MAGNETIC AND MAGNETOELASTIC UNIFORMITY MEASUREMENTS ON Fe₇₈Si₇B₁₅ AMORPHOUS RIBBONS

C. Petridis – A. Delatolas – E. Hristoforou

   In this paper we present results on magnetic and magnetoelastic uniformity measurements on Fe₇₈Si₇B₁₅ amorphous ribbons. The measurements are performed using an automatic instrumentation device, with the ability to determine the B(H) and λ(H) functions along the length of a ribbon with parametric control of field and frequency. The device has been calibrated with respect to standard Ni wires. According to these results, it has been determined that magnetic and magnetoelastic uniformity functions are in agreement and they are also subject to the history of the under test samples. These measurements may allow the structural non destructive evaluation on the under test samples in real time, which may be usable in industrial NDT testing and sensing applications.

Keywords: magnetoelasticity, magnetization, uniformity

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