Search Results 1-20 of 2432

  • Effect of Stoichiometry on Shape Memory Properties and Functional Stability of Ti–Ni–Pd Alloys

    金 熙榮 , 宮崎 修一 , Yuki Hattori , Takahiro Taguchi , Heeyoung KIM , Shuichi MIYAZAKI

    … One of the key issues in developing high-temperature shape memory alloys is the degradation of shape memory properties and dimensional stabilities because plastic deformation becomes more pronounced at higher working temperature ranges. …

    Materials 12(5), 798, 2019-03

    IR 

  • Promoting Heartware Development Through Energy Saving Activities at Toho University  [in Japanese]

    TAKEUCHI Ayano

    <p>気候変動に対応していくためには,全ての社会の構成員が低炭素行動に協力することが必要である。環境に配慮し行動できる人材を育成するための環境教育が重要であり,教育機関である大学に期待される役割は大きい。事例対象の東邦エコリューションは,2017年4月に東邦大学習志野キャンパスで設立された環境団体である。レジ袋有料化,古紙回収など,キャンパスの省エネ活動を促進するために,教職員と学生が …

    ENVIRONMENTAL SCIENCE 32(5), 176-181, 2019

    J-STAGE 

  • Severe Plastic Deformation to Achieve High Strength and High Ductility in Fe–Ni Based Alloys with Lattice Softening

    Kuramoto Shigeru , Furuta Tadahiko

    … The alloys with lattice softening were processed with severe plastic deformation, SPD, to raise the strength. … Here, SPD includes severe cold working by rotary swaging, cold rolling and high-pressure torsion. … The untransformed γ has a potent capability for plastic deformation where strain-induced transformation and deformation twinning can be expected to occur during mechanical tests after SPD processing. …

    MATERIALS TRANSACTIONS 60(7), 1116-1122, 2019

    J-STAGE 

  • Evaluation of Work Hardening and Tensile Strength for Press Worked Products Plastic Strained from Multiaxial Direction

    Ishimura Tetsuro , Nishino Souichiro

    … Tensile strength of mild-steel plate subjected to uniaxial or multiaxial plastic strain was increased. … When strain is applied from multiple axes in press working, as well as tensile strength, fatigue strength is improved by work hardening. … On the other hand, in the case of pre-strained (plastic strain of 20%) material subjected to a uniaxial tensile load, the cell structure was unclear, and even the cells that were produced had coarse grains stretched in the tensile direction.</p> …

    MATERIALS TRANSACTIONS 60(3), 450-457, 2019

    J-STAGE 

  • Deformation behavior during partial diameter-enlarged process at high rotation speeds

    ZHU Xia , OGI Keiji

    … Next, the effect of rotation speed on the deformation behavior was analyzed based on the concept of deformation-induced martensitic transformation and thermally-activated process associated with plastic deformation. …

    Mechanical Engineering Journal 6(1), 18-00284-18-00284, 2019

    J-STAGE 

  • Environmental Reguration and Automobile Body Weight Reduction  [in Japanese]

    IMANISHI Daisuke

    <p>地球温暖化問題が深刻さを増す中,世界各国で温暖化ガスである二酸化炭素の排出の抑制に取り組んでいる。輸送機器から排出される二酸化炭素もその規制対象であり,とくに自動車に関しては各国で厳しい二酸化炭素の排出量規制値を決め,燃費の向上に取り組んでいる。燃費の向上にはパワートレーンの性能向上以外に,車体の軽量化が有効であり,車体の軽量化には超高張力鋼や炭素繊維強化プラスチック等の利用が効 …

    Journal of the Japan Society of Colour Material 92(1), 21-27, 2019

    J-STAGE 

  • On Application of Ultrasonic Vibration to Manufacturing and Future Aspects  [in Japanese]

    青木 繁 , 酒井 康徳 , 田中 智久

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 118(353), 39-42, 2018-12-10

  • Contributions to Spread of Plastic Working and JSTP Activities  [in Japanese]

    IKEDA Hiromichi

    PLASTOS 1(12), 859-859, 2018

    J-STAGE 

  • Spectrum Analysis of Surface Roughness Wave Generated by Friction Stir Forming on A5083 Aluminum Alloy Plate  [in Japanese]

    OHASHI Takahiro , OKUDA Kento , MOFIDI TABATABAEI Hamed , NISHIHARA Tadashi

    <p>In this paper, surface-roughness-waves generated by friction stir forming with a mirror-polished die were evaluated with spectrum analysis utilizing maximum entropy method (MEM). An A5083P-O …

    The Proceedings of the Materials and processing conference 2018.26(0), 620, 2018

    J-STAGE 

  • Molecular Dynamics Study on Strengthening Mechanism by Dislocations in Wiredrawing Process  [in Japanese]

    YOSHIDA Koki , SAITOH Ken-ichi , TAKUMA Masanori , TAKAHASHI Yoshimasa , SATO Tomohiro

    … When a metallic material undergoes plastic deformation, a phenomenon called dislocation occurs. …

    The Proceedings of The Computational Mechanics Conference 2018.31(0), 215, 2018

    J-STAGE 

  • Discussions on simplified model for Simulation of induction bending  [in Japanese]

