Design and Output Characteristics of Ultrasonic Transducer Based on Rare-earth Giant Magnetostrictive Material

Giant Magnetostrictive material is a new type of rare earth functional material which is after the rare earth permanent magnets, rare earth luminescent material and rare earth high temperature superconducting material. At present, giant magnetostrictive material has become a domestic research hot spot, and made great achievements. In this paper, research and application status on giant magnetostrictive material has been summarized. It mainly includes two aspects: giant magnetostrictive sensors and self-sensing actuator.

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Analysis of Dynamic Characteristics of the Magnetostrictive Power Ultrasonic Transducer

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.105-107.1693 ◽

2011 ◽

Vol 105-107 ◽

pp. 1693-1696

Author(s):

Geng Xin Zeng ◽

Biao Cao ◽

Hai Quan Zeng

Keyword(s):

Dynamic Characteristics ◽

Ultrasonic Transducer ◽

Steady State Solution ◽

Magnetostrictive Material ◽

Giant Magnetostrictive Material ◽

Giant Magnetostrictive Materials ◽

Power Ultrasonic ◽

External Conditions ◽

Working Principle ◽

Computer Imitation

The giant magnetostrictive material (GMM) is a novel smart material based on magnetostrictive effect, and it is well suited to power ultrasonic transducer. Based on electromagnetic theory and vibration theory, the design and working principle of the magnetostrictive power ultrasonic transducer has been explained. This paper analyzed the dynamic characteristics of giant magnetostrictive materials under the outside magnetic field and deduced the wave equation of Terfenol-D rod, and the steady-state solution to the equation was obtained under given excitation. The speed and acceleration expressions of Terfenol-D were deduced by differentiating with respect to displacement equation. Based on developing mathematical models, computer imitation was made, and the result of modulation was analyzed from external conditions of transducer and inner structure of magnetostrictive material.

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Study on Giant Magnetostrictive Material with Design and Simulation of Displacement Magnifying Mechanism

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.675.219 ◽

2013 ◽

Vol 675 ◽

pp. 219-226 ◽

Cited By ~ 1

Author(s):

Fan Zeng ◽

Jing Jun Lou ◽

Shi Jian Zhu

Keyword(s):

Maximum Stress ◽

Vibration Modes ◽

Magnetostrictive Material ◽

Output Displacement ◽

Harmonic Response ◽

Giant Magnetostrictive Material ◽

Statics And Dynamics ◽

Magnetostrictive Actuator ◽

Output Characteristics ◽

The Relationship

In order to make full use of advantages of giant magnetostrictive material and to improve output characteristics of giant magnetostrictive actuator, displacement magnifying mechanism is designed based on flexible hinges. The design parameter of the flexible hinges and strength of material of flexible hinges are calculated. Based on the analysis and comparison, the statics and dynamics analysis was carried on by analytic method and ANSYS12.1 software,the input stiffness, magnifying multiple and the relationship between output displacement and load are calculated,and the stress analysis shows that the maximum stress of magnifying mechanism is less than the maximum allowable stress of materials. The resonance frequency,vibration modes and harmonic response of the mechanism were resulted by Finite element method, and the dynamics parameters of system are get.

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Forecasts and analysis of output characteristics on Giant Magnetostrictive Material

2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE) ◽

10.1109/qr2mse.2013.6625771 ◽

2013 ◽

Author(s):

Zhongbo He ◽

Zhaoshu Yang ◽

Dongwei Li ◽

Xu Cui ◽

Guangming Xue ◽

...

Keyword(s):

Magnetostrictive Material ◽

Giant Magnetostrictive Material ◽

Output Characteristics

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Research on an axial-mounted dual magnetostrictive material rods-based electro-hydrostatic actuator

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x211014576 ◽

2021 ◽

pp. 1045389X2110145

Author(s):

Yuchuan Zhu ◽

Chang Liu ◽

Yunze Song ◽

Long Chen ◽

Yulei Jiang ◽

...

Keyword(s):

Mathematical Model ◽

Flow Rate ◽

Flow Distribution ◽

Maximum Flow ◽

Magnetostrictive Material ◽

Simulation Techniques ◽

Motion State ◽

New Type ◽

Output Characteristics ◽

Active Rectification

In this paper, an electro-hydrostatic actuator driven by dual axial-mounted magnetostrictive material rods-based pumps (MMPs) with a new type of active rectification valve is designed in the current study. Based on flow distribution of the active rectification valve and driving energy provided by two MMPs, the actuator can output continuous and bidirectional displacement. By establishing a mathematical model of the actuating system, using simulation techniques, the change rule of hydraulic cylinder’s motion state caused by different driving signals are studied and analyzed. Test equipment platform is constructed in the laboratory to test the output characteristics and confirm the feasibility of the new concept. The experimental results indicate that the maximum flow rate can reach approximately 2.7 L·min−1, while the operating frequency is 180 Hz.

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