Gazda Piotr, Nowicki Michał, Szewczyk Roman
Warsaw University of Technology, Institute of Metrology and Biomedical Engineering, 02-525 Warsaw, Poland.
Materials (Basel). 2019 Jan 16;12(2):275. doi: 10.3390/ma12020275.
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.
研究了具有不同磁致伸缩的非晶带材中的SI(应力-阻抗)效应。将具有不同磁致伸缩系数的铁基和钴基带材置于静重试验机中承受拉伸应力,并研究阻抗变化与施加应力的函数关系。给出了特性上的显著差异。观察到了Villari反转点的应力-阻抗类似物。反转点表现出驱动电流频率依赖性,其中该点在不同应力值下表现不同。基于所获得的SI特性和磁弹性滞后,选择了最合适的应力传感材料来开发精确的小力传感器。
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