研究者詳細 - 黒島　義人

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85201640508&origin=inward

鋼の逆磁歪効果を利用した微小疲労き裂情報の測定～逆磁歪効果における誘導磁場出力について～査読有り

田中洸成, 野中維生, 黒島義人

材料 ( 公益社団法人日本材料学会 ) 72 ( 10 ) 729 - 736 2023年10月

担当区分：最終著者,　責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）

There is a method using a strain gauge as a dynamic measurement of micro-fatigue cracks. However, it is not always effective in term of measuring micro-fatigue cracks due to direct adhesion with the object and durability issues. Therefore, we focused on the inverse magnetostrictive effect, which is a magnetic effect of ferromagnetic materials, and measured the change of the magnetic field by a simple instrument without adhesion with glue. It is possible to measure micro fatigue crack information.In this study, the change of magnetic field around specimens caused by the inverse magnetostrictive effect was obtained and analyzed using a coil and a hall sensor. Based on a certain coil output, the coil output was estimated from the relationship between the strain rate and the coil output.

DOI： 10.2472/jsms.72.729

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85176404391&origin=inward

繰返し面内純せん断負荷下における鋼薄膜のすべりとき裂の発生挙動査読有り

森本裕, 今村隼斗, 黒島義人

材料 ( 公益社団法人日本材料学会 ) 72 ( 10 ) 713 - 720 2023年10月

担当区分：最終著者,　責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）

In the same materials, film and bulk materials show different mechanical properties. Slip and crack initiation is rare in steel thin films. The slip that does occur is also dependent on the influence of the pearlite volume ratio and the film thickness directional constraint. The slip is reported to have an in-plane shear component and an out-plane shear component. Therefore, in this study we conducted fatigue tests under in-plane pure shear loading on specimens with steel films pasted to acrylic bar. As a result, two types of slips were observed: wavy slip and single linear slip and more wavy slip occurred in pure iron and S10C, while more single linear slip occurred in S45C. Crack initiation ratio and single linear slip initiation ratio showed similar increasing behavior. In addition, wavy slips in the grain were found to be in the out-plane direction, and a single linear slip in the grain was in the in-plane direction. Wavy slip (out-plane slip) is considered to occur only in ferrite that deformation is restrained by grains existing in the thickness direction. Single linear slip (in-plane slip) is considered to be caused by concentrated slip deformation or separation of slip planes in ferrite where plastic deformation is inhibited by hard pearlite, resulting in cracks.

DOI： 10.2472/jsms.72.713

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85176421249&origin=inward

繰返し面内純せん断負荷における炭素鋼薄膜の疲労損傷発生機構査読有り

山下剛志，植田大輝，黒島義人

日本機械学会論文集 838 ( 80 ) 15 - 27 2016年06月

高強度鋼のODA型き裂進展領域における極低速き裂進展挙動査読有り

古藤正稔, 黒島義人, 吉村直也

日本機械学会論文集 815 ( 80 ) 1 - 12 2014年07月

鋼のねじり低サイクル疲労におけるManson-Coffin則の結晶粒径依存性

伊賀寛人, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2023 ( 0 ) MM0639 2023年01月

担当区分：最終著者,　責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

Many actual structures, such as piping and turbine shafts, are subjected to torsional low-cycle fatigue. However, there have been many studies on high-cycle fatigue due to torsion, but few studies on low-cycle fatigue due to torsion alone, and there are many unknown points. Fatigue tests were conducted in a torsion testing machine (490 Nm capacity) at room temperature in air, with both swings and controlled torsion angles over a specified total strain range. Cracks were observed using the replica method, in which replicas of the specimen surface were taken at regular intervals in each total strain range and observed with an optical microscope. In this study, it is shown that there is a grain size dependence of the Manson-Coffin law in torsional low-cycle fatigue and that the microcrack propagation rate is independent of crack length in torsional low-cycle fatigue.

DOI： 10.1299/jsmemm.2023.mm0639

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2023/0/2023_MM0639/_pdf

繰返し面内純せん断負荷下における炭素鋼薄膜のすべりとき裂の発生挙動

今村隼斗, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2023 ( 0 ) MM0604 2023年01月

担当区分：最終著者,　責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

Fatigue behaviors differ between thin film and bulk materials, even if they are the same material. Reports show that the incidence of grain slip saturates at 0.1 when loading is applied in the shear direction. The purpose of this study is to clarify the behavior of slip and crack initiation in carbon steel thin films subjected to cyclic shear loading. We investigated the effects of carbon content and film thickness on slip and cracks. Pure iron, S10C and S45C are selected as specimens to investigate the effect of carbon content. Then, to investigate the effect of film thickness, tests are conducted with film thickness/grain size ratio t/D less than 0.8 and greater than 1.67. A torsion bending tester (Shimadzu TB-10) is used. As a result, in-plane slips and cracks are more likely to occur with higher carbon content, while out-plane slips are more likely to occur with lower it. Increasing the t/D increased out-plane slips, but not increasing in-plane slips and cracks. The following three points are considered from this study. In-plane slips occur more frequently when the volume fraction of pearlite is large, and is considered to be caused by the concentration of strain. Out-plane slips occur more frequently when t/D exceeds 1.67, suggesting that it is caused by the deformation of crystal grains in the film thickness direction. The larger the amount of in-plane slip, the more cracks are observed, suggesting that the cracks are caused by in-plane slip.

