Low velocity impact and pseudo-ductile behaviour of carbon/glass/epoxy and carbon/glass/PMMA hybrid composite laminates for aircraft application at service temperature |
| |
| Institution: | 1. AMADE, Polytechnic School, University of Girona, Campus Montilivi s/n, 17071 Girona, Spain;2. Aernnova Engineering Solutions Ibérica S.A., Structural Integrity Department, 20 Manoteras Avenue – Building B, 5th Floor, 28050 Madrid, Spain;3. Applus IDIADA, Principal centro técnico, Santa Oliva, E-43710 Tarragona, Spain;4. DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;1. Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424 Kaunas, Lithuania;2. Center for Hydrogen Energy Technologies, Lithuanian Energy Institute, Breslaujos 3, 44403 Kaunas, Lithuania;3. Laboratory of Materials Research and Testing, Lithuanian Energy Institute (LEI), Breslaujos 3, LT-44403 Kaunas, Lithuania;4. Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt;5. Department of Production Engineering and Printing Technology, Akhbar Elyom Academy 6th of October, Egypt |
| |
| Abstract: | Carbon/glass hybrid composite (CGHC) laminates are some of the most promising composites for lightweight applications. Sometimes these laminates are used in warm environment, such as aircraft frame structures, and this may affect their performance. In order to investigate this issue, the present research aims to study the effect of temperatures on the impact behavior and pseudo-ductile behaviour of CGHC in presence of different types of thermosets “epoxy” and thermoplastic “acrylic poly-methyl methacrylate-PMMA”. The experiments were started with making of CGHC laminates from different stacking sequences of unidirectional carbon and woven glass fibre layers, using a vacuum-assisted resin transfer method followed by curing treatment. In addition to CGHC laminates, four other neat batches (Carbon/epoxy, Carbon/PMMA, Glass/epoxy, Glass/PMMA) were prepared for comparison. The low velocity impact behaviour of the fabricated panels was evaluated at high temperatures (60 °C and 80 °C) according to ISO 6603-2 standard, using drop tower, while pseudo-ductile behaviour and ductility index (DI) of the specimens were estimated based on the measured total energy and elastic energy. Also, the low-velocity impact response was modeled mathematically based on a modified energy-balance model to predict the absorbed energies. Finally, the failure mechanisms were examined using optical microscope to determine the influence of these damage growth on DI of the composites under different temperatures. The results showed that the impact energy response of both hybrid composites i.e. epoxy and PMMA was stable even as the temperature rose, however, carbon/glass/PMMA exhibited better performance compared with carbon/glass/epoxy with an increase in impact energy response estimated at 50% (25 °C) and 53% (80 °C). Also, the pseudo-ductile phenomenon was strongly evident, which facilitates the predictablility of failure. |
| |
| Keywords: | Carbon/glass hybrid Hybrid composites Thermoset resin Thermoplastic resin Low velocity impact performance Pseudo-ductile |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
