工程科学学报2016，Vol.38Issue(11)：1584-1589,6.DOI:10.13374/j.issn2095-9389.2016.11.011
激光多普勒准静态法测量磁致伸缩系数
Magnetostriction quasi-static measurements with laser Doppler effect
摘要
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 dynamic characteristics curve of Galfenol driven by 10 Hz current is obtained. This method has the following advantages:(1) noncontact measurement can be imple-mented, (2) the strain of magnetostriction in any point of the rod surface can be measured, (3) the accuracy is better, and (4) little operator skill is required.关键词
铁镓合金/磁致伸缩/激光/多普勒效应Key words
iron gallium alloys/magnetostriction/laser/Doppler effect分类
矿业与冶金引用本文复制引用
李英明,莫喜平,潘耀宗,刘永平,张运强..激光多普勒准静态法测量磁致伸缩系数[J].工程科学学报,2016,38(11):1584-1589,6.基金项目
国家自然科学基金资助项目(11304350) （11304350）
中国科学院青年创新促进会资助项目(2014021) （2014021）
