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Proceedings Paper

Strain of optic-fiber/giant magnetostrictive film structure in magnetic field by finite element analysis
Author(s): Jiafei Hu; Mengchun Pan; Jianguang Xin; Dixiang Chen
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Paper Abstract

The magnetostrictive transducer is the most important part of the optic-fiber magnetic field sensor, and the optic-fiber/giant magnetostrictive(GMS) film coupled structure is a novel coupling form of the magnetostrictive transducer. Always we analyze the coupled structure based on the entire coupled structure being sputtered GMS material without tail-fibers. In practical application, the coupled structure has tail-fibers without films at two ends. When the entire coupled structure is immersed in the detected magnetic field, the detected magnetic field causes the GMS film strain then causing optic-fiber strain. This strain transmission process is different from it in the coupled structure entirely with GMS films without tail-fibers. The strain transmission relationship can be calculated theoretically in the coupled structure without tail-fibers, but it's complicated to theoretically calculate the strain transmission relationship in the coupled structure with tail-fibers. After large numbers of calculations and analyses by ANSYS software, we figure out some relationships of the two strain transmission processes in the respective structures and the stress distribution in the tail-fibers. These results are helpful to the practical application of the optic-fiber/ GMS film coupled structure.

Paper Details

Date Published: 3 February 2009
PDF: 8 pages
Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71570V (3 February 2009); doi: 10.1117/12.806372
Show Author Affiliations
Jiafei Hu, National Univ. of Defense Technology (China)
Mengchun Pan, National Univ. of Defense Technology (China)
Jianguang Xin, National Univ. of Defense Technology (China)
Dixiang Chen, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 7157:
2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications

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