Updated on 2025/01/10

写真a

 
Shijie Zhu
 
Organization
Faculty of Engineering Department of Intelligent Mechanical Engineering Professor
Graduate School of Engineering Doctor's Course Material Science and Production Engineering Professor
Graduate School of Engineering Master's program Intelligent Mechanical Engineering Professor
Title
Professor
Contact information
メールアドレス
External link

Degree

  • 工学博士 ( 1989.3 )

Research Interests

  • 誘電エラストマー

  • コーティング

  • 材料力学

  • 疲労

  • 破壊

  • 複合材料の界面

  • クリープ

  • 材料

Research Areas

  • Nanotechnology/Materials / Composite materials and interfaces

  • Nanotechnology/Materials / Structural materials and functional materials

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials

Education

  • 大連理工大学

    1985.9 - 1989.03

Research History

  • ハーバード大学

    2013.4 - 2014.3

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    Country:United States

  • Fukuoka Institute of Technology   Professor

    2005.4

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  • 東京大学   生産技術研究所   准教授

    2001.2 - 2005.3

  • 電気通信大学   知能機械工学科   准教授

    1998.4 - 2001.1

  • 長岡技術科学大学   機械系   助教

    1996.4 - 1998.3

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Professional Memberships

Committee Memberships

  •   ICIESS 2024実行委員会委員  

    2024.10   

  •   第2回日中疲労に関する共同国際会議実行委員会委員  

    2011   

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  •   7th International Forum on Material Science and Technologyの国際会議共同主席  

    2010   

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  •   第1回日中疲労に関する共同国際会議実行委員会委員  

    2009   

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  •   6th International Forum on Material Science and Technologyの国際会議実行委員会委員  

    2008   

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Papers

  • Twinning and stacking fault-induced precipitation in an aluminum alloy

    Fu Y., Yousefi Mehr V., Toroghinejad M.R., Chen X., Jie J., Zhu S.

    Journal of Materials Research and Technology   34   2127 - 2132   2025.1

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    Publisher:Journal of Materials Research and Technology  

    The precipitation process in Al alloys has been an attractive phenomenon for engineering alloys. In this study, the Al 6082 alloys processed via forging, followed by a heat treatment procedure consisting of solution treatment at 530 °C for 3 h, and an aging process at 175 °C for 8 h. Detailed precipitation investigations have been conducted using high-resolution TEM. The results show that the Al, Mn, and Si elements segregate to form precipitates with complex crystal structures at different locations such as triple junctions. Also, two major scenarios for determining precipitation formation during heat treatment are proposed. The single atom jump along the interface between the precipitate and the matrix is evidenced by the creation of a jagged interface. The formation of partial dislocations and the resulting staking faults are also suggested as another mechanism in precipitates growth. The creation of twinning adjacent to precipitates and precipitates increased in stacking fault as the atomic layers transformed into closely packed precipitates are observed in sequence.

    DOI: 10.1016/j.jmrt.2024.12.223

    Scopus

  • Dominant Factors and Formation Conditions of Fatigue Shear Band Thickening in Zr-Ni-Al Metallic Glasses

    Tomoda Akinori, Nakamura Yuhi, Zhu Shijie

    Journal of the Japan Institute of Metals and Materials   88 ( 11 )   281 - 287   2024.11

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    Authorship:Corresponding author   Language:Japanese   Publisher:The Japan Institute of Metals and Materials  

    <p>Metallic glasses (MGs) are materials in which atoms are arranged randomly over a long range. Therefore, MGs have superior mechanical properties such as high strength, low Young's modulus, high corrosion resistance, low coefficient of friction, and high transferability compared to crystalline materials. In previous studies, the shear band (SB) thickening occurring after the SB formation has been observed, and attributed to the intrinsic fatigue mechanism for MGs. However, the dominant factor for the thickening phenomenon has not been investigated and remains elusive. In this study, molecular dynamics (MD) simulation for monotonic compression, tension, and cyclic fatigue behavior was performed to investigate the fatigue mechanisms in Zr-Ni-Al metallic glass at the atomic-scale. The relationship between the strain range and SB formation and SB thickening phenomena was quantitatively explored by conducting several types of cyclic loading simulations. As a result, the relationship between the plastic strain range and SB thickening behavior was established.</p>

    DOI: 10.2320/jinstmet.J2023044

    Scopus

    CiNii Research

  • Microscopic in situ observation of electromechanical instability in a dielectric elastomer actuator utilizing transparent carbon nanotube electrodes

    Song Z.Q., Wang L.M., Liang Y., Wang X.D., Zhu S.

