Magnetomechanical design and power generation of magnetostrictive clad plate cantilever

Yang, Zhenjun; Onodera, Ryuichi; Tayama, Tsuyoki; Watanabe, Minoru; Narita, Fumio

doi:10.1063/1.5111351

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…When a clad plate with Fe-Co and Ni bonded via thermal diffusion is subjected to bending vibration, the vibration power output obtained is larger than that realized from a traditional Fe-Co plate [ 26 ]. A cantilever beam of Fe-Co/Ni clad plate thinner than those used in previous studies [ 26 , 38 ] was fabricated in the present study. The length, width, and thickness were 50 mm, w = 6.2 mm, and h = 0.2 mm, respectively.…”

Section: Methodsmentioning

confidence: 99%

On the Possibility of Developing Magnetostrictive Fe-Co/Ni Clad Plate with Both Vibration Energy Harvesting and Mass Sensing Elements

et al. 2021

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The severe acute respiratory syndrome coronavirus (SARS-CoV-2) has spread rapidly around the world. In order to prevent the spread of infection, city blockades and immigration restrictions have been introduced in each country, but these measures have a severe serious impact on the economy. This paper examines the possibility of both harvesting vibration energy and detecting mass by using a magnetostrictive alloy. Few efforts have been made to develop new magnetostrictive biosensor materials. Therefore, we propose magnetostrictive Fe-Co/Ni clad steel vibration energy harvesters with mass detection, and we numerically and experimentally discuss the effect of the proof mass weight on the frequency shift and output voltage induced by bending vibration. The results reveal that the frequency and output voltage decrease significantly as the mass increases, indicating that the energy harvesting device is capable of mass detection. In the future, device miniaturization and the possibility of virus detection will be considered.

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Section: Methodsmentioning

confidence: 99%

On the Possibility of Developing Magnetostrictive Fe-Co/Ni Clad Plate with Both Vibration Energy Harvesting and Mass Sensing Elements

et al. 2021

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“…Existing studies have shown that the bias field setting of a magnetostrictive material directly affects the electrical output of the harvester [41,42]. Adding a bias magnetic field can change the magnitude of the magnetic moment within the magnetostrictive material and induce more magnetic domains to deflect, causing the material to exhibit a stronger magnetization intensity.…”

Section: Design Analysis Of Bias Magnetic Fieldsmentioning

confidence: 99%

Design and analysis of magnetostrictive two-dimensional kinetic energy harvester

Liu,

Tong,

Sun

et al. 2024

Smart Mater. Struct.

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Conventional energy harvesters often require high ambient vibration frequencies and can only capture vibration energy in a single direction. To address these issues, this paper designs a magnetostrictive two-dimensional kinetic energy harvester placed under the floor and capable of capturing energy in both vertical and horizontal directions. In order to achieve higher electrical power output at low-frequency input forces, a two-stage force amplification mechanism is designed to amplify the walking kinetic energy of pedestrians and the main parameters of this structure are analyzed and optimized. On the other hand, by constructing different forms of bias magnetic field, the influence of bias magnetic field on the deflection and motion of the internal magnetic domain of Terfenol-D is systematically studied, and the best bias form that can make the material shows the strongest magnetization characteristics is determined. Next, a prototype harvester was built, and an experimental vibration system was set up to test and analyze the output characteristics of the harvester comprehensively. The experimental results show that the harvester produces 21.2 mW of peak output power under sinusoidal excitation at an operating frequency of 4 Hz. Under random excitation, a peak output voltage of 2.64 V and 170 mW peak power was obtained. Under actual pedestrian walking tests, 17.62 mW peak output power is obtained to power low-power devices. The study's results provide preliminary evidence that the designed magnetostrictive energy harvester can stably collect kinetic energy from pedestrian walking.

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“…A self-sensing harvester, which measures temperature [ 3 ], displacement [ 4 ], and body motions [ 5 ] without the use of specific sensors and batteries, has also been proposed for advanced applications. Transducers for vibration energy harvesting include tuned mass dampers [ 6 , 7 ], magneto-rheological elastomers [ 8 ], electromagnetic devices [ 9 , 10 ], electrets [ 11 , 12 ], magnetostrictive elements [ 13 , 14 , 15 ], and piezoelectric elements [ 16 ]. Piezoelectric transducers convert mechanical energy into electrical energy and vice versa as direct and inverse piezoelectric effects [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptive and Robust Operation with Active Fuzzy Harvester under Nonstationary and Random Disturbance Conditions

Hara

Otsuka

Makihara

2021

Sensors

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The objective of this paper is to amplify the output voltage magnitude from a piezoelectric vibration energy harvester under nonstationary and broadband vibration conditions. Improving the transferred energy, which is converted from mechanical energy to electrical energy through a piezoelectric transducer, achieved a high output voltage and effective harvesting. A threshold-based switching strategy is used to improve the total transferred energy with consideration of the signs and amplitudes of the electromechanical conditions of the harvester. A time-invariant threshold cannot accomplish effective harvesting under nonstationary vibration conditions because the assessment criterion for desirable control changes in accordance with the disturbance scale. To solve this problem, we developed a switching strategy for the active harvester, namely, adaptive switching considering vibration suppression-threshold strategy. The strategy adopts a tuning algorithm for the time-varying threshold and implements appropriate intermittent switching without pre-tuning by means of the fuzzy control theory. We evaluated the proposed strategy under three realistic vibration conditions: a frequency sweep, a change in the number of dominant frequencies, and wideband frequency vibration. Experimental comparisons were conducted with existing strategies, which consider only the signs of the harvester electromechanical conditions. The results confirm that the presented strategy achieves a greater output voltage than the existing strategies under all nonstationary vibration conditions. The average amplification rate of output voltage for the proposed strategy is 203% compared with the output voltage by noncontrolled harvesting.

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Magnetomechanical design and power generation of magnetostrictive clad plate cantilever

Cited by 7 publications

References 27 publications

On the Possibility of Developing Magnetostrictive Fe-Co/Ni Clad Plate with Both Vibration Energy Harvesting and Mass Sensing Elements

On the Possibility of Developing Magnetostrictive Fe-Co/Ni Clad Plate with Both Vibration Energy Harvesting and Mass Sensing Elements

Design and analysis of magnetostrictive two-dimensional kinetic energy harvester

Adaptive and Robust Operation with Active Fuzzy Harvester under Nonstationary and Random Disturbance Conditions

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