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The compressive responses of glass fiber composite pyramidal truss cores sandwich panel at different temperatures
Affiliation:1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics (HUST), Wuhan 430074, PR China;3. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai 200240, PR China;4. Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, PR China;1. Materials and Textile Engineering College, Jiaxing University, Jiaxing 314001, Zhejiang Province, China;2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;1. Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. Department of Mechanical Engineering, The University of Utah, Salt Lake City, UT 84112, USA;1. School of Mechatronics Engineering, 1600 Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan, Chungnam, 31253, Republic of Korea;2. School of Mechanical Engineering, Korea University of Technology and Education, 1600 Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan, Chungnam, 31253, Republic of Korea;1. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, People''s Republic of China;2. College of Textiles, Donghua University, Shanghai 201620, People''s Republic of China;3. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, People''s Republic of China;4. Department of Mechanical Engineering, University of New Orleans, New Orleans, LA 70148, USA;1. Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579, Japan;2. Department of Mechanical Systems Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-shi, Toyama 939-0398, Japan
Abstract:A new method for fabricating glass fiber composite sandwich panel with pyramidal truss cores was developed based on the vacuum assisted resin transfer molding technology. The microstructure and organizations of fabricated sandwich panels were examined by the scanning electron microscope. The out-of-plane compressive tests of composite sandwich panels were performed throughout the temperature range from ?60 °C to 125 °C. Then the effects of temperature on the compressive strength, compressive modulus and failure mechanism were investigated and analyzed. Our results indicated that cryogenic temperature resulted in the increasing of the compressive modulus and strength, while high temperature caused the degradation of the compressive modulus and strength. The effect of temperature on failure mode of composite sandwich panel was also observed. Analytical expressions were presented to predict the compressive modulus and strength of composite sandwich panels at different temperatures.
Keywords:A  Glass fibers  B  High-temperature properties  B  Mechanical properties  E  Resin transfer molding
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