Fibre Bragg grating sensors for in-situ measurement of resin pressure in curing composites

Ammasai Sengodan, G; Maheshwari, M; Joshi, SC; Chen, Z; Asundi, AK; Tjin, SC

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 × 10ିଶMPa-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.

Citation

Ammasai Sengodan, G., Maheshwari, M., Joshi, S., Chen, Z., Asundi, A., & Tjin, S. (2014, November). Fibre Bragg grating sensors for in-situ measurement of resin pressure in curing composites. Presented at International Conference on Experimental Mechanics 2014, Singapore

• Presentation Conference Type: Other
• Conference Name: International Conference on Experimental Mechanics 2014
• Conference Location: Singapore
• Start Date: Nov 15, 2014
• End Date: Nov 17, 2014
• Publication Date: Mar 1, 2015
• Deposit Date: Sep 29, 2022
• Publisher: Society of Photo-optical Instrumentation Engineers
• DOI: https://doi.org/10.1117/12.2084783
• Publisher URL: https://doi.org/10.1117/12.2084783
• Additional Information: Event Type : Conference