Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration
In 2-dimension (2D), a frequency-domain reverse time migration (FRTM) based on the optimal 9-point finite difference method (FDM) is introduced into the field of ultrasonic non-destructive testing (NDT). This study solves the challenge that conventional ultrasound imaging methods are difficult to im...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9807288/ |
| _version_ | 1811237822718279680 |
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| author | Congcong Wang Kun Wang Jing Zhu Dexiu Dong Junjie Chang |
| author_facet | Congcong Wang Kun Wang Jing Zhu Dexiu Dong Junjie Chang |
| author_sort | Congcong Wang |
| collection | DOAJ |
| description | In 2-dimension (2D), a frequency-domain reverse time migration (FRTM) based on the optimal 9-point finite difference method (FDM) is introduced into the field of ultrasonic non-destructive testing (NDT). This study solves the challenge that conventional ultrasound imaging methods are difficult to image defects completely. In numerical investigations, the use of multiple reflection waves and the necessity of bottom identification are explained. In actual inspection, the method of bottom identification is given, and then the bottom opening crack (BOC) of different lengths in the aluminum block can be completely imaged. Furthermore, the conventional total focusing method (TFM) cannot image the sides of the BOCs using the same data as FRTM. Therefore, the quantitative analysis of BOC based on the complete imaging results of FRTM is more convincing. On this basis, the optimization methods for the number of grid points placed at each wavelength and the frequency calculation range are also given. On the premise of ensuring high image quality, the imaging computation time is reduced to 1/18 of the original, which improves the computing efficiency of the FRTM. |
| first_indexed | 2024-04-12T12:29:51Z |
| format | Article |
| id | doaj.art-82215f2c60e546b5ad03c66489c7ed27 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T12:29:51Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-82215f2c60e546b5ad03c66489c7ed272022-12-22T03:33:03ZengIEEEIEEE Access2169-35362022-01-0110682026821210.1109/ACCESS.2022.31863029807288Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time MigrationCongcong Wang0https://orcid.org/0000-0001-7643-5367Kun Wang1https://orcid.org/0000-0001-5862-122XJing Zhu2Dexiu Dong3Junjie Chang4Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, ChinaTokyo Institute of Technology, Tokyo, JapanResearch Center for Humanoid Sensing, Zhejiang Lab, Hangzhou, ChinaAECC Shenyang Liming Aero-Engine Company Ltd., Shenyang, ChinaKey Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, ChinaIn 2-dimension (2D), a frequency-domain reverse time migration (FRTM) based on the optimal 9-point finite difference method (FDM) is introduced into the field of ultrasonic non-destructive testing (NDT). This study solves the challenge that conventional ultrasound imaging methods are difficult to image defects completely. In numerical investigations, the use of multiple reflection waves and the necessity of bottom identification are explained. In actual inspection, the method of bottom identification is given, and then the bottom opening crack (BOC) of different lengths in the aluminum block can be completely imaged. Furthermore, the conventional total focusing method (TFM) cannot image the sides of the BOCs using the same data as FRTM. Therefore, the quantitative analysis of BOC based on the complete imaging results of FRTM is more convincing. On this basis, the optimization methods for the number of grid points placed at each wavelength and the frequency calculation range are also given. On the premise of ensuring high image quality, the imaging computation time is reduced to 1/18 of the original, which improves the computing efficiency of the FRTM.https://ieeexplore.ieee.org/document/9807288/Frequency-domainreverse time migrationbottom identificationquantitative analysisimage quality evaluation |
| spellingShingle | Congcong Wang Kun Wang Jing Zhu Dexiu Dong Junjie Chang Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration IEEE Access Frequency-domain reverse time migration bottom identification quantitative analysis image quality evaluation |
| title | Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration |
| title_full | Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration |
| title_fullStr | Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration |
| title_full_unstemmed | Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration |
| title_short | Ultrasound Imaging of Bottom Opening Crack Based on Frequency-Domain Reverse Time Migration |
| title_sort | ultrasound imaging of bottom opening crack based on frequency domain reverse time migration |
| topic | Frequency-domain reverse time migration bottom identification quantitative analysis image quality evaluation |
| url | https://ieeexplore.ieee.org/document/9807288/ |
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