Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Kohji Kariya"'
Autor:
Norio KAWAGOISHI, Takanori NAGANO, Yuzo NAKAMURA, Kohji KARIYA, Ryu-ichi IWAMOTO, Yuji KOBAYASHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 90, Iss 938, Pp 24-00125-24-00125 (2024)
In order to investigate the effect of microstructure in the surface layer produced by shot peening on fatigue properties of a maraging steel, rotating bending fatigue tests were carried out using shot-peened specimens and electro-polished ones of a 3
Externí odkaz:
https://doaj.org/article/424afdf506514791a8368952734e713a
Autor:
Norio KAWAGOISHI, Takanori NAGANO, Yuzo NAKAMURA, Kohji KARIYA, Ryu-ichi IWAMOTO, Yuji KOBAYASHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 90, Iss 932, Pp 24-00007-24-00007 (2024)
The work affected layer of shot peened maraging steel was examined and fatigue properties of the steel were investigated under rotating bending in relative humidity of 25 % and 85 %. Shot peening produced a grain refinement in the surface layer with
Externí odkaz:
https://doaj.org/article/90e8a82501a544df9c160aee269f3253
Autor:
Norio KAWAGOISHI, Yuzo NAKAMURA, Kohji KARIYA, Kazuhiro MORINO, Takanori NAGANO, Kensaku YAMANE
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 890, Pp 20-00257-20-00257 (2020)
In order to investigate fatigue properties of 18%Ni maraging steel at elevated temperature, rotating bending fatigue tests were conducted for plain and drilled specimens at room temperature (RT) and 673K in air. The specimens involved single-aged one
Externí odkaz:
https://doaj.org/article/86d706a3b5da4912945dde147b6195e2
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 855, Pp 17-00273-17-00273 (2017)
There are many studies reported that a fatigue crack propagated in a tensile mode macroscopically and the fracture surface was mainly occupied by striations in many metals. Whereas, a unique fracture in which a crack propagated in a macroscopic shear
Externí odkaz:
https://doaj.org/article/60724a0b2e654c78b829f3c12e3889f5
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 855, Pp 17-00274-17-00274 (2017)
Fatigue cracks in some aluminum alloys propagate not in a typical tensile mode with striations but in a macroscopic shear direction with ductile facets under specific conditions. In the previous paper, it was shown that this unique propagation of a s
Externí odkaz:
https://doaj.org/article/a2eb2d11b88e4a5f8c6d672ebd736a08
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 81, Iss 825, Pp 15-00001-15-00001 (2015)
Fatigue properties of shot-peened high strength Al-Cu-Mg alloys, extruded and drawn 2017-T4 alloys, and effect of humidity on the properties were investigated in relative humidity environments of 25% and 85% under rotating bending. Fatigue strength w
Externí odkaz:
https://doaj.org/article/fbfba52a53054917ad7a737becbd72e2
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 81, Iss 825, Pp 14-00694-14-00694 (2015)
Effect of humidity on the growth mechanism of a fatigue crack in an age-hardened Al alloy was investigated in relative humidity environments of 25% and 85% at loading frequencies of 50Hz and 6Hz. Macroscopic growth mode of a crack in low humidity was
Externí odkaz:
https://doaj.org/article/ec4ad09acf97443d87836e18bfbb9f9d
Autor:
Yuzo Nakamura, Kensaku Yamane, Kohji Kariya, Norio Kawagoishi, Kazuhiro Morino, Takanori Nagano
Publikováno v:
Transactions of the JSME (in Japanese). 86:20-00257
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3123419c1ae5f5b5a55f831cec3199
https://doi.org/10.1299/transjsme.20-00257
https://doi.org/10.1299/transjsme.20-00257
Autor:
Ryuichi Iwamoto, Norio Kawagoishi, Yuzo Nakamura, Hiroki Kamibayashi, Kohji Kariya, Yuta Kurigeno
Publikováno v:
Materials Science Forum. 940:89-93
Observation of fracture surface in metal fatigue is one of the most significant procedures to get insight into the cause and mechanism of crack initiation and propagation. In the present study, age-hardened 2017-T4 and 7075-T6 Al alloys having the ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f35aedeb84ef80a27d1347561455fbe2
https://doi.org/10.4028/www.scientific.net/msf.940.89
https://doi.org/10.4028/www.scientific.net/msf.940.89
Publikováno v:
The Proceedings of the Materials and Mechanics Conference. 2022:OS0313
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7457a27bd1a1d2f326fcd30fe3ae5762
https://doi.org/10.1299/jsmemm.2022.os0313
https://doi.org/10.1299/jsmemm.2022.os0313