Measurement and quantitative analysis of fiber orientation distribution in long fiber reinforced part by injection molding |
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| Institution: | 1. Nanjing University of Aeronautics and Astronautics, 29 Jiangjun Road, Nanjing, 211100, China;2. Research and Innovation Center, Ford Motor Company, 2101 Village Road, Dearborn, MI 48124-2053, USA;1. KU Leuven, Department of Materials Engineering, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium;2. Technical University of Lodz, Institute of Architecture of Textile, 116 Zeromskiego Street, 90-924 Lodz, Poland;1. Research Center for Applied Mechanics, Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi’an 710071, China;2. Department of Engineering, Lancaster University, Lancaster LA1 4YW, UK;3. Institute for Materials and Processes, School of Engineering, University of Edinburgh, EH9 3FB Edinburgh, UK;1. Université Tunis El Manar, Laboratoire de Génie Civil (LGC), Ecole Nationale d’Ingénieurs de Tunis, BP 37, Le Belvédère, 1002 Tunis, Tunisia;2. Université catholique de Louvain (UCL), IMMC, Bâtiment Euler, 4 Avenue G. Lemaître, B-1348 Louvain-La-Neuve, Belgium |
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| Abstract: | The fiber orientation distribution is one of the important microstructure variables for thermoplastic composites reinforced with discontinuous fibers. In this paper, the long fibers in the injection molded part are measured in detail by micro X-ray CT. A three dimensional (3D) structure of the sample is built and two dimensional images are generated for image analysis. The orientation tensor of fibers is calculated in the flow plane. It shows a symmetric distribution of fibers through the thickness direction, which consists of outer skin, transition zone and the core. The skin layer is so thin that it has only one layer of highly oriented fibers. The core layer also has highly oriented fibers but the direction of fibers is different from that in the skin layer. Nevertheless, the clustering of the fibers is characterized quantitatively in the core. The transition zone can be divided into two subzones by the principal directions of the tensor. |
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| Keywords: | X-ray CT Fiber orientation Injection molding Quantitatively |
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