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dc.contributor.author | Yasuda, Naotoshi | en |
dc.contributor.author | Misaki, Norikazu | en |
dc.contributor.author | Shimada, Yoshinori | en |
dc.contributor.author | Yamaoka, Daiki | en |
dc.contributor.alternative | 保田, 尚俊 | ja |
dc.date.accessioned | 2020-07-21T01:49:28Z | - |
dc.date.available | 2020-07-21T01:49:28Z | - |
dc.date.issued | 2020-09 | - |
dc.identifier.issn | 0886-7798 | - |
dc.identifier.uri | http://hdl.handle.net/2433/252795 | - |
dc.description.abstract | This paper proposes a method for detection and estimation of the characteristics of defects in concrete structures using laser ablation-induced vibration for non-contact structural inspection to prevent partial spalling. Two types of lasers are used: the first is an impact laser that is used to induce vibrations in the measurement target and the second is a detection laser that is used to measure these induced vibrations. Laboratory tests are performed using concrete specimens with and without an internal defect. The results show that the presence of a defect can be estimated from the occurrence of damped oscillations in the measurement data. The presence or absence of these damped oscillations can be determined using the least-squares complex frequency-domain (LSCF) method, which is a fast-stabilizing parameter estimation method for modal identification problems. Additionally, when a defect is present, the defect vibration characteristics, such as natural frequencies and damping ratios, can be estimated. In particular, the natural frequencies can be estimated accurately. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier BV | en |
dc.rights | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en |
dc.rights | The full-text file will be made open to the public on 1 September 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | Inspection method | en |
dc.subject | Laser ablation | en |
dc.subject | Concrete | en |
dc.subject | Vibration | en |
dc.subject | Modal identification | en |
dc.title | Detection and characteristics estimation of defects in concrete structures using laser ablation-induced vibration | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Tunnelling and Underground Space Technology | en |
dc.identifier.volume | 103 | - |
dc.relation.doi | 10.1016/j.tust.2020.103460 | - |
dc.textversion | author | - |
dc.identifier.artnum | 103460 | - |
dc.address | Department of Civil and Earth Resources Engineering, Kyoto University | en |
dc.address | West Japan Railway Company | en |
dc.address | Institute for Laser Technology, Osaka | en |
dc.address | Department of Civil and Earth Resources Engineering, Kyoto University | en |
dcterms.accessRights | open access | - |
datacite.date.available | 2022-09-01 | - |
出現コレクション: | 学術雑誌掲載論文等 |
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