Search Results 1-20 of 4924

  • Anisotropic ultimate strength and microscopic fracture patterns during tensile testing in the dentin–enamel junction region

    YAMADA Yoshihiro , INOUE Toshiko , SAITO Makoto , NISHIMURA Fumio , MIYAZAKI Takashi

    … The aim of this study was to investigate the anisotropic ultimate tensile strength of the DEJ. … Twenty dumbbell-shaped samples were prepared from 10 extracted human molar teeth for tensile strength testing. … The mean tensile strength of the samples was significantly higher under parallel forces (30.9±3.3 MPa) than under perpendicular forces (20.6±4.8 MPa; …

    Dental Materials Journal, 2020

    J-STAGE 

  • APPROXIMATE ESTIMATION METHOD FOR PROBABILITY DISTRIBUTION OF FIRST-MODE INELASTIC RESPONSE OF MULTI-STORY FRAMES:-An investigation of a framework of practical ultimate limit state design based on maximum drift-  [in Japanese]

    FURUKAWA Taishi , MORI Yasuhiro

    … state design that can control the performance level of a whole structure with limit state probability considering the effects of seismic hazard, characteristic of ground motions, and structural capacity.</p><p> Several methods have been proposed to predict the maximum inter-story drifts of multi-story frames such as the Calculation of Response and Limit Strength method introduced in the Japanese Building Code in 2000 as a seismic design rule for ordinary building structures, Inelastic Modal Predictor (IMP), and Modal Pushover Analysis …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (764), 1315-1323, 2019-10

    J-STAGE  AIJ 

  • MODIFICATION OF A SHEAR STRENGTH EVALUATION METHOD OF RC BEAMS WITHOUT STIRRUPS ON MECHANICAL COUPLERS  [in Japanese]

    MURAYAMA Shunichiro , ADACHI Tomohiro , SANADA Yasushi

    … This paper focuses on the shear strength of the above RC beams. … It indicated that the shear-resisting mechanisms might be different between NN1 and MI1.</p><p> [Effects of coupler length] In the cases with longer couplers, the truss mechanism deteriorated but the arch mechanism remained in the ultimate states (Fig. 10).</p><p> 5. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (764), 1345-1354, 2019-10

    J-STAGE  AIJ 

  • EFFECTS OF CROSS-RAILS ON STEEL SHEET SHEAR WALLS WITH BURRING HOLES:Shear stiffness and large deformation behavior  [in Japanese]

    KAWAI Yoshimichi , TOHNAI Shigeaki , NISHIZAWA Honami , SATO Atsushi , ONO Tetsuro

    … The walls changed from the elastic to plastic region and maintained stable strength. … Ultimate strength of the wall depended on tension fields restrained by cross-rails.</p><p> In this paper, new design methods are proposed for evaluating the stiffness of the walls using the idea of decreasing the band-width of the inclined tension fields with the effect of the cross-rails. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (763), 1281-1291, 2019-09

    J-STAGE  AIJ 

  • SUPERIOR DESIGN SOLUTIONS OF SECTION SIZES IN STEEL BUILDINGS FOR DIFFERENT LATERAL FRAME SYSTEMS AND COLUMN SHAPES  [in Japanese]

    TAKAGI Jiro , OBANA Ruka , OHSAKI Makoto

    … The solutions satisfy multiple requirements of the allowable stress design and ultimate lateral strength. … The findings are as follows:</p><p> </p><p> (1) Superior solutions for moment frame buildings are obtained for the base-shear coefficient of the ultimate lateral strength, C<sub>QUN1</sub>, as 0.3 and 0.6. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (763), 1293-1303, 2019-09

    J-STAGE  AIJ 

  • Microstructures and the Mechanical Properties of the Al–Li–Cu Alloy Strengthened by the Combined Use of Accumulative Roll Bonding and Aging

    Tang Yongpeng , Hirosawa Shoichi , Saikawa Seiji , Matsuda Kenji , Lee Seungwon , Horita Zenji , Terada Daisuke

    … For the 2‐cycled ARB sample with aging treatment, the ultimate tensile strength and elongation to failure reach 553 MPa and 7%, which are greater than those of the ARB sample without aging treatment (i.e., 442 MPa and 1%). … The corresponding TEM microstructures suggest that the refined δ′–Al3Li particles formed by spinodal decomposition are responsible not only for higher hardness and strength but also for the optimized strength–ductility balance. …

