Interrogation of fibre Bragg gratings through a fibre optic rotary joint on a geotechnical centrifuge

被引：4

作者：

Correia, Ricardo ^{[1
]}

James, Stephen W. ^{[2
]}

Marshall, Alec ^{[3
]}

Heron, Charles ^{[3
]}

Korposh, Sergiy ^{[1
]}

机构：

[1] Univ Nottingham, Elect Syst & Opt Res Div, Adv Opt Grp, Nottingham NG7 2RD, Notts, England

[2] Cranfield Univ, Dept Engn Photon, Sch Engn, Cranfield MK43 0AL, Beds, England

[3] Univ Nottingham, Dept Civil Engn, Nottingham NG7 2RD, England

来源：

SIXTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS | 2016年 / 9916卷

关键词：

FBGs; geotechnical centrifuge; fibre optic rotary joint;

D O I：

10.1117/12.2236979

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The monitoring of an array of fibre Bragg gratings (FBGs) strain sensors was performed through a single channel, single mode fibre optic rotary joint (FORJ) mounted on a geotechnical centrifuge. The array of three FBGs was attached to an aluminum plate that was anchored at the ends and placed on the model platform of the centrifuge. Acceleration forces of up to 50g were applied and the reflection signal of the monitored FBGs recorded dynamically using a 2.5kHz FBG interrogator placed outside the centrifuge. The use of a FORJ allowed the monitoring of the FBGs without submitting the FBG interrogator to the high g-forces experienced in the centrifuge.

引用

页数：4

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