Monitoring Stress State of H-Shape Steel Using Ceramic Piezoelectric Sensor: A Feasibility Study

To monitor the stress state and yield capacity of H-beams across their entire service process, a real-time monitoring method based on energy signal response ceramic piezoelectric sensors is proposed in this paper. The applied to conduct loading experiments under different load values web heights. Then, amplitude signals two working conditions are compared analyzed, finite element analysis results verified. experimental show that time-domain waveform index increases an increase height or load. Taking H-section steel member with 10 cm as example, when value less than 500 kN/m, (on average) by ~10.5% for every 100 kN/m increase; exceeds below 675 (yield load), same ~13.4%. Meanwhile, 1 average ~14.6%. simulation indicate sensor external up yielding Because at location directly determines wave propagation, critical buckling loads can be predicted using index.