Practicalities of BVID detection on aerospace-grade CFRP materials with optical fibre sensors
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Several reports have recently shown the capability of optical fibre sensors for the detection of barely visible impact damage (BVID) on CFRP laminates, based on changes in the optical signal before and after impact. Although this approach was shown to work well in lab conditions, little attention has been paid so far to its practicality when considering realistic ambient conditions or to the detection range. In this work we attempt to derive BVID detection thresholds for fibre Bragg grating-based sensors, by considering standardized temperature and vibration levels for aerospace applications. To the best of our knowledge this is the first practical threshold assessment for BVID detection on aerospace-grade CFRP for such sensors. We have put our detection thresholds to the test by analysing a total of 24 BVIDs on 12 panels made from 4 different CFRP material systems and derived commendable sizes for the detection range on the different material systems.
Date Issued
2021-03
Date Acceptance
2020-11-01
Citation
Composite Structures, 2021, 259, pp.1-12
ISSN
0263-8223
Publisher
Elsevier BV
Start Page
1
End Page
12
Journal / Book Title
Composite Structures
Volume
259
Copyright Statement
© 2020 The Authors. Published by Elsevier Ltd.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Sponsor
Clean Sky Joint Undertaking
Identifier
https://www.sciencedirect.com/science/article/pii/S026382232033169X?via%3Dihub
Grant Number
671435
Subjects
09 Engineering
Materials
Publication Status
Published online
Article Number
113243
Date Publish Online
2020-11-09