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Moiré - Technique
The movements, deformations and vibrations of a model in a wind tunnel can be precisely determined by Moiré Interferometry without disturbing the flow. The technique uses the interference of periodic patterns to measure the topology of a given surface. The advantages of this measuring method are its high accuracy and its high spatial resolution. No installations (like markers) on the object are required, which may influence the flow. As for the measurement only one picture has to be taken, also moving objects can be investigated.The movements, deformations and vibrations of a model in a wind tunnel can be precisely determined by Moiré Interferometry without disturbing the flow. The technique uses the interference of periodic patterns to measure the topology of a given surface. The advantages of this measuring method are its high accuracy and its high spatial resolution. No installations (like markers) on the object are required, which may influence the flow. As for the measurement only one picture has to be taken, also moving objects can be investigated.
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