Magnetostriction quasi-static measurements with laser Doppler effect

LI Ying-ming; MO Xi-ping; PAN Yao-zong; LIU Yong-ping; ZHANG Yun-qiang

doi:10.13374/j.issn2095-9389.2016.11.011

Volume 38 Issue 11

Jul. 2021

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Article Navigation > Chinese Journal of Engineering > 2016 > 38(11): 1584-1589

LI Ying-ming, MO Xi-ping, PAN Yao-zong, LIU Yong-ping, ZHANG Yun-qiang. Magnetostriction quasi-static measurements with laser Doppler effect[J]. Chinese Journal of Engineering, 2016, 38(11): 1584-1589. doi: 10.13374/j.issn2095-9389.2016.11.011

Citation:

LI Ying-ming, MO Xi-ping, PAN Yao-zong, LIU Yong-ping, ZHANG Yun-qiang. Magnetostriction quasi-static measurements with laser Doppler effect[J]. Chinese Journal of Engineering, 2016, 38(11): 1584-1589. doi: 10.13374/j.issn2095-9389.2016.11.011

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Magnetostriction quasi-static measurements with laser Doppler effect

doi: 10.13374/j.issn2095-9389.2016.11.011

1. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Physical Science, University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2015-12-17
Available Online: 2021-07-28

Abstract

Abstract

A quasi-static method for measuring the magnetostrictive coefficient of Fe-Ga alloys by using laser Doppler effect was put forward, and its working principle was also analyzed. The quasi-static magnetostrictive coefficient of Galfenol was measured. The results show that strains obtained from the measuring setup are consistent with factory data, and the dynamie characteristics curve of Galfenol driven by 10 Hz current is obtained. This method has the following advantages:(1) noncontact measurement can be implemented, (2) the strain of magnetostrietion in any point of the rod surface can be measured, (3) the accuracy is better, and (4) little operator skill is required.
- iron gallium alloys,
- magnetostriction,
- laser,
- Doppler effect