Abstract
In order to identify the mechanical behaviour of transparent plastic films constituting pressurised balloons developed by the CNES, an experimental study has been completed with non-contact measurement using a stereo correlation method. The two CCD cameras enable numerical image acquisition with a 1280×1024 pixel definition. These images are then processed by ARAMIS software (GOM GmbH). This system is able to measure displacement and strains on the surface of an object with a resolution of 2000 μm/m for strains and 15 μm for displacements after the calibration phase. The feasibility of non-contact measurement by stereo correlation is demonstrated on both transparent materials and in the conditions imposed by the Nirvana experimental platform, developed by ONERA.
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