Search Results 1-20 of 169

  • Inherent Strain Analysis Using Experimental Multi-layer Model for Electron-Beam-Melted Parts

    TADANO Satoshi , NAKATANI Yujiro , HINO Takehisa , OHNISHI Haruki , TSUJI Daisuke , TANAKA Tooru

    … Finite element analysis (FEA) based on the inherent strain method using a voxel mesh is an effective prediction method due to its reasonable analysis time, and to efficiently implement the prediction, a method of easily and accurately defining the inherent strain value is required. … In this study, an analysis method based on multi-layer model theory was proposed to evaluate the inherent strain applicable to electron beam melting. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 39(1), 1-10, 2021

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  • Future perspectives of mumps vaccine  [in Japanese]

    KIDOKORO Minoru

    日本では国産おたふくかぜワクチンによる無菌性髄膜炎への懸念から定期接種化が進まず,接種率の低迷に伴いムンプスの全国的流行が繰り返されている.2015-16年流行期のムンプス難聴の報告数は348例を数え,定期接種の導入は喫緊の課題である.一方,海外では122カ国で定期接種が制度化され,117カ国で2回接種を採用している.その多くが安全性に定評のあるJeryl-Lynn株を含む麻しん,風しんワクチンと …

    Uirusu 68(2), 125-136, 2019

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  • Genome-Based Epidemiological Analysis of 13 <i>Acinetobacter</i> Strains Isolated from Blood Cultures of Hospitalized Patients from a University Hospital in Japan

    Oinuma Ken-Ichi , Yamada Koichi , Shibayama Keigo , Kakeya Hiroshi , Kaneko Yukihiro , Suzuki Masato , Nakaie Kiyotaka , Sato Kanako , Saeki Kozo , Sakiyama Arata , Takizawa Etsuko , Niki Makoto , Niki Mamiko

    strains isolated from blood cultures from Osaka City University Hospital. … All strains possessed an inherent ADC-type β-lactamase gene, whereas the distribution of OXA-type enzymes was limited to <i>A. … strains as different clones, POT failed to distinguish three of the four <i>A. … strains from each other, highlighting a potential pitfall that may be encountered when applying POT to non-epidemiological <i>A. …

    Japanese Journal of Infectious Diseases 72(4), 274-280, 2019

    J-STAGE  Ichushi Web 

  • Measurement of the Effectiveness of Half Value Breadth of X-ray Diffraction Profile for Residual Stress Analysis using FEM Based on the Inherent Strain Methodology on the Cold-formed Part  [in Japanese]

    MATSUDA Mariko , OKITA Keisuke , NAKAGAWA Tomokazu , SASAKI Toshihiko

    … The inherent strain method using FEM is one of the most effective measures for predicting the internal residual stress distribution for large forged structures, because of the depth of the residual stresses. …

    Journal of the Society of Materials Science, Japan 68(4), 332-337, 2019

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  • Application of X-ray stress measurement for residual stress analysis by inherent strain method - Comparison of cos<i>α</i> and sin<sup>2</sup><i>Ψ</i> method-

    MATSUDA Mariko , OKITA Keisuke , NAKAGAWA Tomokazu , SASAKI Toshihiko

    … The inherent strain method is one of the most effective measures for predicting the internal residual stress distribution. … The residual stresses within a body are caused by internal permanent strains known as inherent strain or eigenstrain. … In the case of cold formed components, the inherent strains are induced by plastic deformation. …

    Mechanical Engineering Journal 4(5), 17-00022-17-00022, 2017

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  • X-ray Study of Phason Strains in an AlCuFeMn Decagonal Phase

    Yang Wang , Ando Tomoyo , Yamamoto Kazuki

    … <p>The peak profiles, shifts, and splittings of Bragg reflections, which are inherent in the phason strain of a quasicrystal, are carefully examined using a precise powder X-ray diffraction method for a wide range of different AlCuFeMn alloys and annealing temperatures. … These phases have linear phason strains <i>θ</i><sub>1</sub> …

    MATERIALS TRANSACTIONS 58(6), 847-851, 2017

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  • Application of X-ray stress measurement for residual stress analysis by inherent strain method - Comparison of cosα and sin2Ψ method-

