| Issue |
J. Phys. Colloques
Volume 48, Number C8, Décembre 1987
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C8-407 - C8-412 | |
| DOI | https://doi.org/10.1051/jphyscol:1987861 | |
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 48 (1987) C8-407-C8-412
DOI: 10.1051/jphyscol:1987861
1 Institute of Physics, Technical University of Gdansk, PL-80-952 Gdansk, PL-80-952Gdansk, Poland
2 Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, LA 341, INSA de Lyon, Bât. 502, F-69621 Villeurbanne Cedex, France
J. Phys. Colloques 48 (1987) C8-407-C8-412
DOI: 10.1051/jphyscol:1987861
RELATION BETWEEN MECHANICAL BARKHAUSEN NOISE AND MAGNETOMECHANICAL INTERNAL FRICTION
B. AUGUSTYNIAK1 et A. VANNES21 Institute of Physics, Technical University of Gdansk, PL-80-952 Gdansk, PL-80-952Gdansk, Poland
2 Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, LA 341, INSA de Lyon, Bât. 502, F-69621 Villeurbanne Cedex, France
Abstract
The mechanical Barkhausen noise (MBN) induced by torsional
vibration (80 Hz) was measured for Copt alloy. The shear strain hysteresis loop
and the frequency spectrum were analyzed. The amplitude dependence of MBN was
discussed and compared with the amplitude dependence of magnetomechanical
damping. The maximal intensity of the MBN was found at the shear strain value
equal to vibration amplitudes at which the internal friction maximum appears.
At the high strain values additionally the stress induced magnetical Barkhausen
noise was detected.