Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
論文
超磁歪アクチュエータの熱膨張補償の検討
辰巳 義和大嶽 和之高橋 良太江田 英之田代 晋久脇若 弘之矢島 久志藤原 伸広
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ジャーナル オープンアクセス

33 巻 (2009) 5 号 p. 421-424

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  Giant magnetostrictive material (GMM) is fabricated by electromechanical transformation with large magnetostriction and an electro-mechanical coupling factor. Therefore, GMM can be use to make a giant magnetostrictive actuator. However, because the thermal expansion (linear expansion) coefficient of GMM is 12 ppm/°C, expansion and contraction due to temperature change influences the stroke. This paper describes the consideration of thermal expansion compensation for the GMA, and presents: (1) the features of GMM and the principles of operation of GMA, (2) the results of thermal expansion measurements of GMA, and (3) thermal expansion compensation for the tandem structure.

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© 2009 (社)日本磁気学会
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