Zobrazeno 1 - 10 of 26 pro vyhledávání: '"Kazuhiko UMEMOTO"'
1
Akademický článek
Transition of deformation modes from bending to auxetic compression in origami-based metamaterials for head protection from impact
Autor: Sunao Tomita, Kento Shimanuki, Shin Oyama, Hidekazu Nishigaki, Toshiaki Nakagawa, Masakazu Tsutsui, Youhei Emura, Masahiko Chino, Hirokazu Tanaka, Yoshinobu Itou, Kazuhiko Umemoto
Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract For the protection of the human head by energy absorption structures, a soft mechanical response upon contact with the head is required to mitigate the effect of impact, while a hard mechanical response for highly efficient energy absorption
Externí odkaz: https://doaj.org/article/a9815f13d54149b8abd1ebc8e34e2f3a
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2
Akademický článek
Origami-inspired metamaterials with switchable energy absorption based on bifurcated motions of a Tachi-Miura polyhedron
Autor: Sunao Tomita, Kento Shimanuki, Hidekazu Nishigaki, Shin Oyama, Takashi Sasagawa, Daisuke Murai, Kazuhiko Umemoto
Publikováno v: Materials & Design, Vol 225, Iss , Pp 111497- (2023)
This study involved the design of energy absorbing structures that have precisely tailored performances based on the differences between the bifurcated motions of a Tachi-Miura polyhedron (TMP) with flat-foldable and load-bearing motions. The tailore
Externí odkaz: https://doaj.org/article/6a35732dd2354dadb69c577f298ca2e8
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4
Molecular Dynamics Simulation of Fracture at a Polymer and Metal Oxide Joining Interface
Autor: Kazuhiko Umemoto, Hiroaki Yoneyama, Tomoyuki Kinjo
Publikováno v: Bulletin of the Chemical Society of Japan. 94:1563-1570
Molecular dynamics simulations are used to study the fracture mechanism of the joining interface of a polymer and metal oxide. A polyphenylene sulfide (PPS) layer is sandwiched between two plates o...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d033a288bd22b7e4f1114e4387c5b9d
https://doi.org/10.1246/bcsj.20200387
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5
Wettability of Primer-Treated Al2O3 Surfaces by Bisphenol A Diglycidyl Ether: Determination of the Mechanism from Molecular Dynamics Simulations and Experiments
Autor: Yoshitake Suganuma, Hiroaki Yoneyama, Tomoyuki Kinjo, Kazuhiko Umemoto, Satoru Yamamoto, Takuya Mitsuoka
Publikováno v: The Journal of Physical Chemistry B. 123:4434-4442
This study aims to develop a molecular dynamics (MD) simulation procedure to investigate the wettability of primer-treated Al2O3 surfaces by bisphenol A diglycidyl ether (BADGE) and to understand t...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ca55fd67c349e9e3bb1483dd024c9ce6
https://doi.org/10.1021/acs.jpcb.9b00680
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9
Wettability of Al2O3 Surface by Organic Molecules: Insights from Molecular Dynamics Simulation
Autor: Satoru Yamamoto, Yoshitake Suganuma, Tomoyuki Kinjo, Kazuhiko Umemoto, Takuya Mitsuoka
Publikováno v: The Journal of Physical Chemistry B. 121:9929-9935
We use molecular dynamics (MD) simulations to investigate the wettability of Al2O3 (0001) by organic molecules. Diffusion coefficients estimated for organic molecules are clearly correlated with the contact angles observed experimentally. The results
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe470e4e13f2b6ac594a91a3998ad473
https://doi.org/10.1021/acs.jpcb.7b07062
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