Science Daily November 28, 2018
All materials typically display some variation in their microstructure simply as a result of the manufacturing process, thus providing the potential that Barkhausen noise measurements between nominally similar components will be unique. Researchers at the Los Alamos National Laboratory have demonstrated that Barkhausen noise measurements are both repeatable in time for a single sample made from a ferromagnetic material, and unique across several instances of nominally similar samples. As the method inherently results in a time series measurement at each point on a sample, it is expected to have far higher dimensionality than physically similar eddy current measurement…read more. TECHNICAL ARTICLEÂ