期刊
COMPOSITE STRUCTURES
卷 142, 期 -, 页码 263-271出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2016.01.088
关键词
Composite; FBG; Impact localization; Outlier; Reference database method; SHM
资金
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MI, Korea) [10047457]
- Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [2011-0030065]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10047457] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Structural health monitoring of composite structures is essential for timely detection and localization of low velocity impacts. In this paper, a novel method for localizing impacts using an error outlier based impact localization algorithm is proposed. The outlier method for impact localization was developed and implemented by localizing several impact points on a quasi-isotropic composite structure. Multiplexed FBG sensors were attached to the composite structure to monitor low velocity impacts, sampled at a frequency of 100 kHz using a high speed FBG interrogator. Localization results for the error outlier based localization method were compared with the RMS and correlation based impact localization results. The novel localization technique presented in this paper demonstrates an effective means of estimating impact locations. Furthermore, overall improvement in the localization performance was obtained using the outlier based impact localization algorithm: impact points on the composite plate were localized with an average error of 10.7 mm. (c) 2016 Elsevier Ltd. All rights reserved.
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