更新情報
第10回
レーザピーニングによる低圧タービン動翼の疲労強度改善
著者:
千田 格,Itaru CHIDA,佐野 雄二,Yuji SANO,廣田 圭一,Keiichi HIROTA,犬飼 隆夫,Takao INUKAI,角谷 利恵,Rie SUMIYA,佐々木 英寿,Hidekazu SASAKI,野村 光,Hiroshi NOMURA
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キーワードタグ:
Cr stainless steel Fatigue Laser peening Residual stress Turbine blade
千田 格,Itaru CHIDA,佐野 雄二,Yuji SANO,廣田 圭一,Keiichi HIROTA,犬飼 隆夫,Takao INUKAI,角谷 利恵,Rie SUMIYA,佐々木 英寿,Hidekazu SASAKI,野村 光,Hiroshi NOMURA
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キーワードタグ:
Cr stainless steel Fatigue Laser peening Residual stress Turbine blade
Some damages were found at the forks of low pressure turbine blades caused by random vibration and steam-flashback vibration. In this study, for the aim of fatigue property improvement, laser peening technology for 12Cr stainless steel was developed and material properties were examined. Laser peening is a process to induce compressive residual stress to the material surface. Fatigue specimens which simulate the stress concentration zone of forks were fabricated and laser peening was applied to the su...
英字タイトル:
Development of laser peening technology for low pressure turbine blades to improve fatigue properties
英字タイトル:
Development of laser peening technology for low pressure turbine blades to improve fatigue properties
論文
原子炉底部管台向け渦電流探傷システムの開発
著者:
小林 徳康,Noriyasu KOBAYASHI,上野 聡一,Souichi UENO,千田 格,Itaru CHIDA,落合 誠,Makoto OCHIAI,藤田 友基,Tomoki FUJITA,市川 博也,Hiroya ICHIKAWA
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公開日:
キーワードタグ:
Bottom-mounted instrumentation BWR Eddy current testing PWR Stress corrosion cracking
小林 徳康,Noriyasu KOBAYASHI,上野 聡一,Souichi UENO,千田 格,Itaru CHIDA,落合 誠,Makoto OCHIAI,藤田 友基,Tomoki FUJITA,市川 博也,Hiroya ICHIKAWA
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公開日:
キーワードタグ:
Bottom-mounted instrumentation BWR Eddy current testing PWR Stress corrosion cracking
We confirmed the defect detection performance of the eddy current testing (ECT) system in order to inspect the bottom-mounted instrumentation (BMI) nozzle in reactor pressure vessel. We developed the small size cross coil type ECT sensor that has the magnetic cores near the coils and the sensor scanning equipment based on the portable laser peening system. According to the experimental results that measured the sensitivity for the defects on the concave specimen and the relationship between the senso...
英字タイトル:
Development of Eddy Current Testing System for Bottom-Mounted Instrumentation Nozzle in Reactor Pressure Vessel
英字タイトル:
Development of Eddy Current Testing System for Bottom-Mounted Instrumentation Nozzle in Reactor Pressure Vessel
第10回
原子炉底部管台向け渦電流探傷システムの開発
著者:
芝 小林,小林 徳康,Noriyasu KOBAYASHI,芝 上野,上野 聡一,Souichi UENO,芝 千田,千田 格,Itaru CHIDA,芝 落合,落合 誠,Makoto OCHIAI,芝 藤田,藤田 友基,Tomoki FUJITA,芝 市川,市川 博也,Hiroya ICHIKAWA
発刊日:
公開日:
キーワードタグ:
Bottom-mounted instrumentation BWR Eddy current testing PWR Stress corrosion cracking
芝 小林,小林 徳康,Noriyasu KOBAYASHI,芝 上野,上野 聡一,Souichi UENO,芝 千田,千田 格,Itaru CHIDA,芝 落合,落合 誠,Makoto OCHIAI,芝 藤田,藤田 友基,Tomoki FUJITA,芝 市川,市川 博也,Hiroya ICHIKAWA
発刊日:
公開日:
キーワードタグ:
Bottom-mounted instrumentation BWR Eddy current testing PWR Stress corrosion cracking
We confirmed the defect detection performance of the eddy current testing (ECT) system in order to inspect the bottom-Mounted instrumentation (BMI) nozzle in reactor pressure vessel. We developed the small size cross coil type ECT sensor that has the magnetic cores near the coils and the sensor driving unit based on the portable laser peening system. According to the experimental result that measured the relationship between the sensor inclined angle and defect detecting sensitivity on the convex surfa...
