Journal
MATERIALS
Volume 12, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/ma12020275
Keywords
metallic glass; stress-impedance; Villari effect; strain sensing
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Funding
- Institute of Metrology and Biomedical Engineering, Warsaw University of Technology
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The SI (stress-impedance) effect in amorphous ribbons with varying magnetostriction was investigated. Iron- and cobalt-based ribbons with different magnetostriction coefficients were put under tensile stress in a dead weight tester and the impedance change was investigated in function of applied stresses. Significant differences of characteristics are presented. Stress-impedance analog of Villari reversal point was observed. The reversal point showed driving current frequency dependence, in which this point manifests for different stress values. Based on the obtained SI characteristics and magnetoelastic hysteresis, the most appropriate stress-sensing material was selected for development of precise small forces sensor.
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