Distance-Coefficient-Based Imaging Accuracy Improving Method Based on the Lamb Wave
An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal- to-noise ratio data from all experimental data and then to use these selected dat...
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Published in | Chinese physics letters Vol. 34; no. 4; pp. 55 - 59 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Chinese Physical Society and IOP Publishing Ltd
01.03.2017
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Online Access | Get full text |
ISSN | 0256-307X 1741-3540 |
DOI | 10.1088/0256-307X/34/4/044301 |
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Abstract | An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal- to-noise ratio data from all experimental data and then to use these selected data for elliptical imaging. Tile relationships among imaging accuracy, distance coefficient and residual direct wave are investigated, and then the residual direct wave is introduced to make the engineering application more convenient. The effectiveness of the proposed method is evaluated experimentally by sparse transducer array of a rectangle, and the results reveal that selecting experimental data of smaller distance coefficient can effectively improve imaging accuracy. Moreover, the direct wave difference increases with the decrease of the distance coefficient, which implies that the imaging accuracy can be effectively improved by using the experimental data of the larger direct wave difference. |
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AbstractList | An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal- to-noise ratio data from all experimental data and then to use these selected data for elliptical imaging. Tile relationships among imaging accuracy, distance coefficient and residual direct wave are investigated, and then the residual direct wave is introduced to make the engineering application more convenient. The effectiveness of the proposed method is evaluated experimentally by sparse transducer array of a rectangle, and the results reveal that selecting experimental data of smaller distance coefficient can effectively improve imaging accuracy. Moreover, the direct wave difference increases with the decrease of the distance coefficient, which implies that the imaging accuracy can be effectively improved by using the experimental data of the larger direct wave difference. An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal-to-noise ratio data from all experimental data and then to use these selected data for elliptical imaging. The relationships among imaging accuracy, distance coefficient and residual direct wave are investigated, and then the residual direct wave is introduced to make the engineering application more convenient. The effectiveness of the proposed method is evaluated experimentally by sparse transducer array of a rectangle, and the results reveal that selecting experimental data of smaller distance coefficient can effectively improve imaging accuracy. Moreover, the direct wave difference increases with the decrease of the distance coefficient, which implies that the imaging accuracy can be effectively improved by using the experimental data of the larger direct wave difference. |
Author | 陈少杰 周邵萍 李勇 项延训 戚敏新 |
AuthorAffiliation | Key Lab of Pressure Systems and Safety (MOE), East China University of Science and Technology, Shanghai 200237 |
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CitedBy_id | crossref_primary_10_7498_aps_68_20190101 crossref_primary_10_3390_s22041540 crossref_primary_10_1016_j_compstruct_2022_115506 crossref_primary_10_1088_1361_6501_ad329a crossref_primary_10_1177_1475921718772042 |
Cites_doi | 10.1088/0964-1726/17/3/035035 10.1016/j.ymssp.2015.09.022 10.1109/TUFFC.2010.1745 10.1299/jsmea.46.620 10.1016/j.wavemoti.2013.09.004 10.1016/j.compstruct.2015.07.089 10.1016/j.wavemoti.2007.02.008 10.1016/j.ymssp.2015.05.001 10.1177/1475921712462937 10.1121/1.3685482 10.1109/TUFFC.2010.1613 |
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Notes | An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal- to-noise ratio data from all experimental data and then to use these selected data for elliptical imaging. Tile relationships among imaging accuracy, distance coefficient and residual direct wave are investigated, and then the residual direct wave is introduced to make the engineering application more convenient. The effectiveness of the proposed method is evaluated experimentally by sparse transducer array of a rectangle, and the results reveal that selecting experimental data of smaller distance coefficient can effectively improve imaging accuracy. Moreover, the direct wave difference increases with the decrease of the distance coefficient, which implies that the imaging accuracy can be effectively improved by using the experimental data of the larger direct wave difference. Shao-Jie Chen, Shao-Ping Zhou, Yong Li, Yan-Xun Xiang, Min-Xin Qi( Key Lab of Pressure Systems and Safety (MOE), East China University of Science and Technology, Shanghai 200237) 11-1959/O4 |
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References | 11 12 13 Zhang H Y (1) 2016; 25 14 15 Jeong H (6) 2011; 28 17 Yu L (5) 2012; 22 Zhang H Y (3) 2010; 27 Hall J S (16) 2011 Li M L (2) 2016; 25 7 8 9 Michaels J E (4) 2008; 17 10 |
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Title | Distance-Coefficient-Based Imaging Accuracy Improving Method Based on the Lamb Wave |
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