Development of Time-Reversal Method for Impact Source Identification on Plate Structures
This paper presents a detailed study on the impact source identification of a plate structure using time-reversal (T-R) method. Prior to impact monitoring, the plate is calibrated (or characterized) by transfer functions at discrete locations on the plate surface. Both impact location and impact loa...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.3233/SAV-130768 |
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| _version_ | 1850158130611093504 |
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| author | Chunlin Chen Yulong Li Fuh-Gwo Yuan |
| author_facet | Chunlin Chen Yulong Li Fuh-Gwo Yuan |
| author_sort | Chunlin Chen |
| collection | DOAJ |
| description | This paper presents a detailed study on the impact source identification of a plate structure using time-reversal (T-R) method. Prior to impact monitoring, the plate is calibrated (or characterized) by transfer functions at discrete locations on the plate surface. Both impact location and impact loading time-history are identified using T-R technique and associated signal processing algorithms. Numerical verification for finite-size isotropic plates under low velocity impacts is performed to demonstrate the versatility of T-R method for impact source identification. The tradeoff between accuracy of the impact location detection and calibration spacing is studied in detail. In particular, the effect of plate thickness on calibration spacing has been examined. A number of parameters selected for determining the impact location, approximated transfer functions and steps taken for reconstructing the impact loading time-history are also examined. Two types of noise with various intensities contaminated in strain response and/or transfer functions are investigated for demonstrating the stability and reliability of the T-R method. The results show that T-R method is robust against noise in impact location detection and force reconstruction in circumventing the inherent ill-conditioned inverse problem. Only transfer functions are needed to be calibrated and four sensors are requested in T-R method for impact identification. |
| format | Article |
| id | doaj-art-6adcfd4e3aa04fbd822b41ab2b83ac14 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-6adcfd4e3aa04fbd822b41ab2b83ac142025-08-20T02:23:59ZengWileyShock and Vibration1070-96221875-92032013-01-0120356157310.3233/SAV-130768Development of Time-Reversal Method for Impact Source Identification on Plate StructuresChunlin Chen0Yulong Li1Fuh-Gwo Yuan2School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, ChinaDepartment of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USAThis paper presents a detailed study on the impact source identification of a plate structure using time-reversal (T-R) method. Prior to impact monitoring, the plate is calibrated (or characterized) by transfer functions at discrete locations on the plate surface. Both impact location and impact loading time-history are identified using T-R technique and associated signal processing algorithms. Numerical verification for finite-size isotropic plates under low velocity impacts is performed to demonstrate the versatility of T-R method for impact source identification. The tradeoff between accuracy of the impact location detection and calibration spacing is studied in detail. In particular, the effect of plate thickness on calibration spacing has been examined. A number of parameters selected for determining the impact location, approximated transfer functions and steps taken for reconstructing the impact loading time-history are also examined. Two types of noise with various intensities contaminated in strain response and/or transfer functions are investigated for demonstrating the stability and reliability of the T-R method. The results show that T-R method is robust against noise in impact location detection and force reconstruction in circumventing the inherent ill-conditioned inverse problem. Only transfer functions are needed to be calibrated and four sensors are requested in T-R method for impact identification.http://dx.doi.org/10.3233/SAV-130768 |
| spellingShingle | Chunlin Chen Yulong Li Fuh-Gwo Yuan Development of Time-Reversal Method for Impact Source Identification on Plate Structures Shock and Vibration |
| title | Development of Time-Reversal Method for Impact Source Identification on Plate Structures |
| title_full | Development of Time-Reversal Method for Impact Source Identification on Plate Structures |
| title_fullStr | Development of Time-Reversal Method for Impact Source Identification on Plate Structures |
| title_full_unstemmed | Development of Time-Reversal Method for Impact Source Identification on Plate Structures |
| title_short | Development of Time-Reversal Method for Impact Source Identification on Plate Structures |
| title_sort | development of time reversal method for impact source identification on plate structures |
| url | http://dx.doi.org/10.3233/SAV-130768 |
| work_keys_str_mv | AT chunlinchen developmentoftimereversalmethodforimpactsourceidentificationonplatestructures AT yulongli developmentoftimereversalmethodforimpactsourceidentificationonplatestructures AT fuhgwoyuan developmentoftimereversalmethodforimpactsourceidentificationonplatestructures |