Fibre optic pressure sensor and monitoring of structural defects

• Autorzy: Pandey N. K. , Yadav B. C.
• Języki publikacji: EN

Abstrakty

EN

Pressure induced microbends have been created in a 50 mm graded index multimode optical fibre with spatial periodicity L = 4.5 mm, embedded in the sample of araldite. If high pressure is applied directly to optical fibre having microbends, it may break, and if pressure is applied to embedded fibre in a solid structure without microbends, the sensitivity is lower. In this paper, a combination of the embedded sensor and microbend sensor is presented. It has the advantage of sensing high pressure on a structure with the sensitivity of a microbend sensor without breaking the optical fibre. It measures pressure up to 1.6 MPa with reproducibility within ą 5% of the measurand. The average sensitivity of the sensor is 5.3/ MPa on an arbitrary scale.

Słowa kluczowe

EN

fibre; pressure sensor; microbend; structural defects

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2007
• Tom: Vol. 37, nr 1-2
• Strony: 57--63
• Opis fizyczny: Bibliogr. 30 poz.,

Twórcy

autor

Pandey N. K.

autor

Yadav B. C.

• Materials and Sensors Research Laboratory, Lucknow University, Lucknow-226007, U.P. India

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