Potential application of innovative magnetoelastic resonators for vibration detection

Ausanio, G.; Iannotti, V.; Luponio, C.; Lanotte, L.; Germano, Roberto; D’Agostino, Alfred T.; Inverno, Michele; Sorrentino, Romualdo

doi:10.1016/s0924-4247(01)00474-5

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…The A o value, even in absence of any magnetizing static field, is strongly dependent on the exciting signal frequency and reaches a maximum at the frequency of the fundamental spontaneous vibration, when stationary acoustic longitudinal waves are established. Some decades ago, the alloy Fe 62.5 Co 6 Ni 7.5 Zr 6 Cu 1 Nb 2 B 15 was conceived, produced in the shape of thin ribbon and characterized, as the best soft magnetic material, sensitive to very low magnetic field and therefore optimal as resonator core for the detection of low magnetic field and its changes [20][21]. A proper heat treatment, able both to maximize resonant magnetoelastic waves amplitude, at zero magnetizing field, and to achieve higher sensor sensitivity, also in comparison to the previous most performant amorphous metal (Metglass 2826), was also performed.…”

Section: Detection Of Rotation By Means Of Resonant Magnetoelastic Wavesmentioning

confidence: 99%

“…The property of magnetoelastic amorphous ribbons and wires to change the frequency of electric and/or mechanical resonance as a function of several external parameters (i.e., local magnetic field, tensile stress, temperature, pressure, external loads, damping factors) has been largely employed for measuring static or dynamic strain [1][2][3][4], low intensity magnetic field [5], fluid viscosity [6,7], with several applications in industrial engineering [8,9] and bio-medicine [10][11][12]. In particular, although many alternative techniques are developing for viscosity measurements [13][14][15], the interest for more reliable and sensitive devices based on magnetoelastic resonance of metallic glass cores is currently alive and fueled by continuous improvements in material treatment [16], device technology [16,17] and measurement methodology itself [18].…”

Section: Introductionmentioning

confidence: 99%

“…A-Experimental apparatus with magnetic dipole (0), oscillating element immersed in milk (1) and sensor(2). B-Apparatus A immersed in a simple thermostatic cell, constituted by a pyrex ampoule (3), a thermometer (4) and an hotplate (5), using water to stabilize thermal exchange.…”

mentioning

confidence: 99%

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Torsional oscillation monitoring by means of a magnetoelastic resonator: modeling and experimental functionalization to measure viscosity of liquids

Lanotte

Ausanio

Iannotti

et al. 2019

Sensors and Actuators A: Physical

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A new application of a high sensitivity magnetoelastic resonator able to measure period and damping constant of low frequency torsional oscillation is described and validated by experimental tests. The sensitive parameter is the amplitude of resonant magnetoelastic waves in the soft ferromagnetic core (Fe 62.5 Co 6 Ni 7.5 Zr 6 Cu 1 Nb 2 B 15 amorphous ribbon). The theoretical model of the device has been developed, correlating torsional oscillations to the friction force applied by the fluid in which they occur. Thus, an accurate indirect evaluation of fluid viscosity has been demonstrated. The main prerogative of the proposed sensor is to work without contact with the oscillating mechanism. As experimental validation, viscosity of UHT milk was measured versus different fat content. The experimental comparison with a standard rheometer demonstrates the new device competitiveness in the measure of low viscosity fluids at low share rate. Moreover, the detected behaviors at increasing temperature are in agreement with previous literature. In perspective, the new magnetoelastic resonators application can be very ductile and effective in on-line monitoring of viscosity change with time to control composition, degradation or contamination of liquids.

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Section: Detection Of Rotation By Means Of Resonant Magnetoelastic Wavesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Torsional oscillation monitoring by means of a magnetoelastic resonator: modeling and experimental functionalization to measure viscosity of liquids

Lanotte

Ausanio

Iannotti

et al. 2019

Sensors and Actuators A: Physical

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“…In previous papers, we have shown the possible use of elastomagnetic materials both in sensing devices and in vibration attenuation . In particular, a new composite elastomagnetic attenuator (CEA) was produced and tested .…”

Section: Introductionmentioning

confidence: 99%

Relative vibration attenuation by means of self-active devices constituted by permanent magnets separated by silicone layers

Ricciardi

Ausanio

Iannotti

et al. 2016

Struct. Control Health Monit.

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The relative vibrations of two small frames with different stiffness, subjected to the same oscillating excitation coming from their base platform, were investigated. The effects of the innovative coupling of standard passive attenuation and time variation of magnetic forces (self-produced by the vibration itself) were investigated. The first experimental tests demonstrate that the amplitude of relative vibration can be easily decreased up to 75% without requiring external energy. In perspective, by varying the attenuator shape and power, it is possible to use it in all the cases in which it is necessary to reduce the vibrations of a breakable or unstable structure inside a building accidentally exposed to vibration, such as a rotor inside a frame or a shelf in a museum room.

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Magnetoelastic properties of nanostructured FeCoSiB ribbons used for high‐sensitive stress sensors

Pham

Giang

Tinh

et al. 2007

Phys. Status Solidi (c)

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High-sensitive stress sensor is simply constructed comprising magnetostrictive 30 µm-thick (Fe 80 Co 20 ) 78 Si 12 B 10 ribbon acting as a sensitive magnetic core inside an induction coil. The stress can be determined indirectly by measuring the change in the output voltage in the two-coil system. The results show that the sensitivity highly depends on the intrinsic properties of the ribbon cores. The optimum with both a high sensitivity and an almost linear stress dependence of output signal was obtained in the 250 °C-annealed ribbon. This is attributed to the correlation between the magnetic and magnetoelastic softness governed by the fine 10 nm nanograin structure. These high sensitivity and simple fabrication sensors are widely applicable to various stress detecting fields.

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Potential application of innovative magnetoelastic resonators for vibration detection

Cited by 13 publications

References 4 publications

Torsional oscillation monitoring by means of a magnetoelastic resonator: modeling and experimental functionalization to measure viscosity of liquids

Torsional oscillation monitoring by means of a magnetoelastic resonator: modeling and experimental functionalization to measure viscosity of liquids

Relative vibration attenuation by means of self-active devices constituted by permanent magnets separated by silicone layers

Magnetoelastic properties of nanostructured FeCoSiB ribbons used for high‐sensitive stress sensors

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