Výsledky vyhledávání - "Shigekazu Uchiyama"

Experimental evaluation of filled-hole compressive strengths of thin-ply carbon fiber / epoxy composite laminates

Autor: Toshio Ogasawara, Tomoisa Mikami, Kota Takamoto, Kenji Asakawa, Kazuyuki Aoki, Shigekazu Uchiyama, Sunao Sugimoto, Tomohiro Yokozeki

Publikováno v: Composites Science and Technology. 237:109996

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a2feeb2b65ae14be2dfecee56ccd478
https://doi.org/10.1016/j.compscitech.2023.109996

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Effects of ply thickness and 0°-layer ratio on failure mechanism of open-hole and filled-hole tensile tests of thin-ply composite laminates

Autor: Ryo Higuchi, Tomohiro Yokozeki, Kazuyuki Aoki, Toshio Ogasawara, Shigekazu Uchiyama, Ryoma Aoki

Publikováno v: Composite Structures. 280:114926

Thin-ply technology provides increasing possibilities for composite structures, expanding the design space for ply thickness and laminate layup. This study examines the effects of ply thickness and the 0°-layer ratio on the strength and damage behav

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14e699f7814e37598ed65102cc580149
https://doi.org/10.1016/j.compstruct.2021.114926

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Damage-mechanics mesoscale modeling of composite laminates considering diffuse and discrete ply damages: Effects of ply thickness

Autor: Kazuyuki Aoki, Toshio Ogasawara, Shigekazu Uchiyama, Tomohiro Yokozeki, Ryo Higuchi, Ryoma Aoki

Publikováno v: Composite Structures. 277:114609

Thin-ply composites are gaining significant attention owing to their high damage resistance and their ability to enhance design flexibility in a composite structure. Herein we proposed a damage mechanics model considering diffuse and discrete ply dam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e73ec6f8005d497bcdc1023afe7df655
https://doi.org/10.1016/j.compstruct.2021.114609

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Imaging of rock interior using geotomography techniques. Part 2: Imaging of ground water flow in a rock mass

Autor: Keiji Kojima, Hiromasa Shima, Shigekazu Uchiyama, Hiromichi Ishibashi, Shigeo Kanwo, Hideki Saito

Publikováno v: Journal of the Japan Society of Engineering Geology. 30:179-188

Two types of geotomography techniques, seismic tomography and resistivity tomography, were reviewed and experimentally applied to the foundation rock investigation at a dam site. The target area was a vertical section defined by test adit and borehol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e072b6aa68d6c251ccfb4fa4a637d765
https://doi.org/10.5110/jjseg.30.179

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Imaging of Rock Interior Using Geotomography Techniques

Autor: Shigeo Kanwo, Hiromichi Ishibashi, Hiromasa Shima, Shigekazu Uchiyama, Hideki Saito, Keiji Kojima

Publikováno v: Journal of the Japan Society of Engineering Geology. 30:121-130

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fbd1c4d2ca0951b9517c962c481c7b6d
https://doi.org/10.5110/jjseg.30.121

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Estimation of Q Value in Formations

Autor: Shigekazu Uchiyama

SYNOPSIS There are two factors which govern the rate of amplitude decrease during propagation of seismic waves through isotropic and homogenous media. The first is attenuation due to geometrical expansion of the wave front. The second is attenuation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60fe7c0855a09b3dfbf94f9e58fb831c
https://doi.org/10.1016/b978-0-08-035894-9.50044-5