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Digital holographic interferometry in the long-wave infrared range for measuring large deformations of space components under thermal-vacuum testing
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1  Centre Spatial de Liège, STAR Research Unit, Université de Liège

Abstract:

Holographic interferometry at around 10 µm wavelengths has many advantages. It offers the possibility of large deformation measurement, while being much less sensitive to external perturbations. We present the state-of-the art of this technique applied to several industrial cases of the space industry. In particular, we demonstrate that the technique is well adapted to measurement of full-field deformation maps of space structures undergoing large temperature variations typical to what they experience in space conditions.

Keywords: digital holography; long-wave infrared; space testing
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