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Practicalities of BVID detection on aerospace-grade CFRP materials with optical fibre sensors

Tijdschriftbijdrage - Tijdschriftartikel

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, lithe 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.
Tijdschrift: Compos Struct
ISSN: 0263-8223
Volume: 259
Pagina's: 1-12
Jaar van publicatie:2021
Trefwoorden:BRAGG GRATING SENSORS; LOW-VELOCITY IMPACT; COMPOSITE STIFFENED PANEL; FBG SENSORS; LOCALIZATION; DAMAGE; SIGNALS; SYSTEM; DECAY
BOF-keylabel:ja
IOF-keylabel:ja
BOF-publication weight:6
Auteurs:International
Authors from:Government, Higher Education
Toegankelijkheid:Open