英字タイトル:
Development of Eddy Current Testing System for Bottom-Mounted Instrumentation Nozzle in Reactor Pressure Vessel
英字タイトル:
Development of Eddy Current Testing System for Bottom-Mounted Instrumentation Nozzle in Reactor Pressure Vessel
第5回
多機能レーザ溶接ヘッドの開発(第1報)-水中レーザ溶接の基本特性評価-
著者:
河野 渉,Wataru KONO,千田 格,Itaru CHIDA,三浦 崇広,Takahiro MIURA,依田 正樹,Masaki YODA,牧野 吉延,Yoshinobu MAKINO,日野 武久,Takehisa HINO
発刊日:
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Clad weld Preventive maintenance Repair Seal weld Under water laser welding
河野 渉,Wataru KONO,千田 格,Itaru CHIDA,三浦 崇広,Takahiro MIURA,依田 正樹,Masaki YODA,牧野 吉延,Yoshinobu MAKINO,日野 武久,Takehisa HINO
発刊日:
公開日:
キーワードタグ:
Clad weld Preventive maintenance Repair Seal weld Under water laser welding
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventi ve maintenance and laser ultrasonic testing as inspection. Laser transmission test with multifunction laser welding head and optical fiber was carried out. The result showed that laser power needed for welding was transmitted without any damage to them. Under water laser welding onto EDM slits with this welding head w as carried out. EDM slits were...
英字タイトル:
Development of Multifunction Laser Welding Head (1) - Evaluation of Under Water Laser Welding with Multifunction Laser Welding Head -
英字タイトル:
Development of Multifunction Laser Welding Head (1) - Evaluation of Under Water Laser Welding with Multifunction Laser Welding Head -
第5回
多機能レーザ溶接ヘッドの開発(第2報)-レーザピーニングによる応力改善性評価-
著者:
千田 格,Itaru CHIDA,河野 渉,Wataru KONO,三浦 崇広,Takahiro MIURA,向井 成彦,Naruhiko MUKAI,依田 正樹,Masaki YODA
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Laser peening Preventive maintenance Repair Stress corrosion cracking (SCC)
千田 格,Itaru CHIDA,河野 渉,Wataru KONO,三浦 崇広,Takahiro MIURA,向井 成彦,Naruhiko MUKAI,依田 正樹,Masaki YODA
発刊日:
公開日:
キーワードタグ:
Laser peening Preventive maintenance Repair Stress corrosion cracking (SCC)
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventive maintenance and laser ultrasonic testing as inspection. By using the effect of color aberration with optics, laser beam was focused to the ideal spot size on each process. Laser p eening was performed on the material surface with the developed head, and stress improvement ability was confirmed....
英字タイトル:
Development of Multifunction Laser Welding Head (2) - Stress Improvement by Laser Peening Technology -
英字タイトル:
Development of Multifunction Laser Welding Head (2) - Stress Improvement by Laser Peening Technology -
第5回
多機能レーザ溶接ヘッドの開発(第3報)-レーザ超音波法による表面検査技術の開発-
著者:
三浦 崇広,Takahiro MIURA,河野 渉,Wataru KONO,千田 格,Itaru CHIDA,吉田 昌弘,Masahiro YOSHIDA,山本 智,Satoshi YAMAMOTO,依田 正樹,Masaki YODA,落合 誠,Makoto OCHIAI
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Laser-ultrasonics Penetrant Testing Preventive maintenance SAFT Weld Defect
三浦 崇広,Takahiro MIURA,河野 渉,Wataru KONO,千田 格,Itaru CHIDA,吉田 昌弘,Masahiro YOSHIDA,山本 智,Satoshi YAMAMOTO,依田 正樹,Masaki YODA,落合 誠,Makoto OCHIAI
発刊日:
公開日:
キーワードタグ:
Laser-ultrasonics Penetrant Testing Preventive maintenance SAFT Weld Defect
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventive maintenance and laser ultrasonic test ing as inspection. For inspection with multifunction laser welding head, a new method of visualized weld defects in water by laser-ultrasonics has developed. To detect and visualize a surface of weld metal with welding bead, the authors have developed a new detection method by leaky wave induced by interactio...
英字タイトル:
Development of Multifunction Laser Welding Head (3) - Surface Inspection Technique by Laser-ultrasonics -
英字タイトル:
Development of Multifunction Laser Welding Head (3) - Surface Inspection Technique by Laser-ultrasonics -
第8回
水中レーザ溶接装置の開発
著者:
徳永 泰明,Yasuaki TOKUNAGA,千田 格,Itaru CHIDA,椎原 克典,Katsunori SHIIHARA,田村 雅貴,Masataka TAMURA,福田 健,Takeshi FUKUDA,前原 剛,Takeshi MAEHARA,依田 正樹,Masaki YODA
発刊日:
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PWR Underwater Laser Beam Welding
徳永 泰明,Yasuaki TOKUNAGA,千田 格,Itaru CHIDA,椎原 克典,Katsunori SHIIHARA,田村 雅貴,Masataka TAMURA,福田 健,Takeshi FUKUDA,前原 剛,Takeshi MAEHARA,依田 正樹,Masaki YODA
発刊日:
公開日:
キーワードタグ:
PWR Underwater Laser Beam Welding
Toshiba has developed various laser-based maintenance and repair technologies and already applied to nuclear power plants. Laser beam welding technology has been developed as an SCC cou ntermeasure for aged components in PWRs and BWRs. This technology can also be used underwater by blowing shielding gas for creating a local dry area. This welding equipment has damage d etecting function of optical elements such as windows and optical fiber cables, and the laser beam spot position and diameter can be adjust...
英字タイトル:
Development of Underwater Laser Beam Welding Equipment
英字タイトル:
Development of Underwater Laser Beam Welding Equipment