Evaluation of sandwich panels with various polyurethane foam-cores and ribs |
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| Affiliation: | 1. Department of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology, USA;2. School of Civil Engineering and Environmental Science, The University of Oklahoma, USA;3. Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, USA;4. Engineering Education Center, Missouri University of Science and Technology, USA;1. Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, China;2. Engineering Research Center of Green Dyeing and Finishing in Fujian Provincial University, Fuzhou, Fujian 350108, China;3. Graduate Institute of Biotechnology and Biomedical Engineering, Central Taiwan University of Science and Technology, Taichung City 40601, Taiwan;4. School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;5. College of Textile and Garment, Hebei University of Science and Technology, Shijiazhuang 050018, China;6. Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;7. Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung 40402, Taiwan;8. Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan;9. School of Chinese Medicine, China Medical University, Taichung City 40402, Taiwan;10. Department of Fashion Design, Asia University, Taichung City 41354, Taiwan;1. ISISE, Dep. Civil Eng., School Eng., University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal;2. Minho University, Department of Civil Engineering, Campus de Azurém, 4800-058 Guimarães, Portugal;1. School of Mechanical Engineering College of Engineering, University of Tehran, Tehran, 14399-57131, Iran;2. School of Mechanical Engineering College of Engineering, University of Tehran, Tehran, 14399-57131, Iran |
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| Abstract: | The objective of this study was to evaluate three potential core alternatives for glass fiber reinforced polymer (GFRP) foam-core sandwich panels. The proposed system could reduce the initial production costs and the manufacturing difficulties while improving the system performance. Three different polyurethane foam configurations were considered for the inner core, and the most suitable system was recommended for further prototyping. These configurations consisted of high-density polyurethane foam (Type 1), a bidirectional gridwork of thin, interconnecting, GFRP webs that is in-filled with low-density polyurethane foam (Type 2), and trapezoidal-shaped, low-density polyurethane foam utilizing GFRP web layers (Type 3). The facings of the three cores consisted of three plies of bidirectional E-glass woven fabric within a compatible polyurethane resin. Several types of small-scale experimental investigations were conducted. The results from this study indicated that the Types 1 and 2 cores were very weak and flexible making their implementation in bridge deck panels less practical. The Type 3 core possessed a higher strength and stiffness than the other two types. Therefore, this type is recommended for the proposed sandwich system to serve as a candidate for further development. Additionally, a finite element model (FEM) was developed using software package ABAQUS for the Type 3 system to further investigate its structural behavior. This model was successfully compared to experimental data indicating its suitability for parametric analysis of panels and their design. |
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| Keywords: | A Foams A Glass fibres C Finite element analysis (FEA) C Analytical modeling |
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