Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics

Real-time assessment of timber-surface crack repair is crucial to the stability and safety timber structures. Epoxy resin was used cracks, active sensing technique using piezoelectric ceramics applied monitor process surface cracks in real time. Sixteen wood samples were designed for axial compression tests monitoring tests. A pair lead zirconate titanate patches pasted on specimens as actuators sensors signal transmission reception, through wavelet packet analysis, variations amplitude, coefficients. The relationship between energy ultimate bearing capacity at different periods after grouting established. Based root-mean-square deviation, damage index, DI, introduced evaluate degree quantitatively. results showed that method can strength development