Performance Evaluation of FBG Sensors under Fatigue and Weathering

摘要: Structural health monitoring (SHM) techniques are often used for detecting damage and diagnosing the structural conditions. There many issues related to installation constructability of SHM systems in-situ fibre optic sensors (FOS) on rebars in reinforced concrete (RC) elements. Here, a solution is provided FOS strain sensor by mounting it supplementary bar priori then attaching main reinforcing interest at construction site prior pouring. Such innovative deployment system particularly advantageous developing practical infrastructure. However, performance such under various loading climatic conditions not very well known. The objective this research assess said beams with FRP (fibrereinforced polymer) bars, normal adverse environmental as, immersion cyclic alkaline solution. results show that proposed efficient useful capturing real control, wet dry Electric gauges were found perform poorly Record entire response structure external loads makes possible identify analyze periodic events. It helps better evaluation acquired data. data collected over period time provides valuable information forecasting future behavior estimating risk. In general structures observed objectively only continuous stress cycles can reflect actual characteristics. doi: 10.12783/SHM2015/129