Strain and Vibration Sensor Based on Inverse Magnetostriction of Amorphous Magnetostrictive Films

The applications of sensors in the aerospace industry are mostly concentrated in the middle and high frequencies, and low-frequency sensors often face the problems of low power and short working bandwidth. A lightweight, thin, high-power, low-frequency broadband transducer based on giant magnetostrictive material is designed. The design and optimization processes of the core components are introduced and analyzed emphatically. The finite element simulation results are validated by the PSV-100 laser vibration meter. Three basic configurations of the work panel are proposed, and the optimal configuration is determined by modal, acoustic, and vibration coupling analyses. Compared with the original configuration, it is found that the lowest resonant frequency of the optimal configuration is reduced by 24.6% and the highest resonant frequency within 2000 Hz is 1744.9 Hz, which is 54.2% higher than that of the original configuration. This greatly improves the vibration power and operating frequency range of the transducer. Then, the honeycomb structure is innovatively applied to the work panel, and it is verified that the honeycomb structure has a great effect on the vibration performance of the work panel. By optimizing the size of the honeycomb structure, it is determined that the honeycomb structure can improve the vibration power of the work panel to its maximum value when the distance between the half-opposite sides of the hexagon is H = 3.5 mm. It can reduce the resonant frequency of the work panel; the lowest resonant frequency is reduced by 12.8%. At the same time, the application of a honeycomb panel structure can reduce the weight of the transducer.

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“…The resonant frequency of circular panel bending vibration [ 34 ] is:

where,

and

are the density, Poisson’s ratio, elastic modulus, thickness, and radius of the work panel, respectively;

represents the root of the lower-order frequency equation.…”

Section: Original Configuration Of Gmm Transducermentioning

confidence: 99%

Design and Optimization of High-Power and Low-Frequency Broadband Transducer with Giant Magnetostrictive Material

Yang

Wang

Zhao

et al. 2022

Sensors

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“…The SI effect is, thus, a new addition to a broad series of magnetomechanical effects [ 22 ], some of which were first observed in the first half of the nineteen century, and are researched to this day due to high sensitivity of various experimental sensors, which can be obtained in newly developed materials [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. The most known of the magnetomechanical effects are magnetostrictive and Villari effects [ 33 ], the latter leads to a change in magnetic permeability due to the mechanical stress, by inducing temporary magnetic anisotropy in stress direction [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Giant Stress-Impedance Effect in CoFeNiMoBSi Alloy in Variation of Applied Magnetic Field

Gazda

Nowicki

2021

Materials

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The article presents the stress impedance investigation of CoFeNiMoBSi alloy in variation of the applied magnetic field. In order to carry out the study, a specialized stand was developed that allows for loading the sample with stresses and simultaneous action of the DC (direct current) magnetizing field. The tests were carried out for as-cast and Joule annealed samples. The significant influence of the magnetizing field acting on the sample on the stress-impedance results was demonstrated and the dependence of the maximum impedance change in the stress-impedance effect was determined, depending on the field acting. The obtained results are important due to the potential use of the stress-impedance effect for the construction of stress sensors.

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Magneto Elasticity Modeling for Stress Sensors

et al. 2022

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In this article, the stress/stress sensing capability of FeSiB thin films is demonstrated and discussed. The sensing relies on the change in permeability by the application of stress, compressive and tensile, and the application of DC magnetic field. This susceptibility/permeability was tested by the exciting field (AC) being in the same direction with the applied stress. The susceptibility was shown to exhibit a maximal value at a given applied stress, the critical stress. Moreover, this maximal amplitude and position was changing with the application of an external DC magnetic field. For the DC field applied in the direction of the exciting field (AC) and longitudinal to the stress, the critical stress was shifted toward negative values and for the DC field applied perpendicularly, the critical stress was shifted toward larger positive values. This was experimentally demonstrated, and a model was constructed for a better understanding.

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Strain and Vibration Sensor Based on Inverse Magnetostriction of Amorphous Magnetostrictive Films

Cited by 3 publications

References 8 publications

Design and Optimization of High-Power and Low-Frequency Broadband Transducer with Giant Magnetostrictive Material

Design and Optimization of High-Power and Low-Frequency Broadband Transducer with Giant Magnetostrictive Material

Giant Stress-Impedance Effect in CoFeNiMoBSi Alloy in Variation of Applied Magnetic Field

Magneto Elasticity Modeling for Stress Sensors

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