Výsledky vyhledávání - "Mitsuhiro MURAYAMA"

Akademický článek

Deep learning-based noise filtering toward millisecond order imaging by using scanning transmission electron microscopy

Autor: Shiro Ihara, Hikaru Saito, Mizumo Yoshinaga, Lavakumar Avala, Mitsuhiro Murayama

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)

Abstract Application of scanning transmission electron microscopy (STEM) to in situ observation will be essential in the current and emerging data-driven materials science by taking STEM’s high affinity with various analytical options into account.

Externí odkaz: https://doaj.org/article/f309538b792040309bba7badf70a9a4a

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Akademický článek

Five-second STEM dislocation tomography for 300 nm thick specimen assisted by deep-learning-based noise filtering

Autor: Yifang Zhao, Suguru Koike, Rikuto Nakama, Shiro Ihara, Masatoshi Mitsuhara, Mitsuhiro Murayama, Satoshi Hata, Hikaru Saito

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)

Abstract Scanning transmission electron microscopy (STEM) is suitable for visualizing the inside of a relatively thick specimen than the conventional transmission electron microscopy, whose resolution is limited by the chromatic aberration of image f

Externí odkaz: https://doaj.org/article/5fd9d3cbe5c94ad58f3a62a112c3e465

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Akademický článek

Investigating the dislocation reactions on Σ3{111} twin boundary during deformation twin nucleation process in an ultrafine-grained high-manganese steel

Autor: Chang-Yu Hung, Tomotsugu Shimokawa, Yu Bai, Nobuhiro Tsuji, Mitsuhiro Murayama

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)

Abstract Some of ultrafine-grained (UFG) metals including UFG twinning induced plasticity (TWIP) steels have been found to overcome the paradox of strength and ductility in metals benefiting from their unique deformation modes. Here, this study provi

Externí odkaz: https://doaj.org/article/1885a53d6c2a47919b39a06d081c9623

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Akademický článek

Unique transition of yielding mechanism and unexpected activation of deformation twinning in ultrafine grained Fe-31Mn-3Al-3Si alloy

Autor: Yu Bai, Hiroki Kitamura, Si Gao, Yanzhong Tian, Nokeun Park, Myeong-heom Park, Hiroki Adachi, Akinobu Shibata, Masugu Sato, Mitsuhiro Murayama, Nobuhiro Tsuji

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)

Abstract Tensile mechanical properties of fully recrystallized TWIP steel specimens having various grain sizes (d) ranging from 0.79 μm to 85.6 μm were investigated. It was confirmed that the UFG specimens having the mean grain sizes of 1.5 μm or

Externí odkaz: https://doaj.org/article/86bd8bb69e144719add2355a61094a95

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Akademický článek

A correlation between grain boundary character and deformation twin nucleation mechanism in coarse-grained high-Mn austenitic steel

Autor: Chang-Yu Hung, Yu Bai, Tomotsugu Shimokawa, Nobuhiro Tsuji, Mitsuhiro Murayama

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)

Abstract In polycrystalline materials, grain boundaries are known to be a critical microstructural component controlling material’s mechanical properties, and their characters such as misorientation and crystallographic boundary planes would also i

Externí odkaz: https://doaj.org/article/ceccea22d28b4de0b927a249bb6e83d1

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Akademický článek

Geopolymer/Zeolite composite materials with adsorptive and photocatalytic properties for dye removal.

Autor: Kedsarin Pimraksa, Naruemon Setthaya, Maneerat Thala, Prinya Chindaprasirt, Mitsuhiro Murayama

Publikováno v: PLoS ONE, Vol 15, Iss 10, p e0241603 (2020)

This study investigated the adsorption capacities and photocatalytic activities of geopolymer-zeolite composite materials by incorporating different amounts of zeolite and TiO2 in a geopolymer matrix for dye removal. Geopolymers with SiO2/Al2O3 molar

Externí odkaz: https://doaj.org/article/dd96c5ee8cc5455b81b2ef6dfda73ef2

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Akademický článek

Effect of Underlay Rigidity on Cutting Characteristic of Aluminum Foil during Wedge Shearing Process

Autor: Seksan CHAIJIT, Shigeru NAGASAWA, Yasushi FUKUZAWA, Mitsuhiro MURAYAMA, Akira HINE

Publikováno v: Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 2, Iss 4, Pp 800-811 (2008)

This paper reports for the cutting mechanism of a thin worksheet on a flexible underlay by wedge indentation. The effect of underlay's rigidity on the cutting characteristics and separation limit of aluminum foil is studied. Indentation of a 42 degre

Externí odkaz: https://doaj.org/article/d956299abb2b436eb406fd0462b9e8ac

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Akademický článek

Estimation model of training support system for Finite Element Analysis and implementation of training scenario as knowledge patterns

Autor: Mitsuhiro Murayama, Yusuke Munakata, Junya Ikeda, Shigeru Nagasawa

Publikováno v: Journal of Systemics, Cybernetics and Informatics, Vol 1, Iss 2, Pp 40-45 (2003)

This paper presents an arrangement method of FEA modeling knowledge by using a design pattern methodology, and deals with an estimation method of FEA training scenario. The prototype support system and its training knowledge can be arranged and class

Externí odkaz: https://doaj.org/article/91e60eb146cd4c17a03951e9dca627ec

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