    Advanced Engineering Materials, 2019-07-30

    IR 

  • Influence of solvent evaporation on ultimate tensile strength of contemporary dental adhesives

    Kameyama Atsushi , Haruyama Akiko , Abo Hirokazu , Kojima Masashi , Nakazawa Yuichi , Marumatsu Takashi , 亀山 敦史

    … The aim of this study was to evaluate the influence of solvent evaporation on the ultimate tensile strength (UTS) of commercial adhesives. … In conclusion, residual solvent reduces the mechanical strength of the adhesive. … The hydrophilicity of the adhesive resin might also affect its mechanical strength. …

    Applied Adhesion Science 7(4), 2019-07-29

    IR 

  • Strength of carbon nanotubes depends on their chemical structures

    Takakura Akira , Beppu Ko , Nishihara Taishi , Fukui Akihito , Kozeki Takahiro , Namazu Takahiro , Miyauchi Yuhei , Itami Kenichiro

    … 2019-07-11.Single-walled carbon nanotubes theoretically possess ultimate intrinsic tensile strengths in the 100–200 GPa range, among the highest in existing materials. … Here, we report the first experimental measurements of the ultimate tensile strengths of individual structure-defined, single-walled carbon nanotubes. … The strength depends on the chiral structure of the nanotube, with small-diameter, near-armchair nanotubes exhibiting the highest tensile strengths. …

    Nature Communications (10), 2019-07-10

    IR 

  • STRUCTURAL PERFORMANCE OF INTERIOR BEAM-COLUMN CONNECTIONS IN STEEL CONCRETE COLUMN-STEEL BEAM COMPOSITE STRUCTURES  [in Japanese]

    SADASUE Kazushi , KITANO Atsunori

    … Main discussion is concentrated on the failure state, ultimate strength and hysteresis characteristics.</p><p> The test results indicated that the partial frame including beam-column connection had the stable hysteresis behavior until story drift angle of 3.0-4.0% radian, and the failure was concentrated in panel zone. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (761), 1001-1010, 2019-07

    J-STAGE  AIJ 

  • SEISMIC PERFORMANCE OF A STEEL FIBER REINFORCED CONCRETE PILE CAP USING HEADED MAIN BARS IN FOUNDATION BEAMS  [in Japanese]

    KAKE Satoshi , SAKATA Masanori , TABEI Masaki , HOSHINO Masahiro , OHTA Yoshihiro , ISHIKAWA Yuji

    … <p> In this study, the seismic performance of a steel fiber reinforced concrete (SFRC) pile cap using headed bars as main reinforcement in its foundation beams was examined by a lateral loading test and a non-linear 3-dimentional FEM analysis.</p><p> In order to investigate the ultimate shear strength of the SFRC pile cap, a specimen designed to ensure a shear failure of its pile cap was prepared and tested under a lateral loading. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (761), 949-959, 2019-07

    J-STAGE  AIJ 

  • ULTIMATE SHEAR STRENGTH OF EXISTING STEEL REINFORCED CONCRETE MEMBERS WITH LOW-STRENGTH CONCRETE  [in Japanese]

    KJU KJU NWE , SADASUE Kazushi , ARAKI Hideo

    … Considered parameters were steel type, concrete strength, shear span ratio and axial load level. … According to the some reports of seismic evaluation for existing concrete buildings, it is often reported that concrete buildings have very low concrete strength.</p><p> In this paper, shear strength of SRC members with low-strength concrete are investigated through the seismic loading tests. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (761), 983-992, 2019-07

    J-STAGE  AIJ 

  • ANALYTICAL MODEL USING MULTI-SPRING MODEL FOR CES COLUMNS WITH H-SHAPED STEEL  [in Japanese]

    SUZUKI Suguru , MATSUI Tomoya

    … <p> Concrete Encased Steel (CES) structural buildings are expected to adopt the structural design by the Calculation of Response and Limit Strength and time history response analysis, hence it is necessary to confirm the validity of both restoring force characteristics models for the CES members and the accuracy of response evaluation for the CES building. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (761), 993-1000, 2019-07

    J-STAGE  AIJ 

  • Collapse Test and Numerical Simulation for Box Girder Subjected to 4-points Bending Load  [in Japanese]

