Tensile and compressive properties of chopped carbon fiber tapes reinforced thermoplastics with different fiber lengths and molding pressures |
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| Affiliation: | 1. Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, QC, Canada H3A 0C3;2. National Research Council Canada, 5145 Decelles Avenue, Montreal, QC, Canada H3T 2B2;1. Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA;2. Institute of Advanced Steels and Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;4. Research and Advanced Engineering, Ford Motor Company, Dearborn, MI 48124, USA;1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore;3. Research and Innovation Center, Ford Motor Company, Dearborn, MI 48124, USA;4. Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA;5. College of Engineering and Computer Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA;1. meComposites, Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK;2. Department of Industrial and Materials Science, Chalmers University of Technology, SE-41296 Gothenburg, Sweden;3. Oxeon AB, Boras, Sweden |
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| Abstract: | Tensile and compressive behaviors of chopped carbon fiber tapes reinforced thermoplastics have been investigated by varying compression molding conditions (to study the effect of the molding pressure) and the tape length (to analyze the fiber length effect on the mechanical properties of produced composites). Fractographic analysis of prepared specimens conducted after the experiments indicated that the obtained modulus values were almost independent of both the tape length and molding pressure, while the measured strengths exhibited high molding pressure sensitivity. Interlaminar shear strength was considered to be the dominate factor in damage determination during tensile testing, while interlaminar tensile strength played the main role in compression fracture. Increase in the tape length led to a slight increase in the strength magnitude, but also a significant increase in the standard deviation of strength due to the decrease in structural regularity. |
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| Keywords: | A Discontinuous reinforcement A Polymer-matrix composites (PMCs) B Mechanical properties E Compression molding |
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