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Monitoring delaminations in ENF specimens using chirped fibre Bragg grating sensors

Ogin, SL, Capell, TF, Thorne, AM, Reed, GT, Crocombe, AD, Tjin, SC and Lin, B (2010) Monitoring delaminations in ENF specimens using chirped fibre Bragg grating sensors In: 14TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS, 2010-06-07 - 2010-06-10, Budapest, Hungary.

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Abstract

A chirped fibre Bragg grating (CFBG) optical sensor has been used to detect delamination growth in an ENF specimen. CFBG sensors, with a sensor length of 60 mm, have been embedded within ENF specimens fabricated from out-of-autoclave CFRP. Delaminations have been propagated within the specimen from an insert embedded at the specimen midplane during manufacture. The sensor has been interrogated with the specimen subjected to four-point loading, and the perturbations detected within the reflected spectra of the sensor are in reasonable agreement with the physical position of the delaminations measured at the coupon edges. The prediction of the reflected spectrum for one delamination length, using a combination of 3-D finite-element analysis and commercial software for predicting FBG spectra, is in qualitative agreement with the experimental results. Better quantitative agreement is expected to require a more refined finite-element model of the ENF specimen.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Mechanical Engineering Science
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Ogin, SLUNSPECIFIEDUNSPECIFIED
Capell, TFUNSPECIFIEDUNSPECIFIED
Thorne, AMUNSPECIFIEDUNSPECIFIED
Reed, GTUNSPECIFIEDUNSPECIFIED
Crocombe, ADUNSPECIFIEDUNSPECIFIED
Tjin, SCUNSPECIFIEDUNSPECIFIED
Lin, BUNSPECIFIEDUNSPECIFIED
Date : 7 June 2010
Copyright Disclaimer : Copyright The Author(s)
Depositing User : Symplectic Elements
Date Deposited : 11 Nov 2016 12:49
Last Modified : 11 Nov 2016 12:50
URI: http://epubs.surrey.ac.uk/id/eprint/737190

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