Magnetoelastic torque sensor utilizing FeGa system magnetostriction material

Masanobu Hasegawa; Kenji Hashimoto; Wataru Yoshimura; Teiko Okazaki; Yasubumi Furuya; Munekatu Shimada

doi:10.1299/kikaia.73.1309

Magnetoelastic torque sensor utilizing FeGa system magnetostriction material

Masanobu Hasegawa, Kenji Hashimoto, Wataru Yoshimura, Teiko Okazaki, Yasubumi Furuya, Munekatu Shimada

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Non-contact torque sensor by using magnetostrictive alloy ring of polycrystalline FeGa (Galfenol) system was developed. For engineering sensor applications for automobile etc., it becomes necessary to increase the strength much more than that of the present binary FeGa alloy. Therefore, in the present paper, at first, ternary FeGaAl alloy with an additional C element was fabricated and then the magnetic property and mechanical property of that alloy were investigated. (Fe-13.6 Ga-6 Al)-1.5C [at.%] sample showed the value of 50 ppm of maximum magnetostriction and value of 667 MPa of fracture stress which seem applicable as a torque sensor material. The torque sensor system was assembled using this alloy ring on the twisted shaft of non-ferromagnetic material and the output magnetic field was measured by ten adjacent Hall-sensor. The output voltage showed the almost linear relationship against applied torque and the sensitivity was 47.5 mOe/N·m, which seems a promising data for the proposed torque sensing system.

Original language	English
Pages (from-to)	1309-1312
Number of pages	4
Journal	Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	73
Issue number	11
DOIs	https://doi.org/10.1299/kikaia.73.1309
Publication status	Published - 2007 Nov
Externally published	Yes

Keywords

FeGa (Galfenol)
Inverse magnetostriction effect
Magnetostriction
Torque sensor

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1299/kikaia.73.1309

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Magnetoelastic torque sensor utilizing FeGa system magnetostriction material. / Hasegawa, Masanobu; Hashimoto, Kenji; Yoshimura, Wataru; Okazaki, Teiko; Furuya, Yasubumi; Shimada, Munekatu.

In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 73, No. 11, 11.2007, p. 1309-1312.

Research output: Contribution to journal › Article › peer-review

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abstract = "Non-contact torque sensor by using magnetostrictive alloy ring of polycrystalline FeGa (Galfenol) system was developed. For engineering sensor applications for automobile etc., it becomes necessary to increase the strength much more than that of the present binary FeGa alloy. Therefore, in the present paper, at first, ternary FeGaAl alloy with an additional C element was fabricated and then the magnetic property and mechanical property of that alloy were investigated. (Fe-13.6 Ga-6 Al)-1.5C [at.%] sample showed the value of 50 ppm of maximum magnetostriction and value of 667 MPa of fracture stress which seem applicable as a torque sensor material. The torque sensor system was assembled using this alloy ring on the twisted shaft of non-ferromagnetic material and the output magnetic field was measured by ten adjacent Hall-sensor. The output voltage showed the almost linear relationship against applied torque and the sensitivity was 47.5 mOe/N·m, which seems a promising data for the proposed torque sensing system.",

keywords = "FeGa (Galfenol), Inverse magnetostriction effect, Magnetostriction, Torque sensor",

author = "Masanobu Hasegawa and Kenji Hashimoto and Wataru Yoshimura and Teiko Okazaki and Yasubumi Furuya and Munekatu Shimada",

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AU - Hasegawa, Masanobu

AU - Hashimoto, Kenji

AU - Yoshimura, Wataru

AU - Okazaki, Teiko

AU - Furuya, Yasubumi

AU - Shimada, Munekatu

PY - 2007/11

Y1 - 2007/11

N2 - Non-contact torque sensor by using magnetostrictive alloy ring of polycrystalline FeGa (Galfenol) system was developed. For engineering sensor applications for automobile etc., it becomes necessary to increase the strength much more than that of the present binary FeGa alloy. Therefore, in the present paper, at first, ternary FeGaAl alloy with an additional C element was fabricated and then the magnetic property and mechanical property of that alloy were investigated. (Fe-13.6 Ga-6 Al)-1.5C [at.%] sample showed the value of 50 ppm of maximum magnetostriction and value of 667 MPa of fracture stress which seem applicable as a torque sensor material. The torque sensor system was assembled using this alloy ring on the twisted shaft of non-ferromagnetic material and the output magnetic field was measured by ten adjacent Hall-sensor. The output voltage showed the almost linear relationship against applied torque and the sensitivity was 47.5 mOe/N·m, which seems a promising data for the proposed torque sensing system.

AB - Non-contact torque sensor by using magnetostrictive alloy ring of polycrystalline FeGa (Galfenol) system was developed. For engineering sensor applications for automobile etc., it becomes necessary to increase the strength much more than that of the present binary FeGa alloy. Therefore, in the present paper, at first, ternary FeGaAl alloy with an additional C element was fabricated and then the magnetic property and mechanical property of that alloy were investigated. (Fe-13.6 Ga-6 Al)-1.5C [at.%] sample showed the value of 50 ppm of maximum magnetostriction and value of 667 MPa of fracture stress which seem applicable as a torque sensor material. The torque sensor system was assembled using this alloy ring on the twisted shaft of non-ferromagnetic material and the output magnetic field was measured by ten adjacent Hall-sensor. The output voltage showed the almost linear relationship against applied torque and the sensitivity was 47.5 mOe/N·m, which seems a promising data for the proposed torque sensing system.

KW - FeGa (Galfenol)

KW - Inverse magnetostriction effect

KW - Magnetostriction

KW - Torque sensor

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Magnetoelastic torque sensor utilizing FeGa system magnetostriction material

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