Výsledky vyhledávání - "Yoshikazu NAKAI"

Akademický článek

Evaluation of fatigue properties under four-point bending and fatigue crack propagation in austenitic stainless steel with a bimodal harmonic structure

Autor: Shoichi Kikuchi, Yuta Nakatsuka, Yoshikazu Nakai, Masashi Natakani, Mie Ota Kawabata, Kei Ameyama

Publikováno v: Frattura ed Integrità Strutturale, Vol 13, Iss 48, Pp 545-553 (2019)

Austenitic stainless steel (JIS-SUS304L) with a bimodal harmonic structure, which is defined as a coarse-grained structure surrounded by a network of fine grains, was fabricated using powder metallurgy to improve both the strength and ductility. Four

Externí odkaz: https://doaj.org/article/20772fafa9ae4abca0935d7b24ef8c59

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Akademický článek

Observation of the initial process of internal fracture in very high cycle fatigue in Ti-6Al-4V by synchrotron radiation μCT imaging

Autor: Fumiyoshi YOSHINAKA, Takashi NAKAMURA, Kazuaki TAKAKU, Daiki SHIOZAWA, Yoshikazu NAKAI, Kentaro UESUGI

Publikováno v: Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 856, Pp 17-00104-17-00104 (2017)

The initiation and growth of internal small fatigue cracks with around ten or several dozen μm in Ti-6Al-4V were nondestructively examined by using synchrotron radiation μCT at the large synchrotron radiation facility SPring-8. Lots of grain-sized

Externí odkaz: https://doaj.org/article/6bde10b9d449457a900252cbae3694f9

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Akademický článek

Effect of TiB Orientation on Near-Threshold Fatigue Crack Propagation in TiB-Reinforced Ti-3Al-2.5V Matrix Composites Treated with Heat Extrusion

Autor: Shoichi Kikuchi, Shunsuke Tamai, Takao Kawai, Yoshikazu Nakai, Hiroki Kurita, Sophie Gourdet

Publikováno v: Materials, Vol 12, Iss 22, p 3685 (2019)

TiB-reinforced Ti-3Al-2.5V matrix composites, in which TiB whiskers are oriented parallel to the direction of heat extrusion, were fabricated via mechanical alloying and hot isostatic pressing (HIP). To investigate the near-threshold fatigue crack pr

Externí odkaz: https://doaj.org/article/708015b8c03f43c181639e6879ce2e68

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Akademický článek

Evaluation of Interfacial Fracture Toughness and Interfacial Shear Strength of Typha Spp. Fiber/Polymer Composite by Double Shear Test Method

Autor: Ikramullah, Samsul Rizal, Yoshikazu Nakai, Daiki Shiozawa, H.P.S. Abdul Khalil, Syifaul Huzni, Sulaiman Thalib

Publikováno v: Materials, Vol 12, Iss 14, p 2225 (2019)

The aim of this paper is to evaluate the Mode II interfacial fracture toughness and interfacial shear strength of Typha spp. fiber/PLLA and Typha spp. fiber/epoxy composite by using a double shear stress method with 3 fibers model composite. The surf

Externí odkaz: https://doaj.org/article/b971d77ad9834f18be6cf4464838eb1a

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Akademický článek

Fatigue Damage Evaluation by Diffraction Contrast Tomography Using Ultra-Bright Synchrotron Radiation

Autor: Yoshikazu Nakai, Daiki Shiozawa, Naoya Asakawa, Kenji Nonaka, Shoichi Kikuchi

Publikováno v: Proceedings, Vol 2, Iss 8, p 380 (2018)

A three-dimensional grain mapping technique for polycrystalline materials, called X-ray diffraction contrast tomography (DCT), was developed at SPring-8, which is the brightest synchrotron radiation facility in Japan. The developed technique was appl

Externí odkaz: https://doaj.org/article/2977c27628e24fc09e6914b076be28ba

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