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Non-invasive pressure monitoring by hoop strain using Fiber Bragg Grating sensor

Shikha, * and Umesh, Sharath and Asokan, Sundarrajan (2015) Non-invasive pressure monitoring by hoop strain using Fiber Bragg Grating sensor. In: 3rd Conference of the Optics-and-Photonics-Society-of-Singapore / International Conference on Optical and Photonic Engineering (icOPEN), APR 14-16, 2015, Singapore, SINGAPORE.

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Official URL: http://dx.doi.org/10.1117/12.2189663


Non-invasive, real-time dynamic monitoring of pressure inside a column with the aid of Fiber Bragg Grating (FBG) sensor is presented in the present work. A bare FBG sensor is adhered on the circumference of a pressure column normal to its axis, which has the ability to acquire the hoop strain induced by the pressure variation inside the column. Pressure induced hoop strain response obtained using FBG sensor is validated against the pressure measurements obtained from conventional pressure gauge. Further, a protrusion setup on the outer surface of the column has been proposed over which a secondary FBG sensor is bonded normal to its axis, in order to increase the gauge length of this FBG sensor. This is carried out in order to validate the variation in sensitivity of the protrusion bonded FBG sensor compared to the bare FBG sensor bonded over the surface. A comparative study is done between the two FBG sensors and a conventional pressure gauge in order to establish the capacity of FBG sensor obtained hoop strain response for pressure monitoring inside the column.

Item Type: Conference Proceedings
Series.: Proceedings of SPIE
Additional Information: Copy right for this article belongs to the SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Keywords: Non-invasive pressure sensing; Fiber Bragg Grating; Hoop strain
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 11 Sep 2015 05:13
Last Modified: 22 Oct 2018 09:38
URI: http://eprints.iisc.ac.in/id/eprint/52340

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