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METHOD FOR DETERMINING THE ORIENTATION OF FIBERS OF A NONWOVEN FABRIC AND FIBER ORIENTATION MEASURING DEVICE
METHOD FOR DETERMINING THE ORIENTATION OF FIBERS OF A NONWOVEN FABRIC AND FIBER ORIENTATION MEASURING DEVICE
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机译:确定非织造织物纤维方向的方法和纤维取向测量装置
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摘要
The invention relates to a method for determining an orientation of fibers (70) or fiber sections (50.i) of a fleece (20), with the following steps: (a) irradiating the fleece (20) with polarized light (14), whose polarization ( P) changes as a function of time, (b) determining a spatially resolved, time-dependent polarization (P 18 (t)) of light (18) that has interacted with the fleece, so that polarization data are obtained, and (c) calculating the spatially resolved orientation (O (x, y) ), in particular the Mueller matrix (M), from the polarization data.
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