Carbon and glass-fibre reinforced polymer matrix composites exhibit superior properties to traditional materials. Thus, they have found a broad variety of applications in aeronautic industry especially for weight reduction and high fatigue resistance applications. For process development and quality control sophisticated three-dimensional methods for non-destructive characterization are needed. X-ray computed tomography (CT) is a powerful 3-dimensional radiographic non destructive-testing method which fulfills most of the requirements. This paper comprises the qualitative and quantitative characterization of short glass-fibre reinforced polymeric parts by micro-CT to measure fibre orientation distribution and fibre length distribution. The CT-data were processed by 5 major steps: smoothing/pre-processing, segmentation, skeletonization, fibre extraction and tensor calculation. The final results of the CT-evaluation procedure are a three-dimensional representation and visualization of the fibre distribution by means of color coded vector-fields and glyphs and in addition the second-order orientation tensor. In addition, the experimental CT-results were compared to simulation results of the injection moulding process using Moldflow. Both 3D-visualisation and orientation tensor reveal a good correspondence.
High resolution X-ray computed tomography for qualitative and quantitative characterisation of fibre reinforced polymers
Hochauflösende Röntgen-Computertomographie für qualitative und quantitative Charakterisierung faserverstärkter Kunststoffe
2008
7 Seiten, 4 Bilder, 3 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
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