Damage Mechanisms Interpreted by Acoustic Emission Signal Analysis
Acoustic emissions (AE) are ultrasonic waves generated by the rapid release of energy from discontinuities or cracks spreading in materials subject to a stress and strain field. By identifying the complete shape of the signals and taking into account a larger quantity of data, it becomes possible to ascertain the three-dimensional location of damage sources from AE sensor records. In this connection, the authors have fine-tuned an original procedure that uses seismic analysis techniques, such as the moment-tensor solution. The experimental program consisted of tests conducted in situ on masonry walls of historical buildings.
L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz
A. Carpinteri et al., "Damage Mechanisms Interpreted by Acoustic Emission Signal Analysis", Key Engineering Materials, Vol. 347, pp. 577-582, 2007