Search Results 1-20 of 1104

  • Study on the Quantitative Evaluation of the Surface Force Using a Scanning Probe Microscope

    Yagi Wataru , Honda Tomomi , Tamura Kazushi , Narita Keiichi

    … There are two types of friction modifiers (FMs) used as lubricant additives: Reaction film FMs (RF-FMs) and adsorption film FMs (AF-FMs). … However, the e ects of their combination are highly complicated due to the interaction between these FMs. … If the interaction force of AF-FMs with various materials can be evaluated, it would help us to improve tribological performances of lubricants. …

    Lubricants 8(6), 66-1-18, 2020-06-17


  • Synthesis of solvent-free conductive and flexible cellulose-carbon nanohorn sheets and their application as a water vapor sensor

    Paneer Selvam Karthik , Nakagawa Tomohiro , Marui Tatsuki , Inoue Hirotaka , Nishikawa Takeshi , Hayashi Yasuhiko

    … Surfactants or any other chemical treatments to tailor the surface properties of CNHs were avoided to obtain composite sheets from pristine CNHs and cellulose. … Utilizing the hygroscopic property of hydroxyethylcellulose and the electrical conductivity of CNHs paved a path to perform this experiment. … The synthesis technique is simple, and the fabrication and drying of the sheets were effortless. …

    Materials Research Express 7(5), 056402, 2020-05-04



    NAKAJIMA Yumiko , ISHIHARA Saori , TANAKA Kyoji

    … <p> Most fluid-applied polyurethane membrane systems are composed of two layers such as a main polyurethane layer and a top coating layer. … It was sometimes found out in actual buildings that a top coating layer is ruptured by movement of cracks in substrate. … This kind of defect hasn't been reported till now. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 177-183, 2020-02


  • ELEMENTAL EXPERIMENT OF DISK SHEAR-KEY UNDER TENSILE FORCE AND SHEAR FORCE AND ITS SHEAR STRENGTH EVALUATION:Stress transmission mechanism and mechanical behavior of the joints for external seismic retrofitting : Part 2  [in Japanese]

    ISHIDA Yutaro , SAKATA Hiroyasu , TAKASE Yuya , MAIDA Yusuke , SATO Takumi , KUBOTA Masaharu

    … <p> The disk shear-key is a composite shear resistance system composed of a steel disk and an anchor bolt. … Therefore, in the current design and construction method for the external seismic retrofitting, the disk shear-keys are placed in the center of the span and it is assumed that the shear force is to be borne on average. … Then, for the tensile force due to the eccentric moment, post-installed anchors are placed at both ends of span. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 251-261, 2020-02


  • Validation of Accuracy Improvement Effect and Factor of Precision Measuring Robot Using Electromagnet Vibration Analysis

    Tanaka Kazuhide , Yoshida Ichiro

    … In electric power stations, precise measurement of the surface roughness is absolutely necessary for reducing the environmental load and ensuring quality and safety. … Such precise measurement is a difficult and stressful manual operation because it is performed in uncomfortable environments such as high places and narrow spaces. …

    Transactions on GIGAKU 7(1), 07003-1-07003-7, 2020


  • Friction Stir Spot Welding for CFRP/Al with Polyamide Resin  [in Japanese]

    TANAKA Kazuto , NIWA Kazumasa , KATAYAMA Tsutao , NISHIGUCHI Katsuya

    … ISO 14272 and 14273 joint strength evaluation of resistance spot welding specify tensile shear tests and cross tensile tests. … In order to ensure the reliability of welding, it is necessary to evaluate the strengths of each tests and clarify the fracture mechanism of CFRP/Al welded by this method. …

    Journal of the Society of Materials Science, Japan 69(5), 379-385, 2020


  • Measuring Electromagnetic Responses of CFRP for Lightning Risk Management

    Alkhteeb Sultan , Oho Shigeru , Shimizu Hiroyuki , Nishimura Seisuke

    … <p>The electrical features of carbon fiber reinforced plastic (CFRP) were studied with experiments involving an Arago's disk, a backside electrode, a capacitor, and a box made of CFRP plates and bars. … The Arago's disk rotation showed anisotropic characteristics due to the orientation of the carbon fiber in CFRP, while the surface discharging with a CFRP backside electrode was independent of the CFRP material. …

    IEEJ Transactions on Fundamentals and Materials 140(5), 299-303, 2020


  • The influence on the Electrical Reliability of Etching Process during Semi-Additive Method for Printed Circuit Board — Analysis by Use of AC Impedance  [in Japanese]

    Moteki Kei , Yoshihara Sachio , Seino Shozo , Tanimoto Juichi

    … e measurement, scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX) analysises were performed.</p><p>From the results of the AC impedance measurement, we found that the printed circuit board has three resistance components.</p><p>It is suggested that the resistance components are derived from the insulator of the printed wiring board, the surface

    Journal of The Japan Institute of Electronics Packaging 23(3), 239-242, 2020


  • Special Issue on MEMS for Robotics and Mechatronics

    Esashi Masayoshi , Tanaka Shuji , Aoyagi Seiji , Mineta Takashi , Suzumori Koichi , Dohi Tetsuji , Miki Norihisa

    … <p>MEMS (Micro Electro Mechanical Systems) is a technology that is used to incorporate sensors, actuators, microstructures, and circuits on chips by using a combination of various technologies with semiconductor process. …

    Journal of Robotics and Mechatronics 32(2), 279-280, 2020


  • Macro-micro interaction mechanism between FRPC pile and sand under horizontal bidirectional load

    CAO Xiaolin , Dai Guoliang , Gong Weiming

    … <p>FRPC pile is a new type of composite pile formed by combining FRP material with traditional material. … It has good physical and chemical erosion resistance, light weight, high strength and other advantages. … Based on the particle image velocity measurement (PIV) technique, this paper studies the interaction between sand soil and FRPC pile by applying bidirectional horizontal load on the FRPC model pile embedded in sand soil. …

