Dynamic/static displacement sensor based on magnetoelectric composites

doi:10.1063/1.5037378

	Dynamic/static displacement sensor based on magnetoelectric composites
	Yang, Yikun; Yang, Bintang; Niu, Muqing
刊名	Applied Physics Letters
	2018
卷号	113 期号:3
ISSN号	00036951
DOI	10.1063/1.5037378
英文摘要	This study presents a dynamic/static displacement sensor based on both end fixed Terfenol-D/PZT (lead zirconate titanate) magnetoelectric composites. Owing to the fixed boundary condition, the magnetostriction of Terfenol-D under the magnetic field is limited and the stress acts on PZT through mechanical coupling, and finally, an induced voltage is generated due to the piezoelectric effect in PZT. The magnetic field applied on the magnetoelectric composites varies with the displacement of the permanent magnet which represents the displacement to be measured. In that case, the determination of displacement can be transformed into determining the variation of the magnetic field. The experimental results manifest that the frequency of magnetoelectric voltage is the same as the frequency of displacement. The dynamic displacement sensitivity of this sensor increases with the increase in the input frequency in the low frequency range and the decrease in the length of the air gap. The sensitivity is 6.549 mV/μm with a 0.75 mm air gap for dynamic displacement at 10 Hz and 0.84 μV/μm with a 2.5 mm air gap and an external magnetic field at 1 kHz for static displacement. It can be concluded that the displacement measuring mechanism based on the magnetoelectric effect is a promising robust and accurate method. © 2018 Author(s).
出版者	American Institute of Physics Inc.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25143]
专题	中国科学院上海硅酸盐研究所
作者单位	State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai; 200240, China
推荐引用方式 GB/T 7714	Yang, Yikun,Yang, Bintang,Niu, Muqing. Dynamic/static displacement sensor based on magnetoelectric composites[J]. Applied Physics Letters,2018,113(3).
APA	Yang, Yikun,Yang, Bintang,&Niu, Muqing.(2018).Dynamic/static displacement sensor based on magnetoelectric composites.Applied Physics Letters,113(3).
MLA	Yang, Yikun,et al."Dynamic/static displacement sensor based on magnetoelectric composites".Applied Physics Letters 113.3(2018).