DTIC ADA269817: Self Organized Criticality and the pdf

DTIC ADA269817: Self Organized Criticality and the

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An investigation of the possibility that the Barkhausen effect in amorphous and polycrystalline ferromagnets is an example of self-organized criticality is described. Since the theory of self-organized criticality was introduced by Bak Tang, and Weisenfeld to explain the behavior of spatially extended, dissipative dynamical systems, the Barkhausen effect is a natural candidate for such a description. The data are consistent with self-organized critical behavior: the power spectral densities depend on frequency f as l/f(a) and the distribution of pulse energies are well described by a power law analogous to the Gutenberg-Richter law for earthquakes. Alternative explanations for power-law dependences are also presented

• Creator/s: Defense Technical Information Center
• Date: 7/1/1993
• Year: 1993
• Book Topics/Themes: DTIC Archive, Cote, Paul J, ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS, *METALS, *PULSES, *FERROMAGNETISM, *MAGNETIZATION, *POLYCRYSTALLINE, FREQUENCY, SPATIAL DISTRIBUTION, DENSITY, POWER, FLICKER, ELECTROMAGNETISM, EARTHQUAKES, NOISE, THEORY, ENERGY, ALLOYS, IRON

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