The compressive response of new composite truss cores |
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| Authors: | Byung-Chul Lee Ki-Won Lee Joon-Hyung Byun Ki-Ju Kang |
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| Affiliation: | 1. School of Mechanical Systems Engineering, Chonnam National University, Republic of Korea;2. Korea Institute of Materials Science, Republic of Korea;1. Department of Materials Science and Engineering, 395 McCormick Road, PO Box 400745, University of Virginia, Charlottesville, VA 22904-4745, United States;2. Engineering Department, University of Cambridge, Cambridge, UK;1. Research Institute for Materials Science and Technology (INTEMA), Universidad Nacional de Mar del Plata, CONICET, Av. Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina;2. Institute of Lightweight Structures, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, 85577 Neubiberg, Germany;1. KTH, Department of Aeronautical and Vehicle Engineering, Stockholm, Sweden;2. Transilvania University of Brasov, Department of Mechanical Engineering, Romania;3. University of Cambridge, Department of Engineering, Cambridge, United Kingdom;1. School of Materials Science & Engineering, Beihang University, Beijing 100191, China;2. School of Transportation Science & Engineering, Beihang University, Beijing 100191, China;3. Advanced Vehicle Research Center, Beihang University, Beijing 100191, China;4. International Research Centre for Advanced Structural & Biomaterials, Beihang University, Beijing 100191, China;5. Department of Materials Science & Engineering, University of California, Berkeley, CA 94720, USA;1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai 200240, PR China;3. Hudong-Zhonghua Shipbuilding (Group) Co., Ltd, Shanghai 200129, PR China |
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| Abstract: | New approaches for fabricating truss cellular cores using pultruded unidirectional fiber-reinforced composite rods and yarns are described. Based on the performance and observed failure mechanism of two initial ideas, a final design named “semi-wire-woven bulk Kagome” (semi-WBK) core is developed. Under compressive load, three types of semi-WBK core specimens (which differ in the type and the amount of adhesive bond used) failed, mainly by premature collapse at the ends of the pultruded rods (defibration). In terms of strength, equivalent Young’s modulus, and density, the semi-WBK cores showed performance comparable to honeycomb cores and pyramidal CFRP lattices. |
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