The performance of stress-sensing smart fiber reinforced composites in moist and sodium chloride environments |
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| Affiliation: | 1. Department of Civil Engineering and Mechanics, University of Wisconsin-Milwaukee, USA;2. Department of Civil & Environmental Engineering, North Dakota State University, USA;3. Institute of Construction Materials, TU Dresden, Dresden, Germany;1. School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an, Shanxi, China;2. Centre for Innovative Structures and Materials, School of Civil, Environmental and Chemical Engineering, RMIT University, GPO Box 2476, Melbourne 3001, Australia;1. College of Material Science and Engineering, Wuhan University of Technology, 430070 Wuhan, PR China;2. Key Laboratory of Marine New Materials and Related Technology, Zhejiang Key Laboratory of Marine Materials and Protection Technology, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China;1. Department of Civil Engineering, Wuhan University, Wuhan, China;2. Department of Engineering, Lancaster University, Lancaster LA1 4YR, UK;3. School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK;1. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;2. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China;3. Department of Mechanical Engineering, New York Institute of Technology, New York, NY 11568, USA;1. Department of Aerospace Engineering, Texas A&M University, 3409 TAMU College Station, TX 77843-3409, USA;2. Department of Material Science and Engineering, Texas A&M University, 3003 TAMU College Station, TX 77843-3003, USA |
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| Abstract: | The addition of carbon nano-fibers (CNF) to fiber reinforced composites (FRC) based on polyvinyl alcohol fibers can improve the flexural strength of composites. Depending on applied stress, moisture content, and exposure to chloride solutions, the developed CNF composites exhibit specific levels of electrical conductivity. Reported research has demonstrated a strong dependency of electrical response of composite to crack formation in moist and NaCl environments. It was demonstrated that the sensitivity to strain and chloride solution can be enhanced by CNF. The developed technology and smart composite material are scalable for application in nondestructive monitoring of concrete structures that require improved integrity under service loads and stability in harsh environments. |
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| Keywords: | A. Carbon fiber A. Polymer fiber A. Nano-structures A. Smart materials B. Electrical properties |
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