Damage assessed by wavelet scale bands and b-value in dynamical tests of a reinforced concrete slab monitored with acoustic emission
The Continuous Wavelet Transform was applied to acoustic emission signals from dynamic tests conducted on a reinforced concrete slab with a shaking table. The Cumulative Acoustic Emission Energy was compared with the Cumulative Dissipated Energy of the tested structure. The (4564kHz) frequency band was assigned to cracking of concrete through the evolution of maximum values of CWT coefficients. The evolution of the b-value in the successive seismic simulations revealed the inception of loss of bond between reinforcing steel and surrounding concrete.
damage b-value reinforced concrete continuous wavelet transform acoustic emission signals