    Japanese Geotechnical Society Special Publication 8(7), 251-255, 2020


  • Investigation of Corrosion Resistance Enhancement for Biodegradable Magnesium Alloy by Ball Burnishing Process

    Cao Chenyao , Zhu Jiang , Tanaka Tomohisa , Pham Dinh Ngoc

    … <p>Magnesium and magnesium-based alloys are considered ideal materials for implants in orthopedic treatment because their stiffness is close to that of human bones, and they can be absorbed gradually in the human organism. … However, a major issue in their actual application is that the corrosion speed of Mg alloys is very high in aggressive environments such as the human fluids. …

    International Journal of Automation Technology 14(2), 175-183, 2020


  • Measurement of Light Emission with Partial Discharge at the Stator Coil End of a Rotating Machine under Operating Temperature  [in Japanese]

    Onoda Takaaki , Kumada Akiko , Hidaka Kunihiko , Umemoto Takahiro , Nakamura Takahiro , Karasawa Kazunari

    … <p>The stator coil end of a rotating machine has the structure of electric field grading system (SG system) for the purpose of preventing partial discharge. … Light emission of partial discharge at such SG on a model bar system under operating temperature is measured by a photomultiplier tube and a digital camera equipped with an image intensifier. … It is found that light emission of PD on SG system decreases under operating temperature. …

    IEEJ Transactions on Fundamentals and Materials 140(2), 70-71, 2020


  • Improving surface temperature measurement of the power cable and insulated busbar using the heat insulated layer

    TANG Liezheng , RUAN Jiangjun , LI Guannan , YIN Xuefeng

    … <p>The surface temperature measurement is susceptible to the surrounding air for the cable or the insulated busbar laid in free air. … Therefore, an approach for improving their surface temperature measurements by covering the temperature sensor with a heat insulated layer is put forward. …

    Journal of Thermal Science and Technology 15(1), JTST0002-JTST0002, 2020


  • A Retrofit Passive Foldable Snow Shoe for A Legged Robot to Walk on Snowfield

    HAKAMADA Go , MIKAMI Sadayoshi

    … The device works like a snowshoe for human and prevents the robot from sinking in or slipping on the snow surface. … Comparing to a bipedal human, a multi-legged robot has much larger numbers of legs and their ranges of movement are limited. … To overcome these problems, this paper proposes an automatic retraction and expansion mechanism of wide snow-contacting framings which are passively operated by gravitation. …

    International Journal of Mechanical Engineering and Robotics Research 8(6), 867-872, 2019-11



    SUZUKI Tatsuro , HASEMI Yuji , KAMIKAWA Daisuke , YASUI Noboru , KAKU Chihiro , SUZUKI Jun-ichi

    … <p> A small sensor for the dynamic measurement of local moisture content within a wooden member exposed to fire heating is developed. … Time variation of local moisture content of a wooden member during fire tests has not been grasped for the lack of non-destructive measurement system suitable for high temperature. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (762), 1123-1133, 2019-08



    MUSYA Ukyo , TAKASE Yuya , ABE Takahide , SAKAMOTO Keita , HIWATASHI Takeshi , KATORI Keiichi

    … <p>When buildings are seismically retrofitted, new members are connected to existing members by roughened concrete surface. … To evaluate the shear strength of the roughened concrete, the shapes of roughened concrete were measured using 3D scanner, then we conducted the shear loading tests. …

    AIJ Journal of Technology and Design (59), 55-60, 2019-02


  • Measurement of Partial Discharge at the Stator Coil End of a Converter-fed Rotating Machine under Operating Temperature  [in Japanese]

    小野田 貴亮 , 熊田 亜紀子 , 日髙 邦彦 , 梅本 貴弘 , 中村 隆央 , 野嶋 健一 , 柄沢 一成

    電気学会研究会資料. HV = The papers of technical meeting on high voltage engineering, IEE Japan 2019(36-47・49-53), 79-84, 2019-01-25

  • Measurement of Partial Discharge at the Stator Coil End of a Converter-fed Rotating Machine under Operating Temperature  [in Japanese]

    小野田 貴亮 , 熊田 亜紀子 , 日髙 邦彦 , 梅本 貴弘 , 中村 隆央 , 野嶋 健一 , 柄沢 一成

    電気学会研究会資料. DEI 2019(16-27・29-33), 79-84, 2019-01-25

  • Measurement of Adsorption/Desorption Rate of Water Vapor to a Silica gel Thin Film Coated on a Surface of a Cross-fin Tube Heat Exchanger (特集 デシカント空調に関わる最新技術)

    OUCHI Takafumi , HAMAMOTO Yoshinori , MORI Hideo

    日本冷凍空調学会論文集 = Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 36(3), 157-163, 2019

  • The surface responsivity of a SnO<sub>2</sub> thin film gas sensing device for the highly sensitivity  [in Japanese]

    Kometani Reo , Mita Yoshio , Warisawa Shin'ichi , Ueki Ryotaro , Khemnat Penekwong , Yoshihara Kenta , Kunori Shinji , Ikeda Katsuya , Sashida Kazuyuki , Yoshida Kenichi , Yamada Ichiro

    … <p>Tin dioxide (SnO<sub>2</sub>) is a useful material in order to achieve the measurement of low concentration gases for various application such as application of environment monitoring and healthcare. … In this study, basic characteristics of SnO<sub>2</sub>-based gas sensing device was evaluated for the highly sensitive gas detection. …

    The Proceedings of the Symposium on Micro-Nano Science and Technology 2019.10(0), 20am2PN315, 2019


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