide range of applications. We present test results obtained with the different methods on our test articles.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Roose, Stéphane ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Stockman, Yvan ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Rochus, Pierre ; Université de Liège - ULiège > CSL (Centre Spatial de Liège) - Instrumentation et expérimentation spatiales
Kuhn, Thomas; Technische Universität München - TUM
Baier, Horst; Technische Universität München - TUM
Casarosa, Gianluca; ESA > ESTEC
Langlois, Stéphane; ESA > ESTEC
Language :
English
Title :
Optical methods for non-contact measurements of membranes
Publication date :
2009
Journal title :
Acta Astronautica
ISSN :
0094-5765
eISSN :
1879-2030
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
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