    吉永 廉規 , 藤 公博 , 柳原 大輔 , 吉川 孝男

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers (28), 595-600, 2019-06

  • Modification of Smith's Method Provided in IACS CSR to Analyze Ultimate Strength of Ship Hull Girder under Longitudinal Bending  [in Japanese]

    新田 進 , 柳原 大輔 , 藤 公博 , 吉川 孝男

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers (28), 309-313, 2019-06

  • Ultimate Flexural Strength of Steel pile Top Related to Magnitude of Axial Force  [in Japanese]

    齋藤 智哉 , 佐藤 睦月 , 的場 萌子 , 廣瀬 智治 , 木村 祥裕

    日本建築学会東北支部研究報告集. 構造系 (82), 81-84, 2019-06

    AIJ 

  • IMPROVEMENT OF BEARING FAILURE BEHAVIOR OF INTERIOR S BEAM-RC COLUMN JOINTS USING HORIZONTAL PERFOBOND PLATE CONNECTORS  [in Japanese]

    YOSHIDA Mikihito , NISHIMURA Yasushi

    … Fig. 1.</p><p> Objective of this study is to propose bearing design formulae taken account of the effect of perfobond plate connectors based on the stress transferring mechanism and resistance mechanism proposed by author's previous study.</p><p> RCS beam‐column joint is assumed to be composed of the inner panel with the steel flange width and the outer panel outside the flange, and ultimate strength of the joint is assumed to be estimated by superposing that of the inner panel and the outer …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (760), 887-895, 2019-06

    J-STAGE  AIJ 

  • ROTATIONAL STIFFNESS OF STEEL CONNECTIONS FOR TIMBER LATTICE SHELL IN NEGATIVE OUT-OF-PLANE AND IN-PLANE DIRECTIONS  [in Japanese]

    NAKAJIMA Shun , YAMAZAKI Yoshihiro , SAKATA Hiroyasu , TAKEUCHI Toru , HARADA Hiroaki , HAYASHI Kenichi

    … <p> The authors have proposed effective steel connections achieving high bending stiffness and strength for timber grid-shell structures in the previous research. … They are composed of joints with T-section or H-section brackets connected to glued laminated timber section members through lag-screw bolts at flanges, their bending stiffness and strength have proved to be much higher than the ones of conventional connections. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (760), 831-841, 2019-06

    J-STAGE  AIJ 

  • A SHEAR STRENGTH OF CLT PANEL BY USING DRIFT-PIN JOINTS WITH INSERTED STEEL PLATE OF DOUBLE SHEAR TESTING  [in Japanese]

    NOUCHI Eiji , ONOTSUKA Masaki , KAWAHARA Shigeaki , ASARI Kazushige

    … Because the earthquake occurs frequently in Japan, cautious understanding on the ultimate state of CLT is necessary. … Especially the shear strength of the CLT panel as a wall and its joints are important for structural design. … In this paper, a double shear testing on the shear strength of CLT panel is reported. … The results of the testing one specimen (3layer 3ply) shows the shear strength was decreased rapidly after peak load recorded.</p> …

    AIJ Journal of Technology and Design (60), 649-654, 2019-06

    J-STAGE  AIJ 

  • GLOBAL STABILITY OF CHEVRON BUCKLING RESTRAINED BRACED FRAMES WITH VARIOUS GUSSET PLATES AND SECONDARY BEAMS  [in Japanese]

    MATSUI Ryota , TOMOEDA Katsuto , SITLER Ben , TAKEUCHI Toru , MIHARA Saki , HOASHI Yuma

    … remains constant.</p><p>  Buckling limit is determined from the ultimate strength, at the point at which the combined axial and moment demands exceed the critical hinge plastic capacity.</p><p>  Neck hinge plastic capacities at each end are assumed equal <i>M<sub>p</sub><sup>r</sup></i> …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (758), 563-573, 2019-04

    J-STAGE  AIJ 

  • Mechanical Characteristic of SRC Member with Low-Strength Concrete(Part 4)Ultimate Shear Strength of Full Web Type SRC Beam  [in Japanese]

    KJUKJUNWE , 貞末 和史 , 荒木 秀夫

    日本建築学会中国支部研究報告集 日本建築学会中国支部 編 42, 287-290, 2019-03-02

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