The present work is a comparative study of Acoustic Emission (AE) signals observed during three point bending tests of plain and reinforced concrete beam specimens. AE signals were recorded throughout the tests and analyzed using Wavelet Packet Decomposition (WPD). One…
The present work is a comparative study of Acoustic Emission (AE) signals observed during three point bending tests of plain and reinforced concrete beam specimens. AE signals were recorded throughout the tests and analyzed using Wavelet Packet Decomposition (WPD). One of the objective of current study is to utilize available spectral information of signals for comparative study of AE from reinforced concrete and plain concrete. A classification method for AE signals based on sub-band energy ratios obtained from WPD is proposed. Also, use of relative sub-band energy distribution as a Acoustic emission signature for concrete is proposed. Differences in AE signals of reinforced and plain concrete are highlighted at sub-band level. It is concluded that yielding of reinforcing steel has contributed in higher sub-bands 78.126-250 kHz of AE signals.