|
Affiliation Department |
電気・機械工学科 機械工学分野
|
|
Title |
Associate Professor |
|
External Link |
|
MAKINO Takehiko
|
|
|
Degree
-
Master of Engineering ( University of Toyama )
-
Doctor (Engineering) ( Kyoto University )
Research Areas
-
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Manufacturing and production engineering
-
Nanotechnology/Materials / Material processing and microstructure control
-
Nanotechnology/Materials / Metallic material properties
From School
-
University of Toyama Faculty of Engineering Graduated
- 1990.03
Country：Japan
From Graduate School
-
Kyoto University Graduate School, Division of Engineering Doctor's Course
- 1995.03
Country：Japan
Research Career
-
Milecular Dynamics Analysis of Plastic Deformation
(not selected)
Project Year：
-
Microstructure control
(not selected)
Project Year：
-
Molecular Dynamic Analysis of Phase Transformation
(not selected)
Project Year：
Papers
-
Grain size affecting the deformation characteristics via micro-injection upsetting Reviewed International coauthorship International journal
Walaa Abd-Elaziem, Mohsen A. Hassan, Takehiko Makino, Atef Hamada
Materials Science and Technology 37 ( 10 ) 918 - 929 2021.08
Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis
-
Microstructure, Mechanical Properties of Extruded Aluminum at Different Ram Speeds in Micro/Meso-Scale Reviewed International coauthorship International journal
Walaa Abdel-Aziem, Mohsen A. Hassan, Takehiko Makino, Atef Hamada
Metallography, Microstructure, and Analysis 10 402 - 409 2021.07
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer
-
Micro/Meso-Scale Equal Channel Angular Pressing of Al 1070 Alloy: Microstructure and Mechanical Properties Reviewed International coauthorship International journal
Walaa Abdel-Aziem, Atef Hamada, Takehiko Makino, Mohsen A. Hassan
Journal of Materials Engineering and Performance 29 6201 - 6211 2020.09
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer
In the present study, Al 1070 alloy pins were processed via micro/meso-scale equal channel angular pressing (channel diameter 1.5 mm, the smallest channel diameter has ever been achieved in mesoscale), up to four passes at room temperature. The microstructure characteristics, i.e., grain size, and misorientation angle distributions were analyzed by high-resolution electron backscatter diffraction on the transverse plane for the ECAPed samples. Tensile properties for such small processed pins were measured by constructed micro/meso-scale tensile machine. The gauge length and the gauge diameter were 2 mm and 1.5 mm, respectively. After the fourth ECAP pass, the results revealed that the microstructure was refined remarkably from 15.5 μm (the initial undeformed sample) to nearly 1.9 μm due to the gradual transformation of the low-angle grain boundaries into high-angle grain boundaries as a result of the occurrence of grain subdivision. Micro/meso-scale ECAP does a significant enhancement in the ultimate tensile strength by 63%, whereas the ductility decreased after the fourth ECAP pass by 47.3% and this is supposed to be ascribed to the continuous decrease in subgrain size. The above results prove that the ECAP process has the potential for obtaining fine grains and improving material tensile properties even in micro/meso-scale.
DOI： 10.1007/s11665-020-05090-4
Other Link： https://link.springer.com/article/10.1007%2Fs11665-020-05090-4
-
Microstructural evolution during extrusion of equal channel angular-pressed AA1070 alloy in micro/mesoscale Reviewed International coauthorship International journal
Walaa Abdel-Aziem, Atef Hamada,Takehiko Makino, M. Hassan
Materials Science and Technology 36 ( 11 ) 1169 - 1177 2020.05
Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis
Commercially AA1070 aluminium was processed by micro/mesoscale equal channel angular pressing (ECAP) up to four passes, via route BC, to achieve fine grain structure and thereby enhancing the mechanical properties. Subsequently, the samples subjected to ECAP processing underwent an extrusion deformation in micro/mesoscale. The microstructural evolution of the deformed structures was followed using electron backscatter diffraction. The findings confirm that a remarkable refinement in the grain structure was observed as a result of the gradual transformation of the low angle grain boundaries into high angle grain boundaries through the grain subdivision mechanism. Consequently, a substantial improvement of the mechanical properties of the extruded material is promoted compared to the samples subjected to ECAP processing.
