Penetration impact testing of self-reinforced composites |
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| Affiliation: | 1. Scientific Computing Laboratory, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, Zemun 11080, Belgrade, Serbia;2. Faculty of Engineering, University of Novi Sad, Trg D. Obradovića 6, Novi Sad 21000, Serbia;1. Institute for Construction Sciences Eduardo Torroja, CSIC, Serrano Galvache 4, 28033 Madrid, Spain;1. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 bus 2450, Belgium;2. Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106, USA;3. Materials Department, University of California, Santa Barbara, CA 93106, USA;4. School of Engineering, University of Aberdeen, King’s College, Aberdeen AB24 3UE, Scotland, UK;1. AMADE, Polytechnic School, Universitat de Girona, Campus Montilivi s/n, 17071 Girona, Spain;2. Mechanical Design and Production Dept., Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Sharkia, Egypt |
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| Abstract: | Penetration impact resistance is one of the key advantages of self-reinforced composites. This is typically measured using the same setup as for brittle fibre composites. However, issues with the test configuration for falling weight impact tests are reported. Similar issues have been found in literature for other composites incorporating ductile fibres. If the dimensions of the test samples are too small relative to the clamping device, then the test samples can heavily deform by wrinkling and necking. These unwanted mechanisms should be avoided as they absorb additional energy compared to properly tested samples. Furthermore, these mechanisms are found to occur more easily at lower compaction temperatures due to the lower interlayer bonding. In conclusions, the sample dimensions of ductile fibre composites should be carefully selected for penetration impact testing. If wrinkling or necking is observed, then the sample dimensions need to be increased. |
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| Keywords: | A. Polymer (textile) fibre B. Impact behaviour D. Mechanical testing Self-reinforced composites |
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