Koei Takena
Railway Technical Research Institute
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Publication
Featured researches published by Koei Takena.
Quarterly Journal of The Japan Welding Society | 1986
Chitoshi Miki; Takeshi Mori; Toshimi Sasaki; Koei Takena; Kenji Sakamoto
The purpose of this study is to make clear the influence of the weld surface irregularity induced by the weld stop-start operation on the fatigue strength of longitudinal fillet welded joint. The materials used are 500 MPa and 600 MPa class steels. Weldings are done by manual arc processes and weld stop-start operations are carried out as leaving or filling the crater. The specimen is a flat plate with 16 mm thick and 60 mm wide. After the weld surface irregularities are measured, the specimens are tested under axial cyclic loadings. Then, the fatigue crack initiation and propagation behavior is closely observed. The test results indicate that the weld stop-start operation as filling the crater is preferable with respect to the fatigue strength.
Journal of Structural Engineering-asce | 1992
Koei Takena; Chitoshi Miki; Hirosuke Shimokawa; Kenji Sakamoto
Proceedings of the Japan Society of Civil Engineers | 1984
Jiro Tajima; Koei Takena; Chitoshi Miki; Fumio Ito
Doboku Gakkai Ronbunshu | 1984
Hirosuke Shimokawa; Koei Takena; Makoto Fukazawa; Chitoshi Miki
Proceedings of the Japan Society of Civil Engineers | 1983
Chitoshi Miki; Fumio Nishino; Yasuaki Hirabayashi; Koei Takena
Doboku Gakkai Ronbunshu | 1986
Koei Takena; Hirosuke Shimokawa; Fumio Itoh; Chitoshi Miki
Journal of Structural Engineering-asce | 1995
Kazuo Hasegawa; Hiroshi Kojima; Michio Sasaki; Koei Takena
Doboku Gakkai Ronbunshu | 1985
Hirosuke Shimokawa; Koei Takena; Fumio Itoh; Chitoshi Miki
Journal of Structural Engineering-asce | 1992
Koei Takena; Michio Sasaki; Kouichi Hata; Kazuo Hasegawa
Doboku Gakkai Ronbunshu | 1989
Kazuo Hasegawa; Hiroshi Kojima; Michio Sasaki; Koei Takena
