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Use of 2D Graphene Nanoplatelets (GNP) in cement composites for structural health evaluation
Affiliation:1. Department of Civil, Environmental, and Geo- Engineering, University of Minnesota, Minneapolis, MN 55455, USA;2. Department of Civil & Environmental Engineering, National University of Singapore, 117576 Singapore, Singapore;1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;3. Department of Mechanical Engineering, New York Institute of Technology, New York 11568, USA;4. School of Machinery and Automation, Wuhan University of Science and Technology, Wuhan 430081, China;5. School of Transportation and Logistics, Dalian University of Technology, Dalian 116024, China;1. Department of Engineering, University of Cambridge, Trumpington St, Cambridge, CB2 1PZ, United Kingdom;2. Costain Group Plc., Maidenhead, SL6 4UB, United Kingdom;1. College of Civil Engineering and Architecture, Zhejiang University, 310058, PR China;2. State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, PR China;1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Civil Engineering, Tianjin University, Tianjin 300000, China;3. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;4. Department of Mechanical Engineering, New York Institute of Technology, New York, NY 11568, USA;5. School of Machinery and Automation, Wuhan University of Science and Technology, Wuhan, 430081 China;6. Department of Mechanical and Industrial Engineering, University of Minnesota Duluth, Duluth, MN 55812, USA;1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China;2. Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences, Shanghai 200032, China;3. Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh 15260, USA;1. Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15260, USA;2. Shanghai Research Institute of Building Science, Shanghai 200032, China;3. Department of Electrical and Computer Engineering & Petersen Institute of NanoScience and Engineering, University of Pittsburgh, Pittsburgh, PA 15260, USA
Abstract:This study investigates the use of Graphene Nanoplatelets (GNP) in cement composite to quantify the material damage extent. The damage sensing capability of this new cement composite is demonstrated by experimentally measuring the electric potential across prisms with a known notch depth and comparing it with the finite element simulations. Meanwhile, the damage extent is directly related to the change in electric potential based on a mathematical analogy between the electrostatic field and the elastostatic field under anti-plane shear loading. It is shown that the fractional change in electric potential arising from damage is equivalent to the fractional change in elastic compliance, which can be exploited for structural health evaluation.
Keywords:A  Smart materials  B  Electrical properties  C  Damage mechanics  D  Non-destructive testing
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