| Presentation | 2021-02-22 Inverse wave analysis for crack opening displacement using sparse modeling Sohichi Hirose, Ayumi Wakita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Sparse modeling has been applied to many inverse problems as an approximatemethod to solve an equation with sparsely distributed solutions. In this study, the sparse modeling analysis is applied to source identification problems in two dimensional steady state anti-plane wave field. Both body forces and crack opening displacements are considered as wave sources. In numerical simulation, it is shown that both wave sources are reconstructed well from wave fields calculated at several points near the sources. In case of the crack problem, it is found that not only the location and magnitude of the crack opening displacement but also the crack orientation can be determined from the moment tensor obtained in the inversion. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | inverse analysis / source identification / body force / crack opening displacement / 2D anti-plane wave / LASSO |
| Paper # | US2020-73 |
| Date of Issue | 2021-02-15 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2021/2/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hikaru Miura(Nihon Univ.) |
| Vice Chair | Jun Kondo(Shizuoka Univ.) / Yoshikazu Koike(Shibaura Inst. of Tech.) |
| Secretary | Jun Kondo(Doshisha Univ.) / Yoshikazu Koike(Tohoku Univ.) |
| Assistant | Shinnosuke Hirata(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Inverse wave analysis for crack opening displacement using sparse modeling |
| Sub Title (in English) | |
| Keyword(1) | inverse analysis |
| Keyword(2) | source identification |
| Keyword(3) | body force |
| Keyword(4) | crack opening displacement |
| Keyword(5) | 2D anti-plane wave |
| Keyword(6) | LASSO |
| 1st Author's Name | Sohichi Hirose |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 2nd Author's Name | Ayumi Wakita |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| Date | 2021-02-22 |
| Paper # | US2020-73 |
| Volume (vol) | vol.120 |
| Number (no) | US-377 |
| Page | pp.pp.35-38(US), |
| #Pages | 4 |
| Date of Issue | 2021-02-15 (US) |