CiNii Articles - Fracture Mechanics

1

INFLUENCE OF WELDING CONDITIONS ON CROSS-WELDING JOINT PERFORMANCE OF DEFORMED REINFORCING BARS [in Japanese]

OKADA Tateyoshi , TAKAHASHI Tatsuya , KANAKUBO Toshiyuki

… The objectives of this study are to investigate the influence of welding conditions on welding strength and fracture patterns and to evaluate the structural performance of beam specimens with the parameters of welding conditions. 2. … As the results, three types of fracture patterns are observed (weld peeling, welding point breakage and breakage of base bar). …

Journal of Structural and Construction Engineering (Transactions of AIJ) 86(779), 127-134, 2021

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2

Prediction Method of Void Distribution near Punched Surface of Medium-Carbon Steel Sheet using Scrap

Saito Ken , Inoue Chikara , Ikegawa Jin , Yamazaki Kazuhiko , Goto Sota , Takamura Masato , Mihara Shunsuke , Suzuki Shinsuke

… This study investigated the correlation of void distribution near punched fracture surfaces of the blank and scrap in medium-carbon steel. … The voids near the punched fracture surfaces of the blank and the scrap were measured using SEM images. … The voids of the blank and the scrap were distributed point-symmetrically with respect to the center of the fracture surface. …

ISIJ International 61(1), 417-423, 2021

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3

Deformation and Fracture Analysis by In Situ and Atomic-resolution Transmission Electron Microscopy [in Japanese]

Tochigi Eita , Miao Bin , Kondo Shun , Sato Takaaki , Shibata Naoya , Fujita Hiroyuki , Ikuhara Yuichi

Materia Japan 60(1), 35-39, 2021

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4

Fracture mechanical consideration of irreducible penetrated trochanteric fracture of femur [in Japanese]

佐藤朗 , 湊泉 , 野崎あさみ , 原利昭 , 笹川圭右 , 尾田雅文

整形・災害外科 63(12), 1713-1719, 2020-11
5

3D J-integral evaluation for solids undergoing large elastic–plastic deformations with residual stresses and spatially varying mechanical properties of a material

Hiroshi Okada , Tatsuro Ishizaka , Akira Takahashi , Koichiro Arai , Yasunori Yusa

… In this paper, a 3D J-integral based on the domain integral approach is presented for large deformation elastic–plastic fracture mechanics problems associated with residual stresses and spatially varying mechanical properties of a material. …

Engineering Fracture Mechanics (236), 107212, 2020-09

IR
6

Special Lecture(22nd)How Is It Decided Whether Casting Defect Is Harm or Harmless? : Application of Fracture Mechanics for Castings [in Japanese]

野口徹

素形材 61(7), 61-67, 2020-07
7

Development of Visualization Method of Risk for Maintenance Management [in Japanese]

小嶋正義 , 高橋秀治 , 内田俊介 , 岡田英俊 , 木倉宏成

保全学 = Maintenology 19(2), 117-124, 2020-07
8

Experimental Study of the Nonlinear Flow Characteristics of Fluid in 3D Rough-Walled Fractures During Shear Process

Wang Changsheng , Jiang Yujing , Liu Richeng , Wang Chen , Zhang Zhenyu , Sugimoto Satoshi

… Each rough-walled fracture was replicated in four specimens, which were sheared at different displacements under normal stresses that varied from 0.5 to 2.0 MPa. … Visualization tests show that the number of flow paths is large when the shear displacement is small due to various distributions of the contact areas and that the flow of dyed water over the entire fracture decreases. …

Rock Mechanics and Rock Engineering 53(6), 2581-2604, 2020-06-01

IR
9

Relation between Cutting Resistance and Crack Progress [in Japanese]

吉田史郎

計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 25, 5p, 2020-06
10

Effects of laser peening on the fatigue strength and defect tolerance of aluminum alloy

Takahashi Koji , Kogishi Yuta , Shibuya Norihito , Kumeno Fumiaki

… Accordingly, the defect tolerance of the aluminum alloy subjected to LP is discussed on the basis of fracture mechanics. …

Fatigue & Fracture of Engineering Materials & Structures, 2020-01-24

IR
11

EVALUATION ON PLASTIC DEFORMATION CAPACITY OF STEEL BEAM ENDS WITH LOCAL BUCKLING AND FRACTURE UNDER CYCLIC LOADING USING FE ANALYSIS [in Japanese]

SAWAMOTO Yoshikazu , KUBOTA Jun , OHSAKI Makoto

… To prevent damage under such ground motion, evaluation on deformation capacity of steel member (welded beam end, etc.) has been required under multi-cycle loading. In this paper, deformation capacity of the steel beam with local buckling and ductile fracture is assessed by the FE analysis based on the fracture rule (cyclic damage rule and monotonic damage rule) and recontact of removed element. …

