Výsledky vyhledávání - "Yasushi Morikage"

Fatigue crack deflection and branching behavior of low carbon steel under mechanically large grain condition

Autor: Tsunehisa Handa, Thao Phuong Bui, Tetsuya Tagawa, Yoshiharu Mutoh, Yasushi Morikage, Yukio Miyashita, Yuichi Otsuka

Publikováno v: International Journal of Fatigue. 148:106217

In situ SEM observation of fatigue crack growth behavior of low carbon steel under mechanically large grain condition, and EBSD analysis were carried out to investigate mechanisms of crack deflection and branching and effects of crystal orientation o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3d780488a30761a04c415b88151b617
https://doi.org/10.1016/j.ijfatigue.2021.106217

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Improvement mechanism of fatigue strength of weld joints by hammer peening on base metal

Autor: Tomo Hajime, Nakanishi Katsuyoshi, Satoshi Igi, Yasushi Morikage, Takashi Nakano

Publikováno v: Welding International. 31:531-537

New peening technology is proposed to improve the fatigue strength of welded joints. By using this technology, compressive residual stress is introduced at weld toe by the developed peening procedure which plastic deformation is only applied to the b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5972867fd113ecd4e944e94b779bc400
https://doi.org/10.1080/09507116.2016.1223219

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Experimental Proof of Reverse Bending Technique for Modifying Weld Residual Stress in Weld CTOD Specimen and Comparison of Effect with Other Techniques

Autor: Tetsuya Tagawa, Tsunehisa Handa, Yoshiki Mikami, Yasushi Morikage, Tomoya Kawabata, Takahiro Kubo

Publikováno v: Journal of Testing and Evaluation. 49:20200577

In fracture toughness testing of welds, weld residual stress often makes it difficult to obtain a straight precrack front. Therefore, BS 7448-2, Fracture Mechanics Toughness Tests. Method for Determination of KIc, Critical CTOD and Critical J Values

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86a97717a1a429540a1e55163f6f5bd9
https://doi.org/10.1520/jte20200577

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Effect of Compressive Residual Stress on Fatigue Crack Propagation

Autor: Kenji Oi, Yasushi Morikage, Satoshi Igi, Y. Jo, Koji Gotoh, Koji Murakami

Publikováno v: Procedia Engineering. 130:1057-1065

Fatigue failures have sometimes taken place in weld joints due to stress concentration and tensile residual stress at the weld toe. Therefore managements of fatigue crack initiation and propagation contribute to the enhancement of the fatigue life of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eb34913ebb47df0019fa307bd135653
https://doi.org/10.1016/j.proeng.2015.12.263

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Fatigue improvement in high-strength steel welded joints with compressive residual stress

Autor: Ei-Ichi Murakawa, Chiaki Shiga, Kazuo Hiraoka, Uusuke Ohsuga, Koichi Yasuda, Yuki Matsuo, Yasushi Morikage

Publikováno v: Welding in the World. 58:55-64

In order to improve fatigue properties of gusset fillet welded joints in high-strength steels, intensification of compressive residual stress around the weld toe was studied using computer simulations of welded joints with low transformation temperat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff5dbc19f8f0a4fd10d84953ad1a9a33
https://doi.org/10.1007/s40194-013-0093-8

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Fracture control of extremely thick welded steel plates applied to the deck structure of large container ships

Autor: Kazuhiro Hirota, Masahiro Toyosada, Yoichi Sumi, Masanobu Toyoda, Toshiyuki Matsumoto, Koji Gotoh, Hideyuki Hirasawa, Takao Yoshikawa, Yoshitaka Ogawa, Shuji Aihara, Yasushi Morikage, Hiroshi Yajima

Publikováno v: Journal of Marine Science and Technology. 18:497-514

The rapid enlargement of the size of container ships has led to the application of extremely thick plate in the deck structures, which may grow concerns about the fracture toughness at the butt-weld with large amount of heat input, and the arrest tou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c52570cd2d5c9a9a147c3895227cd252
https://doi.org/10.1007/s00773-013-0222-5

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