Acoustic Emission of Growing Microcracks in Vibration-Loaded Material

Details Acoustic Emission of Growing Microcracks in Vibration-Loaded Material Acoustic Emission of Growing Microcracks in Vibration-Loaded Material

2006-11-10

arxiv.org/abs/cond-mat/0611289v1

Physics

Condensed Matter

Materials Science

11 pages, PDF only, 90 Kb

Scientific paper

We propose mechanism describing an acoustic emission by growing microcracks in the material under external cycled load. We use the theoretical approach based on Huygens principle for elastic solid con-tinuum with an account for dislocation creep in the zone of abrasive action. We show that the acoustic emission is anisotropic and its main direction depends not only on the effective length of microcrack but also on dynamics of dislocation structure and on diffusion processes in Kottrell zone which give rise to microcracks.

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