Journal of Structural and Construction Engineering (Transactions of AIJ) (767), 105-115, 2020-01

J-STAGE AIJ
12

Finite Element Modeling and Damage-Failure Simulation of Laminated CFRP Components for Vehicle Crash Simulation [in Japanese]

西正人 , 西原剛史 , 河村力 , 齊藤啓 , 金本俊介 , 西川雅章 , Ren Bo

日本複合材料学会誌 46(6), 256-264, 2020
13

Analysis of J-Integral for Adhesive Joints by Finite Element Method [in Japanese]

大宮正毅 , 今中誠

日本接着学会誌 = Journal of the Adhesion Society of Japan : adhesion 56(11), 456-462, 2020
14

Improvement of Fatigue Properties and Making Surface Defect Harmless for High Strength Steel by Ultrasonic Shot Peening [in Japanese]

岡田秀樹 , 高橋宏治

ばね論文集 (65), 21-25, 2020
15

A FUNDAMENTAL STUDY ON THE EFFECTS OF STRESS TRIAXIALITY ON THE DYNAMIC MECHANICAL PROPERTIES OF SS400 STEEL [in Japanese]

HAMADA Shori , BEPPU Masuhiro , TSUTSUMI Seiichiro , ICHINO Hiroyoshi

<tt>鋼材の静的力学特性の特徴として，多軸応力状態において破断ひずみが小さくなることが実験的に知られている．一方で，鋼材の動的力学特性については，降伏応力および引張強度のひずみ速度効果を調べた研究例はあるが，応力三軸度の影響を調べた例は非常に少ないのが現状である．本研究は，切欠きを有する </tt>SS400 <tt>平板試験体の動的引張試験 …

Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 76(2), I_379-I_387, 2020

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16

MONTE CARLO SIMULATIONS ON MESO-SCALE HETEROGENEITY OF CONCRETE BY A DAMAGE MODEL [in Japanese]

SASAKI Hiromu , KATO Takumi , KURUMATANI Mao

本論文では，コンクリートのメゾスケールにおいて，粗骨材と破壊挙動の関係を統計的に検討することを目的として，粗骨材の粒径や分布性状を変化させたモンテカルロシミュレーションを実施した．破壊挙動のモデル化と数値解析には，異種材料による非均質性を反映可能な損傷モデルを適用し，メッシュ生成に要するコストを削減するとともに，試行回数を多くすることで，モンテカルロシミュレーションの高精度化を行 …

Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 76(2), I_163-I_171, 2020

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17

Numerical Study for the Effect of Shape of Additional Weld on Fatigue Strength in Out-of-Plane Gusset Welded Joint

TSUTSUMI Seiichiro , BUERLIHAN Ayang , FINCATO Riccardo , KOTANI Yuki , TSUYAMA Tadahisa

… The crack initiation and crack propagation simulations were conducted using elastoplastic and linear fracture mechanics analyses, respectively. …

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 38(2), 163s-167s, 2020

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18

Fatigue crack initiation and propagation life assessment of butt joint considering the effect of corrosion

TSUTSUMI Seiichiro , NAGAHAMA Hirokazu , FINCATO Riccardo

… On the other hand, the crack propagation was taken into account based on linear fracture mechanics considering SIF ranges and an extension of the Paris' law to consider the corrosion effect. …

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 38(2), 168s-171s, 2020

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19

Finite element analysis of diffuse idiopathic skeletal hyperostosis [in Japanese]

Kobayashi Takaomi , Guo Shu , Morimoto Tadatsugu , Todo Mitsugu , Maeda Kazumasa , Yoshihara Tomohito , Hirata Hirohito , Toda Yu , Mawatari Masaaki

びまん性特発性骨増殖症（DISH）における椎体骨折メカニズムを，有限要素法を用いて調査した．DISH例と正常脊椎例で，T6-T10における低エネルギーの伸展外力による相当応力と破壊状態を比較した．DISH例では骨化靭帯と後方コラムへの応力集中を認め，尾側胸椎の椎体中央部を起点とした3 columnの破壊をきたした．一方，対照例では後方コラムへ応力集中と破壊をきたした．DISH例で …

Journal of Spine Research 11(12), 1333-1338, 2020

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20

Near-Threshold Fatigue Crack Propagation in Biomedical Titanium Alloy Ti-29Nb-13Ta-4.6Zr with Low Young's Modulus [in Japanese]

KIKUCHI Shoichi , KAWAI Takao , NAKAI Yoshikazu , NAKAMURA Yuki , AKAHORI Toshikazu

A beta-titanium alloy, which has good biocompatibility and low Young's modulus, is expected to use for biomedical applications. In this study, in order to investigate the near-threshold fatig …

Journal of the Society of Materials Science, Japan 69(12), 875-881, 2020

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