Quasi-static and high strain rate response of aluminum matrix syntactic foams under compression |
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| Affiliation: | 1. Materials Science and Engineering, Youngstown State University, Youngstown, OH 44555, USA;2. Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Bertalan Lajos utca 7, Budapest 1111, Hungary;3. Civil/Environmental and Chemical Engineering, Youngstown State University, Youngstown, OH 44555, USA;4. MTA–BME Research Group for Composite Science and Technology, Műegyetem rakpart 3, Budapest 1111, Hungary;1. Centre for Mass and Thermal Transport in Engineering Materials, Discipline of Mechanical Engineering, University of Newcastle, Callaghan, NSW 2308, Australia;2. Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R. Boškovića 32, HR-21000 Split, Croatia;3. Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia;1. Department of Mechanical and Aerospace Engineering, North Carolina State University, 911 Oval Drive, Raleigh, NC 27695, USA;2. Department of Structural Engineering, University of California, San Diego, CA 92093, USA;1. Budapest University of Technology and Economics, Faculty of Mechanical Engineering, Department of Materials Science and Engineering, H-1111 Bertalan Lajos Str. 7. MT Building, Budapest, Hungary;2. Szent István University, Faculty of Mechanical Engineering, Institute for Mechanical Engineering Technology, H-2103, Páter Károly u. 1., Gödöllő, Hungary;1. Department of Mechanical and Aerospace Engineering, Polytechnic School of Engineering, New York University, Brooklyn, NY, USA;2. ISIS Sensorial Materials Scientific Centre, University of Bremen, Germany;3. Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM), Bremen, Germany;1. Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Bertalan Lajos utca 7., Budapest 1111, Hungary;2. MTA–BME Research Group for Composite Science and Technology, Műegyetem rakpart 3., Budapest 1111, Hungary |
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| Abstract: | Aluminum alloy matrix syntactic foams were produced by inert gas pressure infiltration. Four different alloys and ceramic hollow spheres were applied as matrix and filler material, respectively. The effects of the chemical composition of the matrix and the different heat-treatments are reported at different strain-rates and in compressive loadings. The higher strain rates were performed in a Split-Hopkinson pressure bar system. The results show that, the characteristic properties of the materials strongly depends on the chemical composition of the matrix and its heat-treatment condition. The compressive strength of the investigated foams showed a limited sensitivity to the strain rate, its effect was more pronounced in the case of the structural stiffness and fracture strain. The failure modes of the foams have explicit differences showing barreling and shearing in the case of quasi-static and high strain rate compression respectively. |
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| Keywords: | A. Foams B. Fracture B. Mechanical properties D. Mechanical testing |
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