    Soft Matter   20 ( 35 )   6971 - 6983   2024.8

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    Publisher:Soft Matter  

    Electromechanical instability (EMI) restricts the performance of dielectric elastomer actuators (DEAs), leading to premature electrical breakdown at a certain voltage. However, macro-level observations using traditional carbon grease electrodes have failed to capture the detailed features of EMI. In this study, we investigated EMI at the microscopic scale by fabricating transparent and conductive single-walled carbon nanotube (SWCNT) electrodes. Our findings reveal that EMI predominantly occurs in highly localized regions with dimensions on the order of tens of micrometers. This snap-through instability is likely induced by pre-existing defects within the elastomer, such as air voids or conductive particles, which reduce the critical voltage required for EMI in the flawed areas. From the perspective of phase transition principles, these defects act as heterogeneous nucleation sites for new phase embryos, thereby lowering the energy barrier for the electromechanical phase transition (i.e., EMI) compared to homogeneous nucleation in an ideally impurity-free elastomer. This study clarifies the longstanding discrepancy between theoretically predicted deformation bursts and the experimentally observed macroscopic continuous expansion of DEAs under low pre-stretch conditions. Additionally, it underscores the critical importance of material purity in mitigating electromechanical instability.

    DOI: 10.1039/d4sm00596a

    Scopus

  • Influence of Stretch-dependent Permittivity on Power Generation Output of Dielectric Elastomer

    Sun D., Tagawa K., Zhu S., Suzuoki Y., Kurimoto M.

    Proceedings of SPIE - The International Society for Optical Engineering   12945   2024

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    Publisher:Proceedings of SPIE - The International Society for Optical Engineering  

    Dielectric elastomer (DE) energy harvesting device can be used as power source for battery-free or battery-maintenance-free wireless sensors, owing to the lightweight, high energy density and excellent deformability of DE. Previous research has shown that the power generation output of a DE device can be enhanced by increasing the permittivity of DE. However, the permittivity decreases with the mechanical stretching deformation. In this work, we investigated the influence of the stretch-dependent permittivity on power generation output of DE device. As a DE with increased permittivity, a composite material consisting of silicone elastomer base and rod-like titanium dioxide fillers (RTC) was used. Pure-silicone elastomer-based DE (PSR) was also used for comparison. The permittivity of the DE was measured under different stretching states and the lumped parameter model proposed by Schlögl et al. was used to fit the measurement results. Then the theoretical power generation output of DE device was simulated based on the fitting results. The results showed that the permittivities of RTC and PSR decreased by 28% and 17%, respectively when the DEs were uniaxially stretched to a stretch ratio of 5. The simulated power generation outputs of DE devices with RTC and PSR are similar, due to the large decrease in permittivity of RTC. The conclusion is that it is essential for enhancing power generation output of DE device not only to increase permittivity but also to weaken the stretch dependence on the permittivity because the permittivity decreases with stretching.

    DOI: 10.1117/12.3009643

    Scopus

  • Improvement of Power Generation Performance of Dielectric Elastomer Generators Reviewed

    Shijie Zhu; Tonghuan Qu; Kazuhiro Ohyama, Yukiko Nakahara; Hengtong Cheng; Zhenqiang Song

    2023 9th International Conference on Engineering, Applied Sciences, and Technology (ICEAST)   2023.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Publisher: IEEE  

