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Detection and evaluation of the fibers' deposition parameters during wet filament winding

2021; Wiley; Volume: 61; Issue: 5 Linguagem: Inglês

10.1002/pen.25649

1548-2634

Christian Hopmann, Nadine Magura, Nicolas Rozo Lopez, Daniel Schneider, Kai Fischer,

Industrial Vision Systems and Defect Detection

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.