Mechanical Stress Dependence of the Switching Field in Amorphous Microwires

Simulated hysteresis loop of a bent Fe-rich glass-covered wire

“…On the contrary to the literature cited above, Ref. [13] concerns a direct application of glass-covered Fe-rich microwires as bending sensors. The wires diameter here varies from 1 to 40 µm.…”

“…As a rule, the stresses applied are either tensile or torsional; these kinds of stresses come also from the glass covers and from the fabrication process, as it has been discussed by several authors [8,9]. On the contrary, the role of bending stresses has been largely ignored, with [10,11,12,13] as rare exceptions. Yet, bending is known to strongly modify internal distribution of stresses [10], and therefore the radius of curvature of a wire is a convenient parameter to control its magnetic properties.…”

The Design and Production of a Suitable Carrier for Microwires Used for Non-Contact Detection of Mechanical Strains

“…They are produced by a method of rapid cooling of the melt while drawing [25]. Due to positive magnetostriction, these microwires are suitable for measuring temperature and deformation fields [26][27][28][29]. The sensitivity, reliability, and applicability of microwire sensors result from evaluation of the influences of several factors, which are (1) the dimensions and chemical composition of the microwire; (2) the material properties, shape, and dimensions of the microwire carrier; (3) the stress range; and (4) the method of installing the sensor on the surface of the structural member.…”

Novel Applications of Bistable Magnetic Microwires

“…The switching field is very sensitive to many external parameters like temperature, magnetic field, frequency or * corresponding author; e-mail: sabol@rvmagnetics.com mechanical stresses, which can be successfully employed in construction of miniaturized sensors having few advantages in comparison to the currently employed sensors [2].…”