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FBG array arrangement optimization for impact localization
A method to optimize the arrangement of an fiber Bragg grating (FBG) array is described to address the need to improve the accuracy of impact localization for aerospace vehicles. The sensitive area of the FBG, which is approximately elliptical, is analyzed using finite element simulation and experimental measurement. Based on this analysis, three optimized FBG sensing arrangements are proposed to improve the coverage of the FBG sensitive area at the center, located on the side and corner positions of an experimental test sample when subject to an impact. By employing the inverse problem analysis method in multiple repetitions of impact localization experiments, the accuracy of impact localization is improved from 74% with the traditional 4-corner arrangement to 84%, 88%, and 91% respectively for the three arrangements, demonstrating the effectiveness of the optimized FBG array arrangement method.
PublicationMeasurement Science and Technology, 2024, 35 (2), 025206
Other Funding informationThis work was supported in part by the National Natural Science Foundation of China (62005063); the Fundamental Research Funds of the Central (3072022JC2702); the National Key Research and Development Program of China (2021YFC2802202); Heilongjiang Natural Science Fund for Distinguished Young Scholars(JQ2022F001)
RightsThis is the Accepted Manuscript version of an article accepted for publication in Measurement Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/1361-6501/ad0b69.
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