DOI： 10.1299/jsmemm.2023.mm0604

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2023/0/2023_MM0604/_pdf

高強度鋼の真空下における超長寿命域でのき裂伝ぱ特性について

黒島義人, 入井涼介, 藤井海南斗

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2022 ( 0 ) OS0317 2022年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

In general, high-strength steel is known to occur an internally initiated fatigue fracture called "Fish-eye failure" in the very long life region. In addition, the fatigue life of a fish-eye failure is dominated by the ODA (Optically Dark Area) that forms around the fracture origin. Therefore, it is necessary to elucidate the formative mechanism of ODA in order to predict the fatigue life of fish eye failure. Besides, it has been reported that small surface cracks propagate at extremely low speeds below the lattice spacing in a vacuum simulating the interior of high-strength steel. However, it has not been confirmed that the growth of these small cracks forms ODA. In this study, fatigue tests were conducted from a very short crack to a long crack, which corresponds to internal failure in the very long life region, instead of the fatigue tests with a relatively long crack of around 150 μm that have been conducted so far. The results of intermittent observation of the growth behavior and the relationship between the crack growth rate, stress intensity factor, and maximum stress suggest that small cracks grow and form ODAs.

DOI： 10.1299/jsmemm.2022.os0317

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2022/0/2022_OS0317/_pdf

繰返し面内純せん断負荷における炭素鋼薄膜の疲労挙動

森本裕, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2022 ( 0 ) OS0328 2022年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

In the same materials, film and bulk materials show different mechanical properties. In fatigue testing of metallic thin film, several studies have been reported for axial and bending directions, however, there are few studies for shear direction. In addition, multiple parallel slips in the same grain are considered out-plane direction, a single linear slip in a grain is considered in-plane direction. Therefore, in this study we conducted fatigue tests under cyclic in-plane pure shear loading to S10C and S45C.We focused on the effect of pearlite volume fraction on slip generation and the relationship between cracks and slips. As a result, about 90% of the slip that occurred in S10C was out-plane direction. About 70% of the slip that occurred in S45C was in-plane slip. This is considered to be caused by the concentration of strain due to pearlite. In addition, more cracks were observed in S45C than in S10C, Consequently, cracks in the carbon steel film are considered to have grown from in-plane slip.

DOI： 10.1299/jsmemm.2022.os0328

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2022/0/2022_OS0328/_pdf

高強度鋼の超高サイクル域における極低速き裂進展について

飯田啓太, 黒島義人

日本機械学会九州支部講演論文集 ( 一般社団法人日本機械学会 ) 2021.74 ( 0 ) D44 2021年01月

鋼の磁歪特性を利用した微小疲労き裂の測定

跡部亮輔, 黒島義人

日本機械学会九州支部講演論文集 ( 一般社団法人日本機械学会 ) 2021.74 ( 0 ) D52 2021年01月

繰返し面内純せん断負荷下における炭素鋼薄膜のすべり発生挙動

森田隼斗, 黒島義人

日本機械学会九州支部講演論文集 ( 一般社団法人日本機械学会 ) 2021.74 ( 0 ) D54 2021年01月

低サイクルねじり疲労におけるManson-Coffin型寿命線図に与える結晶粒径の影響

古長友哉, 黒島義人

日本機械学会九州支部講演論文集 ( 一般社団法人日本機械学会 ) 2021.74 ( 0 ) D25 2021年01月

Brittle failure criteria of CNRB specimen for fracture toughness test 査読有り

KANESAKI Manato, OBUNAI Kiyotaka, FUKUTA Tadao, KUROSHIMA Yoshihito, OZAKI Koichi

Mechanical Engineering Journal ( 一般社団法人日本機械学会 ) 7 ( 4 ) 19 - 00621-19-00621 2020年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

This paper proposes a technique to determine the dimensions of a CNRB specimen to be used for plane fracture toughness tests. First, the brittle fracture behavior satisfying the small-scale yielding condition is investigated through an elasto-plastic analysis. The analysis parameters are the shape parameters such as the notch ratio of the specimen based on the parallel part diameter and notch bottom diameter; tip radius; and notch angle. Based on the analysis results obtained, a fracture toughness test is conducted on a JIS-S45C (quenched and tempered) specimen to evaluate the small-scale yielding condition. The experimental results confirm a linear relationship between the square of the value obtained by dividing the plane-strain fracture toughness by the yield stress and specimen diameter. Further, the diameter of the CNRB specimen satisfying the small-scale yielding condition varies with the shape parameters. With these results, a function that can determine the CNRB specimen diameter at which brittle failure occurs under uniaxial tensile loading is proposed and validated.

DOI： 10.1299/mej.19-00621

その他リンク： https://ci.nii.ac.jp/naid/130007887808

Fatigue Properties of Quenching and Tempering Steel Using Super Rapid Induction Heating 査読有り

FUKUTA Tadao, KUROSHIMA Yoshihito, KANESAKI Manato, OZAKI Koichi

Advanced Experimental Mechanics ( 日本実験力学会 ) 5 ( 0 ) 97 - 102 2020年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

The mechanical properties of steels are known to be improved by grain refinement and by smaller and more finely dispersed cementite particles. Super-rapid induction tempering can achieve smaller and more finely dispersed cementite particles, and super-rapid induction quenching can improve grain refinement. In this study, we investigated the fatigue properties of carbon steel treated by induction quenching and tempering using a super-rapid induction heating technique. Hollow test specimens were fabricated to observe the mechanical properties of the structure obtained by induction heating. Based on our observations, in the finite-life region, no difference was found between tempering conditions for each hardness value, but a transition to longer life due to differences in quenching conditions was observed. In addition, no clear grain refining effect was found in the fatigue limit of induction-quenched steel in the range of the quenching conditions of this study. However, a delay effect due to grain refinement was recognized at the initial stage of crack growth from the consideration of the crack growth rate of induction-tempered steel.

