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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


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