Search Results 1-15 of 15

  • HYSTERESIS CURVE MODEL FOR KYOTO MUD WALL BASED ON CYCLIC LOADING TESTS  [in Japanese]

    MURAMOTO Makoto , GORAI Takaaki

    … The hysteresis model of the mud wall has three curves of virgin load curve, return curve and reloading curve. … In the previous model, it was necessary to adjust the parameter of the curve equation individually based on the experiment.</p><p> In this paper, we propose a hysteresis model with the maximum load point as a parameter. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 229-239, 2020-02

    J-STAGE  AIJ 

  • Method of Estimated Unloading Curve for Evaluation of Interfacial Strength by Nanoindentation Test

    KOZUKI Kentaro , INABA Kazukaki , KISHIMOTO Kikuo

    … In this method, the released energy due to a coating delamination is obtained by estimating the shapes of the unloading curve at the points just after and before delamination on the load-displacement curve. … Shape of unloading curves can be assumed by obtaining the contact stiffness of thin films. …

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 77(776), 629-637, 2011

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  • Change of Young's Modulus with Increasing Applied Tensile Strain in Open Cell Nickel and Copper Foams

    OCHIAI Shojiro , NAKANO Satoshi , FUKAZAWA Yuya , ALY Mohamed Shehata , OKUDA Hiroshi , KATO Komei , ISOBE Takeshi , KITA Koichi , HONMA Keiichi

    … Stress-strain curves were measured at room temperature, in which the loading-unloading-reloading process was performed on the sample at various applied strains. … The Young’s modulus values at various applied tensile strains were estimated from the slope of the elastic region in the stress-strain curve in the unloading process. …

    MATERIALS TRANSACTIONS 51(5), 925-932, 2010-05-01

    IR  J-STAGE  References (21)

  • The Relation of Crystallographic Plane with Strength and Deformation Properties of High Purity Aluminum Single Crystals during Nanoindentation  [in Japanese]

    YOSHIDA Masashi , SUMOMOGI Tsunetaka , KINO Takao , OKUMIYA Masahiro , TSUNEKAWA Yoshiki

    … The yielding behavior is also observed at an unloading stage under some conditions. … The critical shear stress is estimated from the yield load in the loading curve. … The estimated stress shows close agreement with the ideal strength of aluminum. …

    Journal of the Japan Institute of Metals and Materials 73(2), 95-102, 2009-02-01

    J-STAGE  References (16)

  • Evaluation Method for Stress-Strain Relationship of Materials in Microstructural Region Using Triangular Pyramidal Indenter  [in Japanese]

    HIGUCHI Ryota , MOCHIZUKI Masahito , TOYODA Masao

    … An existing evaluation method using a ball indenter is correspondingly applied to the evaluation method using a triangular pyramidal indenter because the strain distribution under the indenter or the indentation curve on the unloading process between the ball and pyramidal indentation has a similarity. … The stress-strain relationships of single phase steels in microstructural size are estimated by the proposed method, and averagely correspond with those measured by macro-tensile tests. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 27(2), 115-123, 2009

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  • Impact-Force Estimation by Quadratic Spline Approximation

    GUNAWAN Fergyanto E. , HOMMA Hiroomi , MORISAWA Yuichi

    … The approximation results in a small size, ill-posed, and rank-deficient system equation, which is then solved by the truncated singular value decomposition and L-curve methods. … The proposal that is verified by three impact-force problems provides acceptable estimated impact-forces. … However, the estimated impact-force in the unloading part rather oscillates in particular when the data are severely contaminated with the noise. …

    Journal of Solid Mechanics and Materials Engineering 2(8), 1092-1103, 2008

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  • Verification of the unloading curve for polycrystalline graphite estimated from stress-strain relation during loading  [in Japanese]

    Furushima Ryoichi , Yasuda Kouichi , Matsuo Yohtaro , Shiota Tadashi

    多結晶黒鉛に圧縮応力を負荷・除荷した時に得られる応力-歪曲線は、非線形挙動を示すことがわかっている。この非線形挙動を材料中に発生したマイクロクラックによるみかけのヤング率の減少が要因であると仮定し、安田が損傷発生歪分布関数を用いて任意の歪における応力を求める理論を提案した。この理論において、除荷過程の応力は、負荷過程の応力-歪曲線を推定するために必要なパラメータを用いて求められる。そこで本研究では …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2007F(0), 758-758, 2007

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  • Structure and Properties of Segmented Poly(urethane-urea) Elastic Fibers:Part 2: Hysteresis of Stress-Strain Curves