    Matsuura Nobuto , Hishida Hirotoshi , Naoi Hisashi , Nishimoto Yuzo , Yamazaki Satoshi

    … <p>During induction bending of a steel pipe, a very complicated phenomenon occurs due to electromagnetic induction, heat conduction, plastic deformation and change of material properties depending on temperature which interact with each other. …

    The Proceedings of The Computational Mechanics Conference 2018.31(0), 153, 2018

    J-STAGE 

  • Study of crack fracture mechanicsparameter for low cycle  [in Japanese]

    NAMITA Yoshiki

    … <p>Because the light-water plants keep in appropriate working, keeping integrity of the structure should be confirmed. … Crack propagation is governed by the several condition, however two physical quantities are the major parameters, which are stress triaxiality and equivalent plastic strain. … In the previous studies, a crack propagation condition is described by combining stress triaxiality and equivalent plastic strain under the monotonic test. …

    The Proceedings of The Computational Mechanics Conference 2018.31(0), 097, 2018

    J-STAGE 

  • Multi-objective optimization of variable slide velocity and variable blank holder force in sheet metal forming  [in Japanese]

    YOKOYAMA Masaki , KITAYAMA Satoshi , KAWAMOTO Kiichiro , NODA Takuya , MIYASAKA Takuji , ECHIGO Yuto

    <p>In sheet forming, the blank holder force (BHF) have a direct influence on product quality. A high BHF leads to tearing, whereas a low one results in wrinkling. For successful sheet forming, t …

    The Proceedings of The Computational Mechanics Conference 2018.31(0), 008, 2018

    J-STAGE 

  • Simultaneous optimization of variable blank holder force and slide speed for minimizing processing time  [in Japanese]

    YOKOYAMA Masaki , KITAYAMA Satoshi , KAWAMOTO Kiichiro , NODA Takuya , MIYASAKA Takuji , ECHIGO Yuto

    <p>In sheet forming, the blank holder force (BHF) has a direct influence on product quality. For successful sheet forming, the BHF should be adjusted. Recently, the variable BHF (VBHF) that the …

    The Proceedings of OPTIS 2018.13(0), 214, 2018

    J-STAGE 

  • Cold plastic forming and FEM analysis of ABS plastic pipe  [in Japanese]

    IKEDA Naoki , HARADA Hideto , NISHIDA Shinichi , ICHIKAWA Junshi , KASHITANI Yuta , TSUNODA Kentaro , HORIGOME Yuto , UEMATSU Daichi , HAGIWARA Makoto , OMI Ryoya , KAMEI Nobuyuki

    … In this paper, cold plastic forming of ABS plastic pipe was operated for the purposes of improving productivity and lowering manufacturing cost. … The parts of ABS plastic pipe is generally produced by injection molding of hot working. … Thus, cold plastic forming of ABS plastic pipe was proposed. …

    The Proceedings of Ibaraki District Conference 2018.26(0), 406, 2018

    J-STAGE 

  • Use of Plastic Materials in Automobiles and Issues Surrounding ASR Reduction  [in Japanese]

    Dosaka Kenji

    近年の世界各地域における CO<sub>2</sub> 削減要求から,自動車会社は急激な電動化シフトを始めていることは周知のとおりである。この電動化加速の波は,AI による自動運転やコネクテッドカーと相まって自動車会社にさまざまな影響を与えており,100 年に一度の大変革期ともいわれている。電動化自動車は高性能モーターや大容量のバッテリーの搭載により大幅な燃費の向上が得られ …

    Material Cycles and Waste Management Research 29(2), 108-115, 2018

    J-STAGE 

  • Molecular Dynamics Analysis of Wiredrawing Mechanism and Lattice Defects Behavior  [in Japanese]

    YOSHIDA Koki , SAITOH Ken-ichi , SATO Tomohiro , TAKUMA Masanori , TAKAHASHI Yoshimasa

    … <p>Wiredrawing is one of plastic working methods, and it has been used in a wide range of engineering fields. …

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), J0450105, 2018

    J-STAGE 

  • Deformation behavior during partial diameter-enlarged process at high rotation speeds

    ZHU Xia , OGI Keiji

    … Next, the effect of rotation speed on the deformation behavior was analyzed based on the concept of deformation-induced martensitic transformation and thermally-activated process associated with plastic deformation. …

    Mechanical Engineering Journal, 2018

    J-STAGE 

  • Incremental bending of sheet metal using a tiltable punch  [in Japanese]

    KUBOKI Takashi , KAJIKAWA Shohei , AZRIE Armad , JIN Yingjun

    Working conditions, including indentation and feeding pitch, can easily and flexibly control the bending radius and even the bending direction. …

    The Proceedings of Conference of Kanto Branch 2018.24(0), OS0803, 2018

    J-STAGE 

  • Improvement of strength, toughness and ductility properties in carbon steel  [in Japanese]

    INOUE Tadanobu , UEJI Rintarou , KIMURA Yuuji

    … Initial samples with two different microstructures, ferrite-pearlite and martensite (and/or bainite), were prepared and then caliber rolling was conducted at warm working temperature. … The reduction in area and the plastic deformation limit were used as a universal parameter of ductility. …

    Transactions of the JSME (in Japanese), 2018

    J-STAGE 

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