Abstract
Structural health monitoring of concrete infrastructures has attracted enormous attention due to the brittle nature of concrete. In this research, we report the carbon fibre/silicon rubber composite sensors and their excellent monitoring in concrete’s compression. It is shown that the electric resistance change synchronously with the mechanical deformation of concrete during the compression process. With the increase of carbon fibre fraction, the sensitivity decreases and the numerical equations to predict the structural change are also obtained. The experimental results reported here highlight the potential application of CF/silicon composites as an effective, real-time structural monitoring sensor with low-cost and long life.
Highlights
Structural health monitoring (SHM) and damage detection tools have been urgently needed for civil infrastructures/systems due to the increased awareness of economic and social effects of deterioration resulting from the coupling effect of long-term, fatigue and mutation [1,2,3]
Carbon fibre/silicon rubber composites as structural health monitoring sensors were studied in our group and it has been proved that the composites have stable electric resistance-time characteristic, wide working temperature range and large deformation [11]
The electrical property of carbon fibres (CF)/silicon rubber composites is firstly studied before the sensing performance
Summary
Structural health monitoring (SHM) and damage detection tools have been urgently needed for civil infrastructures/systems due to the increased awareness of economic and social effects of deterioration resulting from the coupling effect of long-term, fatigue and mutation [1,2,3]. Composites with carbon fibers as dopants have been intensely studied due to their excellent electric and mechanical properties. Carbon fibre/silicon rubber composites as structural health monitoring sensors were studied in our group and it has been proved that the composites have stable electric resistance-time characteristic, wide working temperature range and large deformation [11]. The sensitivity tests of composites were characterized by the real-time combination of mechanical and electronic performance.
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