Low velocity impact localization on composite wing structure using error outlier based algorithm and FBG sensors

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In this paper, localization of low velocity impacts was conducted on a composite wing structure using an error outlier based impact localization algorithm. Composite wing impact monitoring was performed using multiplexed FBG sensors attached to the upper surface of the wing and a high speed interrogator was used to sample the impact response signals at a frequency of 100 kHz. The error threshold parameter and Number of Additional Outliers parameter were found to have a significant effect on the localization performance of the error outlier based impact localization algorithm. Furthermore, the present research shows that, for complex composite structures, a lower error threshold is required than those required for the simple composite plate case. Additionally, using an error outlier with a limited number of selected location 'k' based impact localization algorithm, with increasing Number of Additional Outliers parameter, improves the overall localization performance. The error outlier with a limited number of selected location 'k' based impact localization algorithm successfully localized low velocity impacts on the wing structure with an average localization error of 7.8 mm and a maximum localization error of 24.6 mm. (C) 2016 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2017-05
Language
English
Article Type
Article
Keywords

WAVE-PROPAGATION; DAMAGE; IDENTIFICATION; PLATE; SIGNALS; ARRAY

Citation

COMPOSITES PART B-ENGINEERING, v.116, pp.298 - 312

ISSN
1359-8368
DOI
10.1016/j.compositesb.2016.10.068
URI
http://hdl.handle.net/10203/224085
Appears in Collection
AE-Journal Papers(저널논문)
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