The correlation between A and D in the AE signals coming from deformation tests in steel samples and explosion tests in Zry tubes is analysed. The graph for the logarithm of relative Amplitude versus Duration of AE signals is a band between two slightly convex lines. If each burst is a simple event a unique straight line is expected. Following a previous model of our Group, bursts were modelled as superposition of a number of events.
Magneto Acoustic Emission, which is Barkhausen Noise (BN) and Acoustic Emission (AE), depends on microstructure and existing residual stresses in magnetic materials. Preliminary results obtained by magnetization along two perpendicular directions on a metal glass foil are presented. Signals were analyzed with Statistic, Fast Fourier and Wavelet methods. Results are part of a
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