    Matsuda Mariko , Okita Keisuke , Nakagawa Tomokazu , Sasaki Toshihiko , Sasaki Toshihiko

    … The inherent strain method is one of the most effective measures for predicting the internal residual stress distribution. … The residual stresses within a body are caused by internal permanent strains known as inherent strain or eigenstrain. … In the case of cold formed components, the inherent strains are induced by plastic deformation. …

    The Japan Society of Mechanical Engineers, Mechanical Engineering Journal 4(5), 17-00022, 2017

    IR  DOI 

  • Residual stress analysis considering phase transformation and transformation plasticity for heat-treated large shaft  [in Japanese]

    YANAGISAWA Yusuke , KOEDA Hideo , SASAKI Katsuhiko

    … In this report, the residual stress distribution of the test material after water-cooling and air-cooling was measured based on inherent strains, and heat treatment simulations considering the phase transformation and transformation plasticity were performed. …

    Transactions of the JSME (in Japanese) 82(834), 15-00520-15-00520, 2016

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  • Anisotropic Alteration of Scleral Birefringence to Uniaxial Mechanical Strain

    Nagase Satoko , Yamanari Masahiro , Tanaka Ryosuke , Yasui Takeshi , Miura Masahiro , Iwasaki Takuya , Goto Hiroshi , Yasuno Yoshiaki , 安野 嘉晃

    … The birefringence of the sample was measured by PS-OCT at the center of the sample before applying, denoted as inherent birefringence, and after applying stretching of 6.5% strain. … Twenty and 19 porcine eyes were stretched in meridional or equatorial directions, respectively.ResultsA moderate positive correlation was found between the inherent birefringence and the structural stiffness. … A moderate positive correlation was also found between the inherent birefringence and the tangent modulus. …

    PLoS ONE 8(3), e58716, 2013-03

    IR 

  • Self-centering composite metal damper consisting of super-elastic and super-plastic metals  [in Japanese]

    Goto Yoshiaki , Ebisawa Takemasa , Wada Hiroto , Matsuzawa Akira

    … Energy dissipating devices do not necessarily reduce the residual displacements of structures, unless they have any inherent self-centering capability. … An excellent re-centering capability of the super-elastic metal under large strains makes possible a self-centering characteristic for dampers with wider ranges of length, while the large energy dissipating capacity of the super-plastic metal make up for the insufficient energy dissipating capacity of the super-elastic metal. …

    Kozo Kogaku Ronbunshu. A (Journal of Structural Engineering. A) 59A(0), 540-551, 2013

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  • On crack propagation analysis under a residual stress field (mappings of inherent strains and residual stresses)  [in Japanese]

    西川 豊康 , 菅原 昂太 , 岡田 裕

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 17, 4p, 2012-05

  • Development of Nondestructive Hybrid Measuring Method for Three-dimensional Residual Stress Distribution of Thick Welded Joint:- Hybrid Measuring Method of Inherent Strain Method and Neutron Diffraction Method -  [in Japanese]

    NAKACHO Keiji , KASAHARA Norifumi , TAMURA Ryota

    … The inherent strain method (ISM) is destructive one. … In the analysis, the strains measured by the NDM without destruction are used. … In the simulation, the reliable order of the strains measured by the present NDM is very important, and was considered as 10 micro. … Under the above conditions, the data (the residual elastic strains assumed to be measured by the NDM) were made, and used in the ISM. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 30(4), 354-364, 2012

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  • Measurement of Welding Residual Stresses of Reactor Vessel by Inherent Strain Method:- Application of Least Squares Method with Cut for More Accurate Estimation -  [in Japanese]

    NAKACHO Keiji , TANAKA Yosuke , TAMURA Ryota , OGAWA Naoki

    … The inherent strain method is applied to measure the welding residual stress of the joint accurately. … The inherent strain method is an analytical method which solves an inverse problem using a least squares method.<br>For more accurate estimation, the robust estimation is applied to the inherent strain method. … The data of the measured strains are selected, based on the residuals. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 30(1), 50-59, 2012

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  • Results of ITER Toroidal Field Coil Cover Plate Welding Test  [in Japanese]

    KOIZUMI Norikiyo , MATSUI Kunihiro , SHIMIZU Tatsuya , NAKAJIMA Hideo , IIJIMA Ami , MAKINO Yoshinobu