    DOI: 10.1109/ICEAST58324.2023.10156898

    Other Link: https://cir.nii.ac.jp/crid/1872272492669975168

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Books

MISC

  • ナノコンポジットの疲労・クリープ損傷機構の解明

    朱 世杰

    福岡工業大学エレクトロニクス研究所所報     28   2011

  • 窒化ケイ素セラミックスの破壊靱性測定

    朱世杰

    福岡工業大学エレクトロニクス研究所所報   25   15 - 18   2008

  • 圧延銅膜の引張強度および疲労特性の異方性

    朱世杰

    エレクトロニクス研究所所報   第24 巻   46 - 51   2006

  • 繰返し押し込み試験による遮熱コーティングの界面損傷

    朱世杰、福田晋

    エレクトロニクス研究所所報   第24巻   43 - 45   2006

Presentations

  • Maximizing power generation performance in a transversely constrained dielectric elastomer International conference

    Takumi Murakami, Kazuki Hagiwara and Shijie Zhu

    ICIESS 2024: INTERNATIONAL CONFERENCE ON INNOVATIONS IN ENGINEERING AND SOCIAL SCIENCE 2024  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka   Country:Japan  

  • Effect of Notch Size on Fatigue Fracture of Metals International conference

    Yilin Jiang, Cheng Sun, Shijie Zhu, Gang Deng, Xian Chen and Fei Jiang

    ICIESS 2024: INTERNATIONAL CONFERENCE ON INNOVATIONS IN ENGINEERING AND SOCIAL SCIENCE 2024  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka   Country:Japan  

  • Molecular dynamics simulation on mechanical properties of single crystal copper under monotonic loading

    Junya Yamaguchi, Akinori Tomoda and Shijie Zhu

    ICIESS 2024: INTERNATIONAL CONFERENCE ON INNOVATIONS IN ENGINEERING AND SOCIAL SCIENCE 2024  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka   Country:Japan  

  • Effect of thermal exposure on microstructure and interfacial fracture toughness of TBC system International conference

    Eishin Inoue, Yuki Okuyama, Shijie Zhu, Tatsuo Suidu and Yoichiro Habu

    ICIESS 2024: INTERNATIONAL CONFERENCE ON INNOVATIONS IN ENGINEERING AND SOCIAL SCIENCE 2024  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka   Country:Japan  

  • Effect of TiO2 addition on dielectric properties and power generation of dielectric elastomers

    Kazuki Hagiwara, Takumi Murakami, Shijie Zhu, Dejie Sun and Muneaki Kurimoto

    ICIESS 2024: INTERNATIONAL CONFERENCE ON INNOVATIONS IN ENGINEERING AND SOCIAL SCIENCE 2024  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka   Country:Japan  

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Research Projects

  • 誘電エラストマー基複合材料の構造設計による革新的アクチュエーターの開発

    2015 - 2018

    科研費  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Competitive

  • 蛍光スペクトルを用いた遮熱コーティングの非接触・非破壊手法の開発

    2006 - 2008

    科研費  基盤研究(C)一般

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    Authorship:Principal investigator  Grant type:Competitive

    その他1:(継続)

  • 繊維強化セラミックスの誘電特性を用いた非接触・非破壊損傷検出による残存強度の測定

    2002 - 2004

    科研費  基盤研究(B)

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  • 繊維強化セラミックス基複合材料の耐酸化性の向上およびその機構の解明

    1999 - 2001

    科研費  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Competitive

  • セラミックス基連続繊維強化複合材SiC/SiCの高温疲労損傷機構

    1997 - 1998

    科研費  奨励研究(A)

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    Authorship:Principal investigator  Grant type:Competitive

Teaching Experience (On-campus)

  • 2023   Analysis I and Exercise

  • 2023   Mechanics of Materials I

  • 2023   Mechanics of Materials II

  • 2023   Introduction to Advanced Intelligent

  • 2023   Creative Experiments for Intelligent

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Social Activities

  • 第2回日中疲労に関する共同国際会議実行委員会委員

    2011

  • 7th International Forum on Material Science and Technologyの国際会議共同主席

    2010

  • 第1回日中疲労に関する共同国際会議実行委員会委員

    2009

  • 6th International Forum on Material Science and Technologyの国際会議実行委員会委員

    2008