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Proceedings Paper

Fibre Bragg grating sensors for in-situ measurement of resin pressure in curing composites
Author(s): A. S. Ganapathi; Muneesh Maheshwari; Sunil C. Joshi; Zhong Chen; Anand Asundi; Swee Chuan Tjin
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Paper Abstract

A fibre optic sensor was developed for in-situ pressure measurement based on the principle of differential pressure in liquids. This sensor system is very simple and consists of fibre Bragg grating (FBG) done on a fibre with core diameter of 9 μm. A calibration study was carried out with a water column and the pressure sensitivity was found to be 1.636 × 10-2MPa-1. The results show that response of FBG to the rise of water level is linear and agrees well with the theoretical results. The reliability of the sensors is confirmed by repeating the measurements for three times. The sensor is useful in applications that involve in-situ resin pressure measurement in manufacturing of laminated composite materials.

Paper Details

Date Published: 4 March 2015
PDF: 6 pages
Proc. SPIE 9302, International Conference on Experimental Mechanics 2014, 93021T (4 March 2015); doi: 10.1117/12.2084783
Show Author Affiliations
A. S. Ganapathi, Nanyang Technological Univ. (Singapore)
Muneesh Maheshwari, Nanyang Technological Univ. (Singapore)
Sunil C. Joshi, Nanyang Technological Univ. (Singapore)
Zhong Chen, Nanyang Technological Univ. (Singapore)
Anand Asundi, Nanyang Technological Univ. (Singapore)
Swee Chuan Tjin, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 9302:
International Conference on Experimental Mechanics 2014
Chenggen Quan; Kemao Qian; Anand Asundi; Fook Siong Chau, Editor(s)

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