Zobrazeno 1 - 10
of 234
pro vyhledávání: '"Takao Utsunomiya"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 881, Pp 19-00203-19-00203 (2019)
A strain measurement system based on astable multivibrator using CMOS inverter has been developed. This system could omit an amplifier, filter and A/D converter unlike conventional Wheatstone bridge type sensor, because strain is measured by counting
Externí odkaz:
https://doaj.org/article/9a8e08414adb4508b2c790f5d05b68db
Publikováno v:
Materials, Vol 8, Iss 10, Pp 7161-7168 (2015)
Recently, to further improve the performance of aluminum foam, functionally graded (FG) aluminum foams, whose pore structure varies with their position, have been developed. In this study, three types of FG aluminum foam of aluminum alloy die casting
Externí odkaz:
https://doaj.org/article/e533978990ff4451a261d78f0d33b36a
Autor:
Yoshihiko Hangai, Masaki Saito, Takao Utsunomiya, Soichiro Kitahara, Osamu Kuwazuru, Nobuhiro Yoshikawa
Publikováno v:
Materials, Vol 7, Iss 9, Pp 6796-6810 (2014)
Aluminum foam has received considerable attention in various fields and is expected to be used as an engineering material owing to its high energy absorption properties and light weight. To improve the mechanical properties of aluminum foam, combinin
Externí odkaz:
https://doaj.org/article/366803d0987d49fc8878d2dd3ab9c49d
Autor:
Yoshihiko Hangai, Hiroto Kamada, Takao Utsunomiya, Soichiro Kitahara, Osamu Kuwazuru, Nobuhiro Yoshikawa
Publikováno v:
Materials, Vol 7, Iss 3, Pp 2382-2394 (2014)
Al foam has been used in a wide range of applications owing to its light weight, high energy absorption and high sound insulation. One of the promising processes for fabricating Al foam involves the use of a foamable precursor. In this study, ADC12 A
Externí odkaz:
https://doaj.org/article/2ccccc5dc1c74c62a6f27ecd804c11d7
Autor:
Yoshihiko Hangai, Ryohei Nagahiro, Masataka Ohashi, Kenji Amagai, Takao Utsunomiya, Nobuhiro Yoshikawa
Publikováno v:
Metals, Vol 9, Iss 2, p 223 (2019)
In this study, steel meshes with various opening ratios φ were used to shape aluminum foams during precursor foaming. The effect of φ on the heating rate and shape of the obtained aluminum foams was investigated. It was found that steel meshes with
Externí odkaz:
https://doaj.org/article/fb130548aa1d460e9f2577e40e893ba6
Publikováno v:
Mechanical Engineering Journal, Vol 3, Iss 6, Pp 16-00149-16-00149 (2016)
The plateau stress of aluminum (Al) foam is an important mechanical parameter that is closely related to its energy absorptivity. An estimation method for plateau stress was proposed by simply assuming that when the mean true compressive stress on a
Externí odkaz:
https://doaj.org/article/fd63776ea4ef42e89ee9ce0b45fce6d3
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 81, Iss 830, Pp 15-00269-15-00269 (2015)
The strain measurement system using a CMOS inverter oscillator circuit is simple and can be omit an amplifier because a counting device measures frequency changes of circuit voltage output caused by resistance changes of a strain gauge. Moreover, the
Externí odkaz:
https://doaj.org/article/5db9284df5574b27835cfec877f8098e
Publikováno v:
Journal of Materials Engineering and Performance.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7d71c4d1b9a1e83afe272239456df2d
https://doi.org/10.1007/s11665-023-07906-5
https://doi.org/10.1007/s11665-023-07906-5
Autor:
Ryosuke Suzuki, Takao Utsunomiya, Nobuhiro Yoshikawa, Masaaki Matsubara, Yoshihiko Hangai, Mizuki Ando
Publikováno v:
Journal of the Japan Institute of Metals and Materials. 85:84-87
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abd54e0446d6a2c3f35257269e1a7554
https://doi.org/10.2320/jinstmet.j2020044
https://doi.org/10.2320/jinstmet.j2020044
Autor:
Masataka Ohashi, Ryosuke Suzuki, Takao Utsunomiya, Kenji Amagai, Yoshihiko Hangai, Nobuhiro Yoshikawa, Masaaki Matsubara
Publikováno v:
Journal of Japan Institute of Light Metals. 70:517-522
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9492caee62df0a2144df5ae34c84fac3
https://doi.org/10.2464/jilm.70.517
https://doi.org/10.2464/jilm.70.517