Quality factor, static and dynamic responses of miniature galfenol actuator at wide range of temperature

Mojtaba Ghodsi, Mehdi Modabberifar, Toshiyuki Ueno

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this research, galfenol (iron-gallium alloy) is exploited to make a miniature actuator. The relationship between displacement and the applied current is measured. Furthermore, the dynamic behaviors of the actuator in wide range of temperature from cryogenic environment (77 K) to room temperature (RT) are investigated numerically and experimentally. Although, the length of galfenol bar is 10 mm and the maximum strain of annealed galfenol bar is 200 ppm, the large displacements of 37 and 25 μm are achievable at RT and 77 K, respectively when the coil is energized by ±1 A. The natural frequency of this actuator at RT and 77K is 1015 and 1075 Hz, respectively. Furthermore, modal analysis predicts the natural frequency of the actuator by maximum 9% error. Low hysteresis behavior makes this actuator suitable for positioning at both, RT and 77 K. It is also found that the low quality factor of actuator at RT is related to Joule heat dissipation.

Original languageEnglish
Pages (from-to)8143-8150
Number of pages8
JournalInternational Journal of Physical Sciences
Volume6
Issue number36
DOIs
Publication statusPublished - Dec 30 2011

Fingerprint

dynamic response
Dynamic response
Q factors
Actuators
actuators
room temperature
Temperature
temperature
resonant frequencies
Natural frequencies
Gallium alloys
gallium alloys
iron alloys
Iron alloys
Modal analysis
Heat losses
Cryogenics
positioning
cryogenics
Hysteresis

Keywords

  • Cryogenic environment
  • Galfenol (iron-gallium alloy)
  • Miniature actuator
  • Modal analysis
  • Quality factor

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

Quality factor, static and dynamic responses of miniature galfenol actuator at wide range of temperature. / Ghodsi, Mojtaba; Modabberifar, Mehdi; Ueno, Toshiyuki.

In: International Journal of Physical Sciences, Vol. 6, No. 36, 30.12.2011, p. 8143-8150.

Research output: Contribution to journalArticle

@article{c0dc556a19864a57a11d4f623070b693,
title = "Quality factor, static and dynamic responses of miniature galfenol actuator at wide range of temperature",
abstract = "In this research, galfenol (iron-gallium alloy) is exploited to make a miniature actuator. The relationship between displacement and the applied current is measured. Furthermore, the dynamic behaviors of the actuator in wide range of temperature from cryogenic environment (77 K) to room temperature (RT) are investigated numerically and experimentally. Although, the length of galfenol bar is 10 mm and the maximum strain of annealed galfenol bar is 200 ppm, the large displacements of 37 and 25 μm are achievable at RT and 77 K, respectively when the coil is energized by ±1 A. The natural frequency of this actuator at RT and 77K is 1015 and 1075 Hz, respectively. Furthermore, modal analysis predicts the natural frequency of the actuator by maximum 9{\%} error. Low hysteresis behavior makes this actuator suitable for positioning at both, RT and 77 K. It is also found that the low quality factor of actuator at RT is related to Joule heat dissipation.",
keywords = "Cryogenic environment, Galfenol (iron-gallium alloy), Miniature actuator, Modal analysis, Quality factor",
author = "Mojtaba Ghodsi and Mehdi Modabberifar and Toshiyuki Ueno",
year = "2011",
month = "12",
day = "30",
doi = "10.5897/IJPS11.918",
language = "English",
volume = "6",
pages = "8143--8150",
journal = "International Journal of Physical Sciences",
issn = "1992-1950",
publisher = "Academic Journals",
number = "36",

}

TY - JOUR

T1 - Quality factor, static and dynamic responses of miniature galfenol actuator at wide range of temperature

AU - Ghodsi, Mojtaba

AU - Modabberifar, Mehdi

AU - Ueno, Toshiyuki

PY - 2011/12/30

Y1 - 2011/12/30

N2 - In this research, galfenol (iron-gallium alloy) is exploited to make a miniature actuator. The relationship between displacement and the applied current is measured. Furthermore, the dynamic behaviors of the actuator in wide range of temperature from cryogenic environment (77 K) to room temperature (RT) are investigated numerically and experimentally. Although, the length of galfenol bar is 10 mm and the maximum strain of annealed galfenol bar is 200 ppm, the large displacements of 37 and 25 μm are achievable at RT and 77 K, respectively when the coil is energized by ±1 A. The natural frequency of this actuator at RT and 77K is 1015 and 1075 Hz, respectively. Furthermore, modal analysis predicts the natural frequency of the actuator by maximum 9% error. Low hysteresis behavior makes this actuator suitable for positioning at both, RT and 77 K. It is also found that the low quality factor of actuator at RT is related to Joule heat dissipation.

AB - In this research, galfenol (iron-gallium alloy) is exploited to make a miniature actuator. The relationship between displacement and the applied current is measured. Furthermore, the dynamic behaviors of the actuator in wide range of temperature from cryogenic environment (77 K) to room temperature (RT) are investigated numerically and experimentally. Although, the length of galfenol bar is 10 mm and the maximum strain of annealed galfenol bar is 200 ppm, the large displacements of 37 and 25 μm are achievable at RT and 77 K, respectively when the coil is energized by ±1 A. The natural frequency of this actuator at RT and 77K is 1015 and 1075 Hz, respectively. Furthermore, modal analysis predicts the natural frequency of the actuator by maximum 9% error. Low hysteresis behavior makes this actuator suitable for positioning at both, RT and 77 K. It is also found that the low quality factor of actuator at RT is related to Joule heat dissipation.

KW - Cryogenic environment

KW - Galfenol (iron-gallium alloy)

KW - Miniature actuator

KW - Modal analysis

KW - Quality factor

UR - http://www.scopus.com/inward/record.url?scp=84855777675&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855777675&partnerID=8YFLogxK

U2 - 10.5897/IJPS11.918

DO - 10.5897/IJPS11.918

M3 - Article

AN - SCOPUS:84855777675

VL - 6

SP - 8143

EP - 8150

JO - International Journal of Physical Sciences

JF - International Journal of Physical Sciences

SN - 1992-1950

IS - 36

ER -