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| Presentation | 2021-02-22 16:25 Inverse wave analysis for crack opening displacement using sparse modeling Sohichi Hirose, Ayumi Wakita (Tokyo Tech)  US2020-73 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Sparse modeling has been applied to many inverse problems as an approximate method 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. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | inverse analysis / source identification / body force / crack opening displacement / 2D anti-plane wave / LASSO / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 377, US2020-73, pp. 35-38, Feb. 2021. | |
| Paper # | US2020-73 | |
| Date of Issue | 2021-02-15 (US) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2020-73 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2021-02-22 - 2021-02-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2021-02-US |
| Language | Japanese |
| 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 |
| Keyword(7) | |
| Keyword(8) | |
| 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) |
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| Speaker | Author-1 |
| Date Time | 2021-02-22 16:25:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2020-73 |
| Volume (vol) | vol.120 |
| Number (no) | no.377 |
| Page | pp.35-38 |
| #Pages | 4 |
| Date of Issue | 2021-02-15 (US) |
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