Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2795
Title: Quantitative detection of low energy impact damage in a sandwich composite wing
Authors: Seaver, Mark
Aktaş, Engin
Trickey, Stephen T.
Aktaş, Engin
Izmir Institute of Technology. Civil Engineering
Keywords: Damage detection
Bicoherence
Fiber Bragg gratings (FBGs)
Sandwich composite
ROC curves
Issue Date: Feb-2010
Publisher: SAGE Publications Inc.
Source: Seaver, M., Aktaş, E., and Trickey, S. T. (2010). Quantitative detection of low energy impact damage in a sandwich composite wing. Journal of Intelligent Material Systems and Structures, 21(3), 297-308. doi:10.1177/1045389X09347020
Abstract: This work describes damage detection in a foam core composite wing (1320 mm × 152.4 mm × 13.4 mm) following a series of low energy impacts. Thirteen impacts (6-8 J deposited energy) were applied at adjacent locations approximately 1/4 of the way out from the wing center. Following every one or two impacts, the wing was tested using static tip deflection and dynamic vibrational excitation. Static and dynamic strains were measured using eight fiber Bragg grating sensors. Dynamic acceleration was also monitored using three conventional accelerometers. The estimated bicoherence was used to detect the presence of damage-induced non-linearity in time-series data recorded from each sensor. Receiver operating characteristic (ROC) curves were constructed for each sensor based on 15 or more dynamic measurements made for each damage case. The ROC curves provide a quantitative, statistical approach to evaluating the damage detection capabilities of the various sensors.
Description: 1st ASME Smart Materials, Adaptive Structurres and Intelligent Systems Symposium on Structural Health Monitoring, Ellicott City, MD, October 28-30. 2008
URI: http://doi.org/10.1177/1045389X09347020
http://hdl.handle.net/11147/2795
ISSN: 1045-389X
1045-389X
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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