Aging of a polymer core composite conductor: Mechanical properties and residual stresses |
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| Affiliation: | 1. Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000, Clermont-Ferrand, France;2. Université de Lyon, INSA Lyon, MATEIS, UMR CNRS 5510, 7 avenue Jean Capelle, F-69621, Villeurbanne, France;3. EDF R&D, Materials and Mechanics of Components Department, Chemistry and Materials for Energy Efficiency Group, Avenue des Renardières, F-77818, Moret-sur-Loing, France;4. Université de Lyon, INSA Lyon, CETHIL, UMR CNRS 5008, 9 rue de la Physique, F-69621, Villeurbanne, France;1. Department of Mechanical Engineering, Madhav Institute of Technology and Science, Gwalior 474005, India;2. Department of Mechanical Engineering, Malaviya National Institute of Technology, Jaipur 302017, India;3. Mechanical Engineering, School of Engineering, University of Birmingham, Birmingham B15 2TT, UK;4. Mechanical Engineering, Imperial College London, Exhibition Rd., London SW7 2AZ, UK;1. Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India;2. Department of Chemistry, St. Gregorios College, Kottarakkara, Kollam, Kerala 691 531, India;1. Instituto de Tecnología de Materiales (ITM), Universidad Politècnica de València (UPV), Camino de Vera S/N, 46022 Valencia, Spain;2. Departament d'' Enginyeria Química, Escola Tècnica Superior d''Enginyeria, Universitat de València, Av. de la Universitat, S/n, 46100 Burjassot, Spain;3. School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH – Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden;4. Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, 90112 Songkhla, Thailand;5. Skövde University, SE-541 28 Skövde, Sweden |
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| Abstract: | Polymer core composite conductor specimens were aged in atmospheric conditions at 140 and 180 °C and then tested under four point bending. When aged up to a year at a temperature of 140 °C no detrimental effect on flexural performance of the composite was observed, as opposed to aging at 180 °C, which had a very negative effect on the properties. A finite element model was developed to characterize the residual stress in the composite on a micro scale using representative volume elements (RVE). The residual stresses developed after aging at 140 °C for a year were minimal. However, at temperatures higher than 160 °C significant increases in the stresses were observed. The effect of chemical aging on the failure process of the rods was not considered but could result in the rapid reduction in the loads at failure for the rods tested at 180 °C for up to a year. |
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| Keywords: | B Residual/internal stress D Thermal analysis A PMCs D Mechanical testing |
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