6/5 Seminar Speech

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上層分類：News

分類：Speeches

建立於 2017-05-31, 週三 14:04

最近更新於 2017-06-06, 週二 09:17

發佈於：2017-05-31, 週三 14:27

點擊數：5953

Speaker: Mr. Shien Uang, Jen
Topic: Magneto-mechanical property of Galfenol alloy in a bulk or thin-film form

 

Speaker：Mr. Shien Uang, Jen (任盛源 先生)

Organization：Research Fellow / Institute of Physics, Academia Sinica, Taiwan

Topic：Magneto-mechanical property of Galfenol alloy in a bulk or thin-film form

Date：10:10 , 2017.6.5

Location：Room B03, College of Engineering

Education：

Ph.D., Physics, Carnegie Mellon University, USA
M.S., Physics, Carnegie Mellon University, USA
B.S., Physics, National Taiwan University, Taiwan
Work Experience：
Research Fellow, Institute of Physics, Academia Sinica, Taiwan (present)
Professor, Department of Mechanical engineering, National Taiwan University of Science and Technology, Taiwan
Professor, Institute of Optoelectronic Sciences, National Taiwan Ocean University, Taiwan

Abstract：

Ferromagnetic Galfenol alloy is known to be a magnetostrictive material, which can find many applications as the core material in a sensor, damper, or actuator device.In this talk, I shall first introduce the experimental measuring methods on the magneto-mechanical (or magneto-elastic) properties, such as magnetostriction (λ), Young's modulus(E), shear modulus (G), and/or damping capacity (ΔW/W) as a function of external magnetic field (H), respectively, of several kinds of Galfenol samples in a bulk or thin-film form.Second, I would like to discuss the relationship between the structural and magneto-mechanical properties of the alloy: based on the X-ray, TEM, MTG, DSC, and neutron scattering analyses.Third, I shall mention a few theoretical equations often used in studying the magneto-mechanical properties of a ferromagnetic metal.Finally, I like to compare the experimental results from this work with the theoretical predictions.