• Title/Summary/Keyword: magnetostrictive actuator

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Fabrication and Test of a Micro Pump with a Magnetostrictive diaphragm (자기변형 박막을 이용한 마이크로 펌프의 제작과 시험)

  • Seo, Jee-Hoon;Jeong, Ok-Chan;Yang, Sang-Sik
    • Proceedings of the KIEE Conference
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    • 1998.11c
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    • pp.1017-1019
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    • 1998

  • In this paper, the fabrication of a micropump with two giant magnetostrictive films of Sm-Fe and Tb-Fe is presented. The pump consist of one silicon wafer and one cover glass. The micropump consists of an actuator diaphragm, a paired nozzle and diffuser, and two through holes. The Structure of the micropump is fabricated by the chemical vapor deposition, the etching and the sputtering of the magnetostrictive films. The deflection of the actuator measured diaphragm is measured by using the laser vibrometer and the flow rate of the micro pump is observed by using a video microscope.

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On magnetostrictive materials and their use in adaptive structures

  • Dapino, Marcelo J.
    • Structural Engineering and Mechanics
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    • v.17 no.3_4
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    • pp.303-329
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    • 2004

  • Magnetostrictive materials are routinely employed as actuator and sensor elements in a wide variety of noise and vibration control problems. In infrastructural applications, other technologies such as hydraulic actuation, piezoelectric materials and more recently, magnetorheological fluids, are being favored for actuation and sensing purposes. These technologies have reached a degree of technical maturity and in some cases, cost effectiveness, which justify their broad use in infrastructural applications. Advanced civil structures present new challenges in the areas of condition monitoring and repair, reliability, and high-authority actuation which motivate the need to explore new methods and materials recently developed in the areas of materials science and transducer design. This paper provides an overview of a class of materials that because of the large force, displacement, and energy conversion effciency that it can provide is being considered in a growing number of quasistatic and dynamic applications. Since magnetostriction involves a bidirectional energy exchange between magnetic and elastic states, magnetostrictive materials provide mechanisms both for actuation and sensing. This paper provides an overview of materials, methods and applications with the goal to inspire novel solutions based on magnetostrictive materials for the design and control of advanced infrastructural systems.

  • https://doi.org/10.12989/sem.2004.17.3_4.303 인용 KSCI

Analysis and Design Actuator of Using Magnetostrictive Material (자기왜형 물질을 이용한 액츄에이터의 설계 및 특성해석)

  • Jang, S.M.;Cha, S.D.;Lim, C.U.;Jeong, T.Y.
    • Proceedings of the KIEE Conference
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    • 2001.07b
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    • pp.751-753
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    • 2001

  • The characteristic of magnetostrictive is to change shape in a magnetic field, TERFENOL-D is said to produce magnetostriction. A magneto strictive actuator need to the magnetic circuit. The most important design consideration is the magnetic circuit. The magnetic circuit consists of the solenoid coil, permanets for bias and shaping of the other parts through which the magnetic field passes. A good magnetic circuit ensures the proper magnetic field in th TERFENOL-D and very uniform magnetic field in all phases of the actuator operating cycle. This paper presents magnetic circuit design and analysis uesing FEM.

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APPLICATION OF GIANT MAGNETOSTRICTIVE MATERIAL TO DISC BRAKE ACTUATOR

  • OGAWA, Yutaka;MURATA, Yukio;KAWASE, Kazuo;WAKIWAKA, Hiroyuki;MIZUNO, Tsutomu;YAMADA, Hajime
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.560-563
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    • 1998

  • For the next generation railway brake system, a disc brake which can be operated directly and electrically is strongly expected. This paper deals with newly developed disc brake actuator using giant magnetostrictive materials(GMM) which can be integrated with disc brake. Regarding the brake system performance, a better delay time was also attained which can be integrated with disc brake. Regarding the brake system performance, a better delay time was also attained which will contribute to shorten a stopping distance.

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Feasibility Assessment of New Hybrid Linear Motor Using Magnetostrictive Material

  • Kim, Jaehwan;Doo, Jae-Kyun;Kim, Jae-Do
    • International Journal of Precision Engineering and Manufacturing
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    • v.2 no.2
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    • pp.26-30
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    • 2001

  • This paper deals with the feasibility assessment of hybrid linear motor that operates based on self-moving cell concept. The moving cell is composed of Magnetostrictive actuator and a ring structure, and a cell train is constructed by connecting two cells in series. Since this motor uses strong push force of Terfenol-D actuators and friction of the cells, it can essentially produce long stroke and large force. The overall performance of the motor was measured in terms of speed and force.

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