    Nori YOSHIHARA , Hideaki ISHIHARA

    … The effects of pre-elongation ratio, stress relaxation time and recovery time on the hysteresis behavior of the stress-strain curve are discussed for segmented Poly(urethane-urea).<br>The loss of stress and extension energy was found to be much larger than unrecovered strain with pre-elongation. … In the range of low extension ratio of α<2, the large loss in shear modulus was shown for unloading and re-elongation curves. …

    Journal of Textile Engineering 48(2), 64-69, 2002

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  • Structure and Properties of Segmented Poly(urethane-urea) Elastic Fibers. Part 2: Hysteresis of Stress-Strain Curves.:Part2 : Hysteresis of Stress-Strain Curves  [in Japanese]

    YOSHIHARA Nori , ISHIHARA Hideaki

    … The effects of pre-elongation ratio, stress relaxation time and recovery time on the hysteresis behavior of the stress-strain curve are discussed for segmented poly (urethane-urea).<BR>The loss of stress and extension energy was found to be much larger than unrecovered strain with pre-elongation. … In the range of low extension ratio of α<2, the large loss in shear modulus was shown for unloading and re-elongation curves. …

    Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 54(3), T43-T49, 2001

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  • High-Pressure Phase Transformation of Cobalt Monoxide Due to Electronic Transition

    NOGUCHI Yuichi , ATOU Toshiyuki , KONDO Tadashi , YAGI Takehiko , SYONO Yasuhiko

    Japanese Journal of Applied Physics Pt. 2 Letters 38(1), 7-9, 1999-01-01

    References (15)

  • High-Pressure Phase Transformation of Cobalt Monoxide Due to Electronic Transition.

    Noguchi Yuichi , Atou Toshiyuki , Kondo Tadashi , Yagi Takehiko , Syono Yasuhiko

    … 1 GPa from the measurements of shock compression curve. … The volume decrease accompanied by the phase transition was estimated to be about 5%. … The high-pressure phase was reversibly transformed to the ambient phase on unloading. …

    Japanese Journal of Applied Physics 38(1A/B), L7-L9, 1999

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  • ONE-DIMENSIONAL VOLUME CHANGE CHARACTERISTICS OF SANDS UNDER VERY LOW CONFINING STRESSES :

    YOSHIMI YOSHIAKI , KUWABARA FUMIO , TOKIMATSU KOHJI

    … The coefficient of volume change during unloading was around one-fifth of that during post-liquefaction compression for loose or very loose sand from Niigata. … On the basis of the test results, the average vertical strain of a horizontal layer of sand during consolidation under its own weight following liquefaction was estimated to be on the order of a few per cent. …

    Soils and Foundations 15(3), 51-60, 1975

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  • Creep Behaviors of 2 1/4Cr-1Mo Steel under Cyclic Unloading and Reloading

    TAIRA Shuji , SUZUKI Fusayuki , TAMADA Isao

    … When the cyceic stress removal is given creep curves, show the differences from steady load creep curve.<br>As the a result of this experiment, creep curves of stress removal are shown upper or lower than steady load creep curves, but the difference between lower creep curve of stress removal and steady load curve is very small. … So in this experiment, by considering creep recovery only, creep curve of stress removal can be estimated well. …

    Journal of the Society of Materials Science, Japan 12(114), 148-153, 1963

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  • Study on the resistance of cargo oil piping system of the large tanker  [in Japanese]

    下川 寛人

    … (3) Shortening of the unloading operation with large cargo pump. … (1) Welded steel pipe, which is fabricated at shipyard, can be assumed as an ordinary seamless steel pipe from resistance point of view if its roughness is estimated right. … In another word, there is a remarkable hollow on the curve of coefficient of formal resistance C, and Reynolds' …

    TRANSACTIONS OF THE WEST-JAPAN SOCIETY OF NAVAL ARCHITECTS 23(0), 43-79, 1962

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  • 2) EXPERIMENTAL STUDY OF THE FULL-SIZED REINFORCED CONCRETE BEAMS SUBJECTED TO THE ALTERNATE LOADING  [in Japanese]

    TAKEDA TOSHIKAZU , 後藤 寿三

    … Tests were carried out by alternate loading or by one-way loading (loading and unloading). … Summing up the results of this experiment, it was found that: 1) The strength of each beam is estimated by plastic theory. … 3) The ultimate strength of the beam with plain bars is ordmally estimated by their yield points. … 6) In case of one-way loading, the load-deflection curve can be figured out by elastic-plastic theory. …

    Transactions of the Architectural Institute of Japan 71(0), 7-12, 1962

    J-STAGE  AIJ 

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