Investigation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>Δ</mml:mi><mml:mi>E</mml:mi></mml:math>Effect on Vibrational Behavior of Giant Magnetostrictive Transducers

Sheykholeslami, Mohammad Reza; Hojjat, Yousef; Ghodsi, Mojtaba; Kakavand, Keyvan; Cinquemani, Simone

doi:10.1155/2015/478045

Cited by 22 publications

(9 citation statements)

References 14 publications

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“…To simplify the equations, theoretical model excludes the magnetostrictive patches. Linear equation of the torsional vibrations of a rod shape material is as below [30,31]:…”

Section: Magnetic Parts Analysismentioning

confidence: 99%

Development of Magnetostrictive Resonant Torsional Vibrator

Karafi¹,

Ghodsi²,

Hojjat³

2015

IEEE Trans. Magn.

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In this paper, the design, construction, and operation of a magnetostrictive resonant torsional vibrator is described. To generate torsional vibration, two magnetostrictive patches are bonded on an aluminium horn. Two magnetic fields, longitudinal and circumferential, are applied into the patches. As a result, magnetostrictive patches vibrate torsionally based on the Wiedemann effect. The magnetostrictive patches are made up of "2V permendur" which has isotropic magnetic properties. The principle of the torsional vibrator is explained, and differential equations of torsional vibration of the horn are derived. A torsional horn is designed for resonant frequency of 8515 Hz. Experimental results show that the torsional angle of the tip of the horn is rad. This type of vibrator is exploited in applications which require torsional vibration such as miniature ultrasonic motors or ultrasonic assisted bone drilling system. In other words, the vibrator is being used as an actuator.

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“…To simplify the equations, theoretical model excludes the magnetostrictive patches. Linear equation of the torsional vibrations of a rod shape material is as below [30,31]:…”

Section: Magnetic Parts Analysismentioning

confidence: 99%

Development of Magnetostrictive Resonant Torsional Vibrator

Karafi¹,

Ghodsi²,

Hojjat³

2015

IEEE Trans. Magn.

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“…Results show that higher quality factor in the second mode shape and it has lower sensitivity with Young modulus. Moreover, Δ E effect and its influence on vibrational behavior of the this transducer have been studied [ 15 ]. With this type of transducer, Δ E effect leads to a change in the resonance frequency about 4 percent.…”

Section: Introductionmentioning

confidence: 99%

The Design of Rare-Earth Giant Magnetostrictive Ultrasonic Transducer and Experimental Study on Its Application of Ultrasonic Surface Strengthening

et al. 2018

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Ultrasonic transducer based on rare-earth giant magnetostrictive materials was designed in accordance with the technical requirements of ultrasonic surface strengthening. The whole structure of the transducer was designed. Modal analysis is made to get the natural frequency of the compound oscillator. The working frequency of the transducer should be guaranteed at about 15.2 kHz and the composite oscillator should have relatively better vibration mode. The magnetic field of the transducer is well sealed and the transducer will not show obvious magnetic flux leakage phenomenon. Which shows the rationality of structural design. Based on this transducer, the ultrasonic surface strengthening experiment on 40 steel was conducted. The surface roughness and hardness of the parts were analyzed after the experiment. The results show that the surface of the parts reach the mirror surface result after the ultrasonic strengthening. When compared to the previous process, the roughness decreases by about 75%, and the surface hardness increases by more than 20%.

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“…Compared with piezoelectric ceramics, GMM's extend-retract strain, output force and energy strain are all much higher [12][13][14][15]. Therefore, when it is used for ball screw pre-tightening, the pre-tightening force can be adjusted within a relatively wider range [16], and precise adjustment of pre-tightening force can be achieved simultaneously [17].…”

Section: Introductionmentioning

confidence: 99%

Design of new giant magnetostrictive structures for double-nut ball screw pre-tightening

Lin

2017

J Braz. Soc. Mech. Sci. Eng.

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Design of giant magnetostrictive structure for double-nut ball screw pre-tightening 2.1 Present double-nut ball screw pre-tightening structure Currently, there are two kinds of ball screw pre-tightening methods: single nut and double nut. The double-nut method, which can repeatedly adjust and maintain the pretightening force, is used in precision transmission where the return clearance is not allowed to exist. Double-nut pre-tightening methods include the gasket method, the thread method, the tooth difference method, the spring method and the piezoelectric ceramics method. In the gasket method, the two nuts are separated by a gasket and contact with the screw in opposite direction.

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Investigation ofΔEEffect on Vibrational Behavior of Giant Magnetostrictive Transducers

Cited by 22 publications

References 14 publications

Development of Magnetostrictive Resonant Torsional Vibrator

Development of Magnetostrictive Resonant Torsional Vibrator

The Design of Rare-Earth Giant Magnetostrictive Ultrasonic Transducer and Experimental Study on Its Application of Ultrasonic Surface Strengthening

Design of new giant magnetostrictive structures for double-nut ball screw pre-tightening

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