Detection and evaluation of the fibers' deposition parameters during wet filament winding |
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Authors: | Christian Hopmann Nadine Magura Nicolas Rozo Lopez Daniel Schneider Kai Fischer |
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Affiliation: | Institute for Plastics Processing (IKV), RWTH Aachen University, Aachen, Germany |
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Abstract: | Wet filament winding technology has been extensively used for the manufacture of rotationally symmetric parts made of fiber-reinforced plastics (FRP). As the design and modeling of FRP-parts require numerous assumptions, deviations between calculated and achieved mechanical properties are expected. One aspect that contributes to this discrepancy is the assumption of a homogeneous rectangular cross-section of the fiber-band. In this work, the fiber-band geometry in a wet-winding process of carbon fiber cylinders is analyzed. An Infrared-optical system for the detection of the fiber bandwidth and winding-angle is implemented. The influence of the winding speed and the resin temperature is analyzed. An image processing algorithm for the automatic measurement of the fiber's bandwidth and winding-angle is developed. Manual and adaptive gamma corrections are implemented to improve image quality. A parameter study for the suitable selection of image processing parameters is performed. |
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Keywords: | composites imaging orientation processing sensors |
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