DOI： 10.1080/02670836.2020.1759485
Other Link： https://www.tandfonline.com/doi/full/10.1080/02670836.2020.1759485
-
Microstructure Evolution of AA1070 Aluminum Alloy Processed by Micro/Meso-Scale Equal Channel Angular Pressing Reviewed International coauthorship International journal
Walaa Abdel-Aziem, Atef Hamada, Takehiko Makino, Mohsen A. Hassan
Metals and Materials International 2019.11
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer
The Micro/meso-forming of commercially pure aluminum, AA1070, processed at room temperature by equal channel angular pressing (ECAP) with a die channel angle of 90° through 4 deformation passes has been conducted. Microstructure features, such as grain size, misorientation angle distributions and the developed texture during the four deformation passes of micro/meso-ECAP have been investigated by Electron backscattering diffraction (EBSD) technique. Then, hardness measurements over the cross-section of the processed samples were correlated with the EBSD analysis. EBSD scans revealed that extended shear bands are formed and represent the microstructural feature induced during micro/meso-forming. Whereas, a non-uniform grain structure consisting of intensive low-angle grain boundaries was obtained in the first pass, a uniform ultrafine-grained structure of high-angle grain boundaries (in the range of 1–2 μm) was achieved at the fourth pass. Consequently, a significant improvement in the hardness value to 65.3%, with respect to the starting material, was achieved due to the enhancement of the fine grain structure. The texture analysis exhibited that the high plastic shear strain associated with micro/meso-scale ECAP was capable to develop a weak texture in the flow plane compared to the starting texture.
DOI： 10.1007/s12540-019-00544-4
Other Link： https://link.springer.com/article/10.1007/s12540-019-00544-4
-
Tribological effects of punch with micro-dimples in blanking under high hydrostatic pressure Reviewed International journal
K. Kitamura, T. Makino, M. Nawa, S. Miyata
CIRP Annals - Manufacturing Technology 65 249 - 252 2016.06
Language：English Publishing type：Research paper (scientific journal)
-
Direct measurement of friction force during forming International journal
Takehiko Makino. Yuya Yogo, Toshinari Michimoto, Yohei Takamori
4th Asian Symposium on Materials Processing (ASMP 2015) 39 - 40 2016.03
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
Information about distribution and change in friction during forming is required to construct a prediction model. The small deflection of a thin part fabricated at the other side of a flat tool surface is detected using laser reflection to decompose the normal and horizontal (frictional) forces. The locus of laser reflection on a detector showed both components. The values estimated from the locus were fairly close to the measured forces.
-
Contact potential difference measurement of adhesion process during micro/meso-scale injection upsetting (共著) Reviewed
Takehiko Makino, Toshinari Michimoto, Shinpei Moriyama, Tohru Kikuchi
Procedia Engineering 81 444 - 449 2014.11
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
-
Proposal of a Ball Burnishing Method with Forced Rotation (共著) Reviewed
Futamura, M., Ishitani, A., Makino, T. and Dohda, K.
Tribology Online 6 199 - 206 2011.03
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://www.jstage.jst.go.jp/article/trol/6/4/6_199/_article
-
Frictional Behavior of Ball Rotation with Plastic Deformation (共著) Reviewed
Futamura, M., Ishitani, A., Makino, T. and Dohda, K.
Tribology Online 6 193 - 198 2011.03
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://www.jstage.jst.go.jp/article/trol/6/4/6_193/_article
Books and Other Publications
-
Micro-Manufacturing (共著)
T. Makino, K. Dohda（ Role： Joint author）
John Wiley & Sons Inc. 2011.07 （ ISBN:978-0-470-55644-3 ）
Language：eng Book type：Scholarly book
Misc
-
Tribology in Tool/Material Interface during Forming Invited Reviewed
Takehiko Makino
Journal of Japanese Society of Tribologists 63 ( 7 ) 459 - 465 2018.07
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Tribologists
-
マイクロ・メゾ成形のトライボロジー（共著）
堂田 邦明, 牧野 武彦
49 638 - 642 2008.07
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (international conference proceedings) Publisher：日本塑性加工学会
-
ぬれの分子動力学解析
牧野 武彦
39 40 - 47 2005.11
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other) Publisher：日本溶接協会ろう部会
Presentations
-
