Fiber-reinforced composites for structural health monitoring

Abstract

The authors have been studying the strain sensitive materials which are based on conductivity change resulting from structural change in percolation system. In this study, we have developed a maximum strain memory sensor, which enables to detect damage to structures easily even after a large earthquake. To confirm the performance as the sensor, tensile tests embedded into concrete specimen have been conducted. As a result, it is discovered that this sensor is sufficiently effective to diagnose cracks in the concrete structure.

Self-sensing and strengthening effects of reinforced concrete structures with near-surfaced mounted smart basalt fibre–reinforced polymer bars

“…Yang et al 5 used the electrical properties of carbon fibre-reinforced polymer (CFRP) to monitor the damage of the CFRP and strengthened structure. Kumagai et al 6 mixed the carbon particles into the resin and made a smart glass fibre-reinforced polymer (GFRP) rod, which was embedded into the concrete specimen to implement structural monitoring. Qiu et al 7 embedded shape memory alloy (SMA) wires into composite plates to monitor the strain.…”