DOI： 10.11395/aem.5.0_97

その他リンク： https://ci.nii.ac.jp/naid/130007953457

低サイクルねじり疲労における微小き裂伝播特性とManson-coffin則の関係

氷室天, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2019 ( 0 ) OS0303 2019年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

A low cycle torsional fatigue test of carbon steel S10C for machine structural use was performed with strain control. Using a mechanism that applied Martens's mirror device, the scale was read, and the torsional torque was increased or decreased to achieve a predetermined torsional angle, and experiments were performed with total strain widths γ = 1.0%, 1.5%, and 2.0%. As a result, the propagation behavior of cracks in low cycle torsional fatigue was connected and propagated by innumerable microcracks. The fatigue life calculated by the small crack propagation law, focusing on the main crack that caused the fracture, was equivalent to the fatigue life of the Manson-Coffin's law.

DOI： 10.1299/jsmemm.2019.OS0303

その他リンク： https://ci.nii.ac.jp/naid/130007846376

面内純せん断負荷下での炭素鋼薄膜のき裂発生におよぼす金属学的因子の影響

野村拓哉, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2019 ( 0 ) OS0302 2019年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

At the same materials, mechanical properties of a film different from those of a bulk and we consider that fatigue property of a film is different from that of a bulk. In this study, According to a report by Ueda et al., It was reported that when a thin film experiment was conducted, the occurrence of slips and cracks was small. It has been reported that crystals also differ from in-plane and out-of-plane shear components．Therefore, in this study, we investigated the difference in the location and concentration of slip due to the pearlite volume fraction of carbon steel thin films, and the mode of occurrence of slip using EBSD and metallurgical factors.As for the form of slip, pure iron is near the grain boundary, and in S10C, several slips occur in parallel within the same grain. What was occurring was confirmed.S10C slips are considered to occur only in crystals that satisfy certain conditions, such as having multiple crystals in the film thickness direction and pearlite on both sides. Other non-slip crystals are considered to be plastically deformed due to the high pure shear applied, so slips are occurring but are considered to have been restored.

DOI： 10.1299/jsmemm.2019.OS0302

その他リンク： https://ci.nii.ac.jp/naid/130007846378

高強度鋼のΔKが4MPa√m以下の極低速き裂進展挙動について

堀貴雄, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2018 ( 0 ) OS1408 2018年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

High Strength Steel shows internal origin type fatigue failure as called Fish eye failure in low stress and high cycle region. In this failure, ODA is formed on the fracture surface. Although the explication of the mechanism of ODA formation is needed for the explication of the Fish eye failure mechanism, the explication is not yet accomplished. It’s reported that internal fatigue crack in high strength steel is propagating extremely slowly by recent investigations. And crack propagation rate was suggested that series of the low alloy steel depend on the maximum stress and ΔK. In this study, fatigue test of the same material was in vacuum environment. As a result, ΔK≤4 MPa√m as for crack propagation rate, it suggested that the test on condition of long initial crack was faster than the test on condition of short initial crack. Therefore crack progress speed depend on the test conditions as well as the maximum stress.

DOI： 10.1299/jsmemm.2018.os1408

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2018/0/2018_OS1408/_pdf

磁歪特性を利用した周辺磁場計測による微小き裂情報の測定

小松昭文, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2018 ( 0 ) OS0414 2018年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

Small fatigue crack closure is observed as a thing with a possibility that the influence of change of the stress level and a stress ratio, etc. to the crack growth behavior can be explained, and until now various researches have been done. Although there is a method using the strain gage as the dynamic measurement method required for the elucidation of a minute fatigue crack, in respect of generating of minute fatigue cracks being directly contacted to a measuring object thing, and there is a problem in durability or measurement of the crack growth behavior, it may not necessarily be effective. Then, its attention was paid to the magnetostriction effect which is one of the magnetic actions of a ferromagnetic substance. Measurement of micro fatigue crack information under dynamic load without requiring a simple device and contact with the object was carried out and the change in the magnetic field around the test piece due to the magnetostrictive effect was measured using a coil. We investigated micro fatigue crack information from the information.

DOI： 10.1299/jsmemm.2018.os0414

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2018/0/2018_OS0414/_pdf

面内純せん断負荷下での炭素鋼薄膜のき裂発生におよぼす微視組織の影響

利光秀康, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2017 ( 0 ) OS0533 2017年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

At the same materials, mechanical properties of a film different from those of a bulk and we consider that fatigue property of a film is different from that of a bulk. In this study, we think that formation of fatigue slip band of thin film materials of pure iron , S10C, and S45C, are different from each other and conducted a microscopic observation of the slip band of each thin films. Also we observed strains of each thin films by using Electron Back Scatter Diffraction Pattern (EBSD). As a result, we confirmed that slip bands occurred at the grain boundaries in pure iron, slip bands occurred in a wide range within the grains in S10C and slip bands occurred in a short range within the grains in S45C. Also we consider that strain occurred at the grain boundaries in pure iron, strains occurred in a wide range within the grains in S10C and strains occurred in a short range within the grains in S45C by EBSD. We indicate that in the case of carbon steel, forms of generation of strain within the ferrite crystal grain differs depending on the different in restraint of perlite.