The relationship between adhesion and atomic interactions during forming processes in atomic-scale calculations
Takehiko Makino, Keita Aono
The 75th Japanese Joint Conference for the Technology of Plasticity 2024.11 The Japan Society for Technology of Plasticity
Event date： 2024.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
-
Effects of periodic boundary conditions and potential settings on the generation of MD cell structures along curved surfaces
Takehiko Makino, Tsubasa Yamazaki
The 75th Japanese Joint Conference for the Technology of Plasticity 2024.11 The Japan Society for Technology of Plasticity
Event date： 2024.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
-
Dynamic wetting behavior of water droplets under external force on 3D-printed surface structures
Takehiko Makino, Atsushi Endo
The 74th Japanese Joint Conference for the Technology of Plasticity 2023.11 The Japan Society for Technology of Plasticity
Event date： 2023.11
Language：Japanese
Venue：Toyama city Country：Japan
-
Wettability of MD surface structures with partially expansion and contraction
Takehiko Makino, Ryota Nogaki
The 74th Japanese Joint Conference for the Technology of Plasticity 2023.11 The Japan Society for Technology of Plasticity
Event date： 2023.11
Language：Japanese
Venue：Toyama city Country：Japan
-
Combinatorial measurement of adhesion on tools by sequential process including contact potential measurement in vacuum
Takehiko Makino, Mai Inagaki, Koga Nomura
The 73th Japanese Joint Conference for the Technology of Plasticity 2022.11 The Japan Society for Technology of Plasticity
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
-
Direct measurement of frictional force on tool surface during forming of low-melting point alloy by thin-wall displacement-detection method
Takehiko Makino, Ryo Kawauchi
The 73th Japanese Joint Conference for the Technology of Plasticity 2022.11 The Japan Society for Technology of Plasticity
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：Sendai city Country：Japan
-
Design method of MD cell structure with free curved surface
Takehiko Makino, Tsubasa Yamazaki
The 73th Japanese Joint Conference for the Technology of Plasticity 2022.11 The Japan Society for Technology of Plasticity
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：Sendai city Country：Japan
-
Quantitative determinant of adhesion analyzed by using atomistic calculation and machine learning
Takehiko Makino, Kippei Mori
The 73th Japanese Joint Conference for the Technology of Plasticity 2022.11 The Japan Society for Technology of Plasticity
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：Sendai city Country：Japan
-
Effect of combination of displacement and change in potential in MD calculation on compression properties of MD cell structures
Takehiko Makino, Ririka Akita
The 73th Japanese Joint Conference for the Technology of Plasticity 2022.11 The Japan Society for Technology of Plasticity
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：Sendai city Country：Japan
-
Compression properties of MD cell structures fitted to free-form surface
Takehiko Makino, Genta Mizuno
The 72th Japanese Joint Conference for the Technology of Plasticity The Japan Society for Technology of Plasticity
Event date： 2021.10
Language：Japanese Presentation type：Oral presentation (general)
Venue：Online
Scientific Research Funds Acquisition Results
-
Design method of MD cell structure with free curved surface
2022.04 - 2025.03
Grant-in-Aid for Scientific Research Grant-in-Aid for Scientific Research(C)
Takehiko Makino
Authorship：Principal investigator Grant type：Competitive
-
マイクロ・メゾ成形中の摩擦界面挙動の定量とモデル化
2015.04 - 2018.03
科学研究費補助金 基盤研究(C)
牧野 武彦
本研究は，マイクロ・メゾ成形による金属部品の精度と信頼性に大きな影響を及ぼす工具／材
料間の摩擦界面挙動を定量化し， 成形の解析のためのモデル化を行うことを目的とする.界面挙動
の定量は，工具表面の凝着量についての接触電位差測定を所定量ごとの成形後に行い，モデル化
は，この定量結果と工具表面に加わる摩擦力の測定を成形中に行った結果を比較して行う．最終
的に，成形前の材料状態の結果として成形中に変化する境界条件を，成形の解析に適用する． -
マイクロ・メゾ成形中の工具／材料間摩擦力の直接測定
2012.04 - 2015.03
科学研究費補助金 基盤研究(C)
牧野 武彦
マイクロ・メゾスケールの成形中の工具／材料間摩擦力の分布と変化を，工具微小ひずみ検出機構により直接測定し，さらにその摩擦を決定する工具表面の材料の凝着状態を，仕事関数測定により高感度で観測することによって，摩擦状態分布を可視化する，新たな摩擦状態測定システムを構築した．
-
マイクロ・メゾスケール成形加工解析法の構築
2009.04 - 2012.03
科学研究費補助金 基盤研究(C)
牧野 武彦
寸法効果が顕著になるマイクロ・メゾスケールでの成形加工の解析法を構築することを目的とし，結晶のサイズと方位分布を扱える有限要素多結晶モデルと，原子レベルで界面の挙動を扱える分子動力学法を結合し，微小部品の塑性加工の広範囲な問題を扱える解析法を構築した．
-
原子内包フラーレンを基本要素としたナノ構造素子の開発
2003.04 - 2006.03
科学研究費補助金 若手研究(B)
牧野 武彦
原子内包フラーレンを人為的な操作が可能な原子（基本要素）とみなし，これを周囲の環境変化によって自己組織的に配列させることが同時に機能発現となる，新たな分子素子の創造を目指した．原子内包フラーレンの電子状態を明らかにし，これを表現できる簡単な分子間相互作用を想定した分子動力学計算を行い，自己組織的配列の可能性を論じた．