Flexural and impact response of woven glass fiber fabric/polypropylene composites |
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| Affiliation: | 1. Institute of Chemistry and Technology of Polymers, National Council of Research, Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy;2. Department of Chemical, and Materials Engineering and Industrial Production, University of Naples Federico II, P.le V. Tecchio 80, 80125 Naples, Italy;3. Institute of Composite and Biomedical Materials, National Council of Research, P.le E. Fermi 1, 80055 Portici, Naples, Italy;1. School of Mechanical and Chemical Engineering, University of Western Australia, Australia;2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;3. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, PR China;1. School of Mechanical Engineering, KIIT, Deemed to be University, Bhubaneswar - 751024, Odisha, India;2. Department of Materials and Metallurgical Engineering, Maulana Azad National Institute of Technology, Bhopal - 462003, India;1. Swinburne University of Technology, Faculty of Science, Engineering and Technology, Hawthorn, Melbourne, VIC 3122, Australia;2. School of Astronautics, Harbin Institute of Technology, Harbin, China;3. Department of Mechanical Engineering, University of New Orleans, New Orleans, LA 70148, USA;1. Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran;2. Department of Mechanical Engineering, Arak University of Technology, Arak 38181-41167, Iran;1. Technion - Israel Institute of Technology, Materials Mechanics Centre, Technion City, 32000 Haifa, Israel;2. Bristol Composites Institute, University of Bristol, Queen''s Building, Bristol BS8 1TR, United Kingdom;3. University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom;4. Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary;1. King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, COHMAS Laboratory, Thuwal 23955-6900, Saudi Arabia;2. Mechanical Design and Production Department, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Sharkia, Egypt;3. Engineering Management Department, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia |
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| Abstract: | Impact tests with a falling dart and flexural measurements were carried out on polypropylene based laminates reinforced with glass fibers fabrics. Research has shown that the strong fiber/matrix interface obtained through the use of a compatibilizer increased the mechanical performance of such composite systems. The improved adhesion between fibers and matrix weakly affects the flexural modulus but strongly influences the ultimate properties of the investigated woven fabric composites. In fact, bending tests have shown a clear improvement in the flexural strength for the compatibilized systems, in particular when a high viscosity/high crystallinity polypropylene was used. On the contrary, the low velocity impact tests indicated an opposite dependence on the interface strength, and higher energy absorption in not compatibilized composites was detected. This result has been explained in terms of failure mechanisms at the fiber/matrix interface, which are able to dissipate large amounts of energy through friction phenomena. Pull-out of fibers from the polypropylene matrices have been evidenced by the morphological analysis of fracture surfaces after failure and takes place before the fibers breakage, as confirmed by the evaluation of the ductility index. |
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| Keywords: | A Polymer–matrix composites A Laminates A Glass fibers B Impact behavior B Mechanical properties |
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