    … The analysis using inherent strains, which are derived from the welding test using flat plates, also indicates that better local flatness can be achieved if the initial distortion is zero. … In addition, the welding deformation of a full-scale RP is evaluated via analysis using the inherent strain. …

    TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 47(3), 186-192, 2012

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  • Boundary Element Inverse Analysis with Regularization for Estimating Welding Residual Stress Distribution in Butt-Welded Plate

    OHTAKE Yasuhiro , KUBO Shiro

    … In previous papers, a method of thermo-elastic boundary element inverse analysis was proposed to estimate the inherent strains in the butt-welded plate. … It was found in the papers that the accuracy of the evaluated inherent strain in the butt-welded plate was low when the location of the measurement points was far from the welding line or the number of measurement points was small. …

    Journal of Solid Mechanics and Materials Engineering 6(6), 598-609, 2012

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  • P-25 Synthetic Study of Pyrrocidine B(Poster Presentation)  [in Japanese]

    Tanaka Ryo , Ohishi Kentaro , Takanashi Noriyuki , Nagano Tomohiko , Suizu Hiroshi , Suzuki Takahiro , Kobayashi Susumu

    … In 2002, pyrrocidine A and B were isolated from the fermentation broth of a fungus, LL-Cyan 426, as antimicrobial agents against Gram-positive bacteria including drug-resistant strains. … Owing to the inherent convex-face selectivity of cis-fused bicyclic AB-ring moiety of 4, nitrile 19 was stereoselectively synthesized in several steps. …

    Symposium on the Chemistry of Natural Products, symposium papers 54(0), 339-344, 2012

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  • Three-dimensional Measurement of Welding Residual Stress of Thick Coolant Pipe Joint in Nuclear Reactor Plant by Inherent Strain Method  [in Japanese]

    NAKACHO Keiji , MAEKAWA Akira , SATO Reiko , KASAHARA Norifumi , AOKI Keisuke

    … In this study, the inherent strain method combined with Finite Element Method (FEM) is applied to measure the welding residual stress accurately.<br>A mock-up for a welded joint at a coolant pipe of an actual nuclear reactor was manufactured for the study. … The inherent strain method is used to measure the three-dimensional residual stress distribution. … In this method, the inherent strains are unknowns. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 29(4), 335-345, 2011-12-31

    J-STAGE  References (8)

  • Improvement of Accuracy Estimated Welding Residual Stress of Reactor Vessel By Inherent Strain Method:Application of least squares method with cut  [in Japanese]

    Nakacho Keiji , Tanaka Yosuke , Tamura Ryota , Ogawa Naoki

    著者らは、原子炉圧力容器管台貫通溶接部の残留応力を固有ひずみ法により測定する研究を進めている。その測定精度をさらに向上させるため、ロバスト推定法のひとつであるカット付き最小二乗法を適用してみた。使用する計測ひずみを選択することにより、残留応力を選択することにより、残留応力の推定精度を大幅に向上させることができた。

    Preprints of the National Meeting of JWS 2011f(0), 76-76, 2011

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  • OS10F042 Boundary Element Inverse Analysis with Regularization for Estimating Welding Residual Stress Distribution in Butt-Welded Plate

    OHTAKE Yasuhiro , KUBO Shiro

    … The welding residual stresses in the butt-welded plate are caused by inherent strains. … Thus, the welding residual stresses are calculated from the inherent strains in the stress analysis, if the inherent strains are estimated from measurement data by inverse problem analysis. …

    The Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10(0), _OS10F042--_OS10F042-, 2011

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  • Measurement of Welding Residual Stresses of Reactor Vessel by Inherent Strain Method : Diagnosis of Strain Measurement Region for Accurate and Economical Study  [in Japanese]

    OGAWA Naoki , NAKACHO Keiji

    … Welded joints in nuclear reactors have complex shapes, and the welding residual stresses have complex three-dimensional distributions.<br>The inherent strain method is an analytical method that solves an inverse problem using a least squares finite element method. … In this method, the inherent strains are unknowns. … The inherent strain distribution is therefore expressed with an appropriate function, significantly decreasing the number of unknowns. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 28(2), 208-215, 2010-12-31

    J-STAGE  References (9)

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