FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems
Traditional ultrasonic imaging methods have a low accuracy in the localization of defects in austenitic welds because the anisotropy and inhomogeneity of the welds cause distortion of the ultrasonic wave propagation paths in anisotropic media. The distribution of the grain orientation in the welds i...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/19/8888 |
| _version_ | 1797516849618878464 |
|---|---|
| author | Seongin Moon To Kang Soonwoo Han Kyung-Mo Kim Hyung-Ha Jin Sung-Woo Kim Munsung Kim Hyunil Seo |
| author_facet | Seongin Moon To Kang Soonwoo Han Kyung-Mo Kim Hyung-Ha Jin Sung-Woo Kim Munsung Kim Hyunil Seo |
| author_sort | Seongin Moon |
| collection | DOAJ |
| description | Traditional ultrasonic imaging methods have a low accuracy in the localization of defects in austenitic welds because the anisotropy and inhomogeneity of the welds cause distortion of the ultrasonic wave propagation paths in anisotropic media. The distribution of the grain orientation in the welds influences the ultrasonic wave velocity and ultrasonic wave propagation paths. To overcome this issue, a finite element analysis (FEA)-based ultrasonic imaging methodology for austenitic welds is proposed in this study. The proposed ultrasonic imaging method uses a wave propagation database to synthetically focus the inter-element signal recorded with a phased array system using a delay-and-sum strategy. The wave propagation database was constructed using FEA considering the grain orientation distribution and the anisotropic elastic constants in the welds. The grain orientation was extracted from a macrograph obtained from a dissimilar metal weld specimen, after which the elastic constants were optimized using FEA with grain orientation information. FEA was performed to calculate a full matrix of time-domain signals for all combinations of the transmitting and receiving elements in the phased array system. The proposed approach was assessed for an FEA-based simulated model embedded in a defect. The simulation results proved that the newly proposed ultrasonic imaging method can be used for defect localization in austenitic welds. |
| first_indexed | 2024-03-10T07:06:37Z |
| format | Article |
| id | doaj.art-5135b16b376a44dcad8ce761ec9a5106 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T07:06:37Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-5135b16b376a44dcad8ce761ec9a51062023-11-22T15:44:30ZengMDPI AGApplied Sciences2076-34172021-09-011119888810.3390/app11198888FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array SystemsSeongin Moon0To Kang1Soonwoo Han2Kyung-Mo Kim3Hyung-Ha Jin4Sung-Woo Kim5Munsung Kim6Hyunil Seo7Korea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaDassault Systemes Korea Corp., Seoul 06164, KoreaQuantumsoft, Daejeon 34054, KoreaTraditional ultrasonic imaging methods have a low accuracy in the localization of defects in austenitic welds because the anisotropy and inhomogeneity of the welds cause distortion of the ultrasonic wave propagation paths in anisotropic media. The distribution of the grain orientation in the welds influences the ultrasonic wave velocity and ultrasonic wave propagation paths. To overcome this issue, a finite element analysis (FEA)-based ultrasonic imaging methodology for austenitic welds is proposed in this study. The proposed ultrasonic imaging method uses a wave propagation database to synthetically focus the inter-element signal recorded with a phased array system using a delay-and-sum strategy. The wave propagation database was constructed using FEA considering the grain orientation distribution and the anisotropic elastic constants in the welds. The grain orientation was extracted from a macrograph obtained from a dissimilar metal weld specimen, after which the elastic constants were optimized using FEA with grain orientation information. FEA was performed to calculate a full matrix of time-domain signals for all combinations of the transmitting and receiving elements in the phased array system. The proposed approach was assessed for an FEA-based simulated model embedded in a defect. The simulation results proved that the newly proposed ultrasonic imaging method can be used for defect localization in austenitic welds.https://www.mdpi.com/2076-3417/11/19/8888austenitic weldsfinite element analysisultrasonic wavephased array |
| spellingShingle | Seongin Moon To Kang Soonwoo Han Kyung-Mo Kim Hyung-Ha Jin Sung-Woo Kim Munsung Kim Hyunil Seo FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems Applied Sciences austenitic welds finite element analysis ultrasonic wave phased array |
| title | FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems |
| title_full | FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems |
| title_fullStr | FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems |
| title_full_unstemmed | FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems |
| title_short | FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems |
| title_sort | fea based ultrasonic focusing method in anisotropic media for phased array systems |
| topic | austenitic welds finite element analysis ultrasonic wave phased array |
| url | https://www.mdpi.com/2076-3417/11/19/8888 |
| work_keys_str_mv | AT seonginmoon feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT tokang feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT soonwoohan feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT kyungmokim feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT hyunghajin feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT sungwookim feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT munsungkim feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems AT hyunilseo feabasedultrasonicfocusingmethodinanisotropicmediaforphasedarraysystems |