DOI： 10.1299/jsmemm.2017.os0533

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2017/0/2017_OS0533/_pdf

繰返し純せん断負荷下における炭素鋼薄膜の微小き裂の進展挙動

山田純平, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2017 ( 0 ) OS0534 2017年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

Even if metal thin film is the same material, it does not know that different mechanical characteristics form a bulk material are shown, and general fatigue behavior showing a bulk material does not necessarily appear. The present condition is that research of the fatigue behavior in the repetition shear load of a metal thin film is not made compared with the thing of load direction axis and bending. From studies of thin films in the cyclic loading to date, a crack with a locally slip in S10C occurs. The cause such crack occurs, the strain in the ferrite by applying the cyclic shear loading occurs, pearlite is considered to crack been concentrated deformed part that is sandwiched between the pearlite harder than ferrite because no deformation occurs. In addition, with respect to micro fatigue crack propagation in the repeated shear load of the bulk material, it was confirmed that the stiff cracks were inhibited by hard pearlite crystal grains, but the propagating cracks also progressed into the pearlite grains. Therefore, in this study, fatigue cracks are generated and developed by applying a repeated shearing load to the thin film material of S10C, and the influence of the observation / microstructure of its progress process was examined. As a result, it was confirmed that the pearlite crystal grains of the thin film material prevented the crack growth as well as the bulk material, and the propagating cracks also progressed into the pearlite crystal grains.

DOI： 10.1299/jsmemm.2017.os0534

その他リンク： https://www.jstage.jst.go.jp/article/jsmemm/2017/0/2017_OS0534/_pdf

変性 PC を用いた GFRP の疲労特性と損傷機構の考察査読有り

安藤誠人, 佐藤匡将, 黒島義人, 野田尚昭, 竹田英俊

日本機械学会論文集 815 ( 80 ) 1 - 10 2014年07月

ポリジメチルシロキサンを共重合したポリカーボネートの衝撃特性と時間－温度換算則の適用査読有り

安藤誠人, 野田尚昭, 黒島義人, 石川康弘, 竹田英俊

日本機械学会論文集 814 ( 80 ) 1 - 11 2014年06月

GS19 ポリジメチルシロキサンを共重合したポリカーボネートの衝撃特性

安藤誠人, 野田尚昭, 黒島義人, 石川康弘, 竹田英俊

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2014 ( 0 ) _GS19 - 1_-_GS19-2_ 2014年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

In this study, high-speed tensile testing for notched specimen is conducted to investigate the impact property of Polydimethylsiloxane copolymerized Polycarbonate (PDMS-PC) compared with Polycarbonate (PC). Depending on the test temperature and tensile speed, brittle or ductile fractures are observed for PC. However, only ductile fractures are seen for PDMS-PC even at the high speed 7000mmis and low temperature 243K. The impact properties are also considered in terms of the time-temperature superposition principle. Then, master curves for the final fracture elongation for both PC and PDMS-PC are constructed in terms of the strain rate at the notch in conjunction with shift factors.

DOI： 10.1299/jsmemm.2014._GS19-1_

その他リンク： https://ci.nii.ac.jp/naid/110009939419

OS2103 高強度鋼の真空環境下における極低速き裂進展特性 : 材料硬さの影響

吉村直也, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2014 ( 0 ) _OS2103 - 1_-_OS2103-3_ 2014年01月

記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

It is known that high strength steel will cause the characteristic internal fracture called Fish eye fracture in very high cycle region. From this, in order to use high strength steel more efficiently and more safely, the elucidation of the mechanism of the Fish eye fracture produced in low stress and long-life and construction of the lifetime evaluation method of Fish eye fracture are desired. In this study, we did ΔK decrease fatigue test under vacuum environment, and examined the relation between internal fracture in very high cycle region and extremely slow fatigue crack growth behavior under vacuum environment. As a result, the influence of material strength was not seen under vacuum environment. Moreover, opening stress increases with increases of maximum stress.

DOI： 10.1299/jsmemm.2014._OS2103-1_

その他リンク： https://ci.nii.ac.jp/naid/110009939732

OS2109 純せん断下の疲労による炭素鋼薄膜のすべり帯発生におよぼす結晶粒径の影響

植田大輝, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2014 ( 0 ) _OS2109 - 1_-_OS2109-3_ 2014年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

A metal thin film doesn't necessarily appear general fatigue behavior like a bulk material. By a balk and film material, there is difference of restricted state because of differing in the number of grains to the direction of film thickness. In this research the diagram of ratio of slipped grains and number of cycle was sorted by film thickness/grain size ratio in carbon steel thin film under cyclic shear loading. Then slip ratio under film thickness/grain size ratio 0.80 saturated. The influence of grain size was considered to slip band formation by examining grain's existence frequency to direction of film thickness. It was bringing close to actual grains by extending two dimensions grain size to three dimensions. As a result, there was the relation between the slip ratio and the grain's cumulate existence frequency in the value whose film thickness/grain size ratio are near 0.9.

DOI： 10.1299/jsmemm.2014._OS2109-1_

その他リンク： https://ci.nii.ac.jp/naid/110009939738

OS2110 変性PCを用いたGFRPの疲労き裂発生様相

齋田寛志, 黒島義人, 安藤誠人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2014 ( 0 ) _OS2110 - 1_-_OS2110-3_ 2014年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

The following conclusions were obtained as a result of examining the fatigue strength characteristic and the relation of a damage process paying attention to damage to the resin/fiber interface in GFRP based modified PC. 1) Fatigue crack growth rate of the difference in the fatigue characteristics of PDMS-PC and PC-EP is the cause. 2) The damage process of PDMS-PC is a type of crack distribution destroyed while two or more GF end cracks connect.

DOI： 10.1299/jsmemm.2014._OS2110-1_

その他リンク： https://ci.nii.ac.jp/naid/110009939739

OS2120 磁歪特性を利用した微小疲労き裂開口応力の測定

鈴木洋介, 黒島義人

M&M材料力学カンファレンス ( 一般社団法人日本機械学会 ) 2014 ( 0 ) _OS2120 - 1_-_OS2120-3_ 2014年01月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

The general method is not always effective for the measurement of fatigue small crack growth properties by relation of accuracy and a device characteristic. Non-contact and the highly precise measurement are expected by the use of a magnetostriction effect to apply in this study. The small crack growth properties measurement by a magnetic field change with the magnetostriction effect that was one of a characteristic of magnetism of ferromagnetic substance was studied. Using a coil, a magnetic field change with magnetostriction effect was detected, and the waveform change of the output was inspected. The experiment result was revealed that the small crack affects a magnetic field change by a magnetostriction effect.

DOI： 10.1299/jsmemm.2014._OS2120-1_

その他リンク： https://ci.nii.ac.jp/naid/110009939748

Strain rate concentration factor for double-edge-notched specimens subjected to high speed tensile loads 査読有り

Noda N., Sano Y., Ando M., Kuroshima Y., Shinozaki T., Ohtsuka H., Guan W.

13th International Conference on Fracture 2013, ICF 2013 4 2623 - 2632 2013年01月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Engineering plastics provide superior performance to ordinary plastics for wide range of the use. For polymer materials, dynamic stress and strain rate may be major factors to be considered when the strength is evaluated. Recently, high speed tensile test is being recognized as a standard testing method to confirm the strength under dynamic loads. In this study, therefore, high speed tensile test is analyzed by the finite element method; then, the maximum dynamic stress and strain rate are discussed with varying the tensile speed and maximum forced displacement. The strain rate concentration factor found to be constant independent of tensile speed, which is defined t K μ as the maximum strain rate appeared at the notch root over the average nominal strain rate at the minimum section. The maximum strain rate is controlled by the tensile speed alone independent of the magnitude of the forced displacement. It is found that the difference between static and dynamic maximum stress concentration (σmax-σst) at the notch root is proportional to the tensile speed when u/t ≤ 5000mm/s. Copyright © (2013) by International Conference on Fracture.

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84898803106&origin=inward

Relationship between the effect of the modification and the damage behavior of resin/fiber interface in glass fiber reinforced polycarbonate 査読有り

Ando M., Nomura M., Takeda H., Kuroshima Y., Nakatsuka Y.

Zairyo/Journal of the Society of Materials Science, Japan 61 ( 5 ) 441 - 446 2012年05月

記述言語：日本語掲載種別：研究論文（学術雑誌）

This study considered the behavior of tensile and fatigue damage, and the effect of reinforcement of the interface strength given to a damage process by observing the microscopic damage to the fiber interface of glass fiber reinforcement polycarbonate. As a result, the following thing became clear. 1) In both tensile and fatigue process, damage was initiated from the fiber end in the early stages, and the debonding propagated along the fiber interface. 2) The GF/PC interface strength improved by adding the epoxy resin. 3) The debonding along the fiber interface was inhibited by improving interface strength. © 2012 The Society of Materials Science, Japan.

DOI： 10.2472/jsms.61.441

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84866901430&origin=inward

ガラス繊維強化ポリカーボネートにおける樹脂/繊維界面の損傷挙動と改質効果の関係査読有り

安藤誠人,野村学,竹田英俊,黒島義人,中塚康裕

材料 61 ( 5 ) 441 - 446 2012年05月

樹脂/繊維界面を改質した GFPC における疲労強度特性と損傷機構の関係（共著）査読有り

安藤誠人, 中塚康裕, 黒島義人, 野村学, 竹田英俊

日本機械学会論文集 789 ( 78 ) 609 - 612 2012年05月

誘導加熱を用いた超急速短時間焼入鋼の引張特性査読有り

福田忠生,中島大剛,江田潤一,黒島義人,三阪佳孝,川嵜一博

日本機械学会論文集A編 73 ( 726 ) 285 - 291 2007年04月

Tensile properties of QT steel using: Super rapid induction quenching 査読有り

Fukuta T., Nakashima D., Kouda J., Kuroshima Y., Misaka Y., Kawasaki K.

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 73 ( 2 ) 285 - 291 2007年02月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

It has been well known that mechanical properties of steels are improved by gain refinement, smaller cementite particle and finely dispersing cementite particle, It is enabled by super rapid induction tempering the the smaller cementite particle and the finely dispersing cementite particle. In this study, mechanical properties of induction quenching and tempering carbon steel using super rapid induction heating system were investigated. Dtail, the effect of quenching time on tensile properties is examined. The quenching time was changed in four steps of 0.44 s (1163 K), 10 s (1233 K) +10 s (1153 K), 20 s (1273 K) and 20 s (1433 K). As a result, it was found that the tensile strength of QT steel indicated an increase tendency with hardness. The yield strength was in proportion to a square root of grain size. However, the ductility improvement effected by super rapid induction quenching was not found, reduction of area did not depend on grain size.

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34248362418&origin=inward

Tensile properties of QT steel using super rapid induction tempering 査読有り

Fukuta T., Nakashima D., Kouda J., Kuroshima Y., Misaka Y., Kawasaki K.

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 72 ( 7 ) 1088 - 1094 2006年07月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

We focused our attention on microstructure control and improvement of mechanical properties of induction tempering carbon steel using super rapid induction heating system. We examined the effect of tempering time on tensile properties. The tempering time was changed in two steps of 0.35s and 1.15s. As a result, it was found that the QT steel obtained super rapid induction tempering had both high strength and high ductility. The ductility of the super rapid induction tempering steel was 10% larger compared with the usual tempering steel. The reason for this phenomenon was explained in that cementite particle of super rapid induction tempering steel became small and dispersed finely in comparison with usual tempering steel.

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33749563560&origin=inward

誘導加熱を用いた超急速短時間焼戻鋼の引張特性査読有り

福田忠生,中島大剛,江田潤一,黒島義人,三阪佳孝,川嵜一博

日本機械学会論文集A編 72 ( 719 ) 1088 - 1094 2006年04月

A study on ODA formation condition for high strength steel during fatigue test in vacuum 査読有り

Kawano H., Kuroshima Y., Harada S.

Zairyo/Journal of the Society of Materials Science, Japan ( 社団法人日本材料学会 ) 54 ( 12 ) 1213 - 1216 2005年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

A high strength steel shows fish-eye failure in very long life fatigue. In this region, the fatigue crack growth in ODA (Optically Dark Area) controls the fatigue process. However, ODA's formative mechanism is unknown. Therefore, to predict fatigue life of fish-eye failure, it is important to know ODA's formative mechanism. So, the present study examined for the influential factors on ODA in the fatigue process through uniaxial push-pull fatigue tests in vacuum as well as computer simulation. In experiment, vacuum environment is employed to simulate fish-eye type crack growth on surface of specimens becase of shutting off supply of air. The test results in vaccum showed that the fatigue life property of surface failure has corresponded to fish-eye fatigue life. And the site of inclusion which has fracture origin size determines whether surface failure or internal failure in vacuum. The results of fractographic observation of crack initiation showed that the rough area of surface fracture in vacuum was formed by mechanism of ODA type crack. Furthermore, the fatigue life of numerical simulation in vacuum showed that the fatigue life which was necessary to form ODA on specimen surface corresponded experimental life.

DOI： 10.2472/jsms.54.1213

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33244492443&origin=inward

真空疲労試験による高強度鋼のODA形成条件の検討査読有り

河野寛輝,黒島義人,原田昭治

材料 54 ( 12 ) 1213 - 1213 2005年04月

Evaluation of Fatigue Life of High Strength Steel by Numerical Simulation Using the Competitive Crack Propagation Properties Model 査読有り

Yoshihito Kuroshima,Hiroki Kawano,Shoji Harada

VHCF-3 32 - 32 2004年04月

3D Observation of Transient Stage I-to-Stage II Behavior of Surface Crack Growth in Carbon Steel and Aluminum 査読有り

Shoji Harada,Yoshihito Kuroshima

7th ICBMFF 173 - 173 2004年04月

Relieving of welding residual stress by applying cyclic load 査読有り

Harada S., Kobayashi Y., Kuroshima Y., Iwamoto K., Amimoto T.

Key Engineering Materials 243-244 183 - 188 2003年06月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

A fundamental study of relieving or attenuating weld residual stress was done by applying cyclic load. Two kinds of tests were done. First, bead-on welding was done onto front surface of plate specimen. Then, the distribution of initial welding residual stress was measured in terms of X ray diffraction method. To relieve this initial residual stress, cyclic load was applied to the specimen in a vibrating machine. The change of stress cycle-dependent residual stress was measured. Secondary, this method was applied to a box-shaped rahmen structure. Both results showed that the initial welding residual stress can be relieved when the summation of stress component of the residual stress plus externally applied cyclic stress exceeds the yield stress of the material.

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0038239471&origin=inward

LMCによるCuクラスタリング過程の定量的評価査読有り

福田忠生,赤星保浩,黒島義人,原田昭治

日本機械学会論文集(A編) 69 ( 679 ) 538 - 538 2003年04月

Characterization of Growth Behavior of Small Mode III Crack Using Compliance Method in Torsional Fatigue 査読有り

Yoshihito Kuroshima,Shoji Harada,Ryohei Miyoshi

ATEM'03 2003年04月

LMCによるCuクラスタリング過程の定量的評価査読有り

福田忠生, 赤星保浩, 黒島義人, 原田昭治

日本機械学会論文集. A編 = Transactions of the Japan Society of Mechanical Engineers. A ( 社団法人日本機械学会 ) 69 ( 679 ) 538 - 544 2003年03月

担当区分：責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）

In this study, we simulate nanoscale copper precipitation process based on the vacancy jump model using Lattice Monte Carlo (LMC) method, where an activation energy is calculated from the first neighboring interaction model. We confirmed that status of copper clustering at temperature of 300 K is different from those of 600 K and 900 K at the same potential energy decrease, and copper clusters are formed more rapidly at higher temperature. We obtained a fact that process of copper clustering consists of the two phases which are formation phase, and coalescence and/or absorption phase.

DOI： 10.1299/kikaia.69.538

その他リンク： https://ci.nii.ac.jp/naid/110002370340

Quantitative evaluation of copper clustering process by Lattice Monte Carlo simulation 査読有り

Fukuta T., Akahoshi Y., Kuroshima Y., Harada S.

Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 69 ( 3 ) 538 - 544 2003年03月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0038617770&origin=inward

OS12W0360 Characterization of growth behavior of small mode III crack using compliance method in torsional fatigue 査読有り

Kuroshima Yoshihito, Harada Shoji, Miyoshi Rhohei

Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics ( 一般社団法人日本機械学会 ) 2003 ( 0 ) _OS12W0360 - _OS12W0360 2003年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

In order to characterize small mode III crack growth torsional fatigue tests were done using circumferentially notched prefatigue-cracked specimens. The change of the shape of hysteresis loop during crack growth was monitored in terms of two wire strain gauges mounted on the surface perpendicularly across the notch. Then, the change of compliance during fatigue crack growth was evaluated in terms of the hysteresis loop. Regarding to characteristic growth behavior of the small mode III fatigue crack, the small crack first grew in the coaxial plane. Then it gradually changed growth plane out of that coaxial plane. Finally the crack was propagated in the direction 45° inclined to the cross sectional plane. That means, the change of three dimensional crack plane was found to correspond to so-called factory roof pattern, common at the first stage of fatigue crack growth from the notch root in torsional fatigue condition. The fatigue crack growth rate varied in accordance with that mode change of small crack growth. In addition, the crack growth rate was considerably affected by the friction force acting on the crack surface. Increasing crack length in mode III crack growth condition decelerated the crack growth, which reflected increase in friction force. The change of compliance during crack growth was found suitable for estimating the effect of the friction force on crack growth rate. In lower ΔKeff region, the friction force was successfully characterized using a parameter of compliance. In case of large scale yielding condition, ΔJeff parameter including the effect of friction force-generated increase of torque was found to be a suitable parameter to estimate crack growth rate. The friction force acting on the unit area of crack plane was constant, irrespective of crack length and loading condition.

DOI： 10.1299/jsmeatem.2003.2._OS12W0360

その他リンク： https://ci.nii.ac.jp/naid/110009968302

Reliving of Welding Residual Stress by Applying Cyclic Load 査読有り

S. HARADA,Y. KOBAYASHI,Y. KUROSHIMA,K. IWAMOTO,T. AMIMOTO

Proceedings of the International Conference on Experimental and Computational Mechanics in Engineering 2002年08月

Cuクラスタリング過程のLMCシミュレーション

福田忠生, 赤星保浩, 黒島義人, 原田昭治

九州工業大学研究報告工学 ( 九州工業大学工学部 ) ( 74 ) 1 - 8 2002年03月

Mode III fatigue crack growth behavior - Transition condition of the crack growth mode - 査読有り

Kobayashi Y., Harada S., Kuroshima Y., Fukuda Y., Miyoshi R.

Zairyo/Journal of the Society of Materials Science, Japan ( 社団法人日本材料学会 ) 50 ( 10 ) 1098 - 1101 2001年10月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Mode III fatigue crack is usually observed at the root of circumferentially notched round bar. As the crack grows in the depth direction of specimen, the growth rate of crack decreases. In this respect, crack mode transition from mode III to mode I is understood responsible. However, quantitative evaluation on crack mode transition has been hardly done. Therefore, values of stress intensity factor K1 under mode III fatigue crack growth tests on a low carbon steel were calculated with using principal stress, as crack mode transition began. Then KI values were compared with crack growth rate curve of mode I. As the result, it was observed that the condition of crack mode transition was given by the crack growth curve of mode I.

DOI： 10.2472/jsms.50.1098

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0035484383&origin=inward

A Mechanics Condition Governing Incipient Fatigue Crack Growth under Cyclic Torsion 査読有り

S. Harada,Y.Kobayashi,Y. Kuroshima

6th International Conference on Biaxial/Multiaxial Fatigue & Fracture 639 - 646 2001年06月

ModeⅢ疲労き裂の進展挙動 -モード遷移条件- 査読有り

未入力

材料 50 ( 10 ) 1098 - 1098 2001年04月

Mechanism of High Strengh Steel in Giga Cycle Fatingne Region 査読有り

未入力

Fatigue in the Very High Cycle Regime 229 - 229 2001年04月

Fatigue Life Evaluation of High Strength Steel Based on the Interior Small Crack Observation 査読有り

未入力

Material Science Research International, STP-1 53 - 53 2001年04月

The effect of atmosphere on fatigue properties of high strength steel 査読有り

Shoya S., Kuroshima Y., Harada S.

Zairyo/Journal of the Society of Materials Science, Japan ( 社団法人日本材料学会 ) 48 ( 10 ) 1107 - 1111 1999年10月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

In order to examine the mechanism of so-called fish eye-pattern fatigue failure, usually being caused by initiation and growth of internal small crack, uniaxial push-pull fatigue tests were carried out on a high strength low alloy steel in vacuum, for modifying the environment during internal crack initiation and growth on specimen surface. The test results showed that the fatigue life was elongated and the crack growth rate was delayed in vacuum. Furthermore, the results of fractographic observation of crack initiation at inclusions revealed that the surface type crack initiation in vacuum resembles the internal fish eye-type crack initiation in atmosphere. Finally the fish eye-type fatigue life was well evaluated in terms of small crack growth law in vacuum.

DOI： 10.2472/jsms.48.1107

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033207753&origin=inward

耐摩耗性表面処理球状黒鉛鋳鉄の開発とエロージョン摩耗特性査読有り

未入力

日本機械学会論文集(A編) 65 ( 635 ) 1528 - 1528 1999年04月

高強度鋼の疲労寿命特性に及ぼす大気の影響査読有り

黒島　義人

材料 48 ( 10 ) 1107 - 1107 1999年04月

温度変化に注目したCFRTPの疲労寿命評価査読有り

未入力

日本機械学会論文集(A編) 65 ( 633 ) 1105 - 1105 1999年04月

Simulation Study of the Effect of Spheroidal Graphite Morphologies on Low Cycle Fatigue Life of Ductile Cast Iron 査読有り

未入力

ATEM'99 679 - 679 1999年04月

微小き裂発生，伝ぱに基づく高サイクルランダム疲労下の疲労被害評価査読有り

未入力

日本機械学会論文集(A編) 64 ( 624 ) 2152 - 2152 1998年04月

変動荷重下の低サイクル疲労き裂進展評価パラメータについて査読有り

未入力

日本機械学会論文集(A編) 64 ( 622 ) 1449 - 1449 1998年04月

高強度鋼の高サイクル疲労域における内部き裂進展挙動査読有り

未入力

日本機械学会論文集(A編) 64 ( 626 ) 2536 - 2536 1998年04月

き裂開閉口変位に基づいた微小き裂伝ぱ則の構築査読有り

未入力

材料 46 ( 10 ) 1173 - 1173 1997年04月

On the Transition of Incipient Growth of Fatigue Crack from Stage I to Stage II under Combined Bending/Torsion 査読有り

未入力

Proceedings of the 5th International Conference on Biaxial/Multiaxial Fatigue & Fracture II 46 - 46 1997年04月

Surface hardening of ductile cast iron using stainless steel 査読有り

Qian M., Harada S., Kuroshima Y., Nagayoshi H.

Materials Science and Engineering A 208 ( 1 ) 88 - 92 1996年04月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

A surface hardening technique for improving the wear resistance of ductile cast iron (DI) is proposed by fabricating molten DI with stainless steel. The essential idea is concerned with using the chromium source in stainless steel and the carbon source in DI to form chromium carbides. It was demonstrated that the surface of the fabricated DI consisted of firstly a layer of high chromium white cast iron ((Cr,Fe)7C3 eutectic carbides), which was originally stainless steel, and then a layer of medium-low-chromium white cast iron ((Fe,Cr)3C eutectic carbides), which was originally DI. Thus the hardness of the surface layer became 2-3 times that of the baseline ductile cast iron. Applying austenitic stainless steel produces a much better hardening effect than applying ferritic stainless steel. The depth of the hardened surface layer depends on the pouring temperature of the iron melt, the wall thickness of the iron casting and the cooling rate of the casting mold. The present strategy is, in principle, possibly applied to complete as well as local surface hardening of various kinds of ductile iron castings.

DOI： 10.1016/0921-5093(95)10058-X

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0030123699&origin=inward

Surface harclening of ductile cast iron using stainless steel 査読有り

未入力

Materials Science and Engineering A208 88 - 88 1996年04月

Effect of Sphroidal Graphite on Low cycle Fatigue Properties of Ferritic Ductile Cast Iron 査読有り

未入力

FATIGUE '96 239 - 239 1996年04月

Fatigue Properties of a Very Thin Steel Wire under Fluctuating Tension 査読有り

未入力

FATIGUE '96 1177 - 1177 1996年04月

Growth rate and closure of fatigue cracks under high-cycle fatigue random loading 査読有り

未入力

LOCALIZED DAMAGE IV 291 - 291 1996年04月

Effect of nodule counts on the low-cycle fatigue properties of ferritic ductile cast iron 査読有り

Harada S., Kuroshima Y., Fukushima Y., Ueda T.

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP 306 247 - 252 1995年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Two kinds of ferritic ductile cast iron, having same chemical composition and different nodule count, i.e., high nodule count material (HNC) and low nodule count material (LNC), were low-cycle fatigued under stress-controlled cycling. The difference of nodule count induced difference in cyclic hardening behavior, LCF strength and fatigue mechanism. When LCF life was evaluated in terms of cyclic plastic strain range which includes the effect of cyclic hardening properties, both materials showed same fatigue strength. Although spheroidal graphite (SG) played an important role as a crack initiation site at an early stage of fatigue process, subsequent fatigue process was differed between HNC and LNC. In case of HNC, the fatigue process was dominated by the growth of a single crack. On the contrary, independent growth of subcracks without forming a leading crack controlled the whole fatigue process in material LNC. In addition, contradictory to number of nodule counts, the density of the initiated subcracks was higher in LNC than in HNC. Statistical analysis of three dimensional (3D) distribution of SG revealed that the difference in fatigue mechanism mentioned so far was mainly caused by the difference of