Embedded ferromagnetic microwires for monitoring tensile stress in polymeric materials

Makhnovskiy, D. P.; Zamorovskii, Vlad; Summerscales, John

doi:10.1016/j.compositesa.2014.03.006

Cited by 27 publications

(12 citation statements)

References 32 publications

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“…The magnetisation curves for wires with negative magnetostriction of the composition Co 68 Fe 4 Cr 3 Si 11 B 14 are shown in Figure 17.1 (Makhnovskiy et al, 2014). The loops were measured by a standard inductive method for a wire 5 cm long.…”

Section: Electrophysical Properties Of Magnetic Microwiresmentioning

confidence: 99%

“…The plots of the microwire impedance versus applied tensile force F are shown in Figure 17.9 (Makhnovskiy et al, 2014) for the excitation frequency 40 MHz and at the different axial bias magnetic fields H ex induced by the short solenoid. If no bias field is applied, the impedance demonstrates irregular stress sensitivity with relatively small deflections from the mean.…”

Section: Application Of Stress MI For Composite Testingmentioning

confidence: 99%

“…Force-strain characteristic of the epoxy sample and its physical dimensions(Makhnovskiy et al, 2014). Young's modulus E of the sample measured at the origin was $2.5 GPa.…”

mentioning

confidence: 99%

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Magnetic microwires in microwave applications

Panina

Makhnovskiy

2015

Magnetic Nano- And Microwires

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Section: Electrophysical Properties Of Magnetic Microwiresmentioning

confidence: 99%

Section: Application Of Stress MI For Composite Testingmentioning

confidence: 99%

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Magnetic microwires in microwave applications

Panina

Makhnovskiy

2015

Magnetic Nano- And Microwires

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“…The additional contribution to the anisotropy before annealing comes from magnetoelastic interactions. In glass-coated amorphous wires the internal stress originated from quenching and drawing processes is predominantly tensile and directed along the wire [15][16][17][18].…”

Section: Analysis Of Induced Anisotropiesmentioning

confidence: 99%

“…The induced helical anisotropy not only increases the relative change in impedance (MI ratio) up to 200% (from 10% in as-prepared state) in the lowfield region, but makes it possible to realize highly stresssensitive MI. This has a potential for applications in miniature stress sensors, in particular, for embedded sensing techniques [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Stress Effects on Magnetic Properties of Amorphous Microwires Subjected to Current Annealing

et al. 2018

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Abstract. Effects of current annealing on magnetic hysteresis properties and magnetoimpedance (MI) of glass-coated amorphous microwires with nominal composition of Co71Fe5B11Si10Cr3 and small positive magnetostriction were investigated with the purpose to control the magnetic anisotropy. We have demonstrated that current annealing can produce a controllable change in the easy anisotropy direction from almost axial to circular, depending on the annealing time. The induced magnetization configuration is very sensitive to the applied tensile stress. The combination of positive magnetostriction and helical anisotropy makes it possible to realise large stress-magnetoimpedance (S-MI) effect without use of any dc bias fields owing to the directional change in magnetization. This is especially important for microwave frequency S-MI effect and can be very interesting for developing stress-sensors operating at the high frequency region.

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Temperature dependence of the off‐diagonal magnetoimpedance in sensor configuration utilizing Co‐rich amorphous wires

Yudanov

Evstigneeva

Panina

et al. 2016

Physica Status Solidi (a)

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For sensor operation, the temperature stability is of primary importance. In this work, we have investigated the temperature dependence of the magnetoimpedance (MI) in glass‐coated Co‐based amorphous wires which are widely used as MI sensing elements. The magnetic alloy has high Curie and crystallization temperatures, yet, the MI change at moderate temperatures of 20–90 °C and low‐magnetic fields can be about 100%. This is explained by high‐temperature sensitivity of the residual stress due to fast solidification and the difference in thermal expansion coefficients of glass and metal. To reduce the temperature effect, annealing treatment was proposed and applied to the whole sensing element in off‐diagonal configuration comprising the MI wire and detection coil. Annealing treatment at a temperature of 160 °C during 2–3 min makes it possible to significantly improve both the magnetic field sensitivity and temperature stability. After annealing, the output voltage sensitivity in the linear region (±0.7Oe) increases more than 2.5 times and shows little variations with temperature up to 90 °C. For higher magnetic fields, the MI profile still shows noticeable change with temperature: the maximum of the output voltage decreases at a rate of about 0.15%/°C as the temperature is increased. After optimum annealing, the MI curves become almost symmetrical suggesting that a well‐defined circumferential anisotropy is established.

show abstract

Embedded ferromagnetic microwires for monitoring tensile stress in polymeric materials

Cited by 27 publications

References 32 publications

Magnetic microwires in microwave applications

Magnetic microwires in microwave applications

Stress Effects on Magnetic Properties of Amorphous Microwires Subjected to Current Annealing

Temperature dependence of the off‐diagonal magnetoimpedance in sensor configuration utilizing Co‐rich amorphous wires

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