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ファイル | 記述 | サイズ | フォーマット | |
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tetsutohagane.101.351.pdf | 1.73 MB | Adobe PDF | 見る/開く |
タイトル: | レーザ弾性波源走査法によるリモート損傷画像化システムの開発 |
その他のタイトル: | Development of a remote defect imaging system with the scanning laser source technique |
著者: | 福山, 美咲 林, 高弘 |
著者名の別形: | Fukuyama, Misaki Hayashi, Takahiro |
キーワード: | non-destructive inspection scanning laser source technique remote measurement optical detection |
発行日: | 2015 |
出版者: | 日本鉄鋼協会 |
誌名: | 鉄と鋼 |
巻: | 101 |
号: | 7 |
開始ページ: | 351 |
終了ページ: | 357 |
抄録: | Laser ultrasonics have been studying for many years as a promising technique for evaluating industrial materials. The non-contact technique, however, still have some problems in practical use for large structures such as pipes, tanks, bridges, etc. Authors have adopted the scanning laser source technique for imaging defects in a plate-like structure to solve one of the problems that elastic wave cannot be measured stably with laser interferometory due to the unstable detection of scattering light at rough and inclined surfaces of existing structures. In this study, a remote experimental system of the defect imaging technique with the scanning laser source, which does not require cables between receiving transducers and experimental equipments, was developed. In the experimental system, laser emission signal detected by a photo-detector was used as trigger signal that requires quick response for accurate measurements. The other data that does not require such quick responses were transffered with local area network (LAN) communications. Using the remote defect imaging system, we confrmed that defect images can be obtained clearly as the conventional cablewired experimental system was used. Moreover, we obtained defect images at the distances of 2.6 m and 7.6 m between the plate specimen and laser equipment. |
著作権等: | © 2015 一般社団法人 日本鉄鋼協会 日本鉄鋼協会の許可を得て登録しています. |
URI: | http://hdl.handle.net/2433/216565 |
DOI(出版社版): | 10.2355/tetsutohagane.101.351 |
出現コレクション: | 学術雑誌掲載論文等 |
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