Direct correlation between strengthening mechanisms and electrical noise   in strained copper wires
  We have measured the resistance noise of copper metallic wires during a tensile stress. The time variation of the main resistance is continuous up to the wire breakdown, but its fluctuations reveal the intermittent and heterogeneous character of plastic flow. We show in particular direct correlations between strengthening mechanisms and noise spectra characteristics. 
Natalia Bellido, Alain Pautrat, Clement Keller and Eric Hug
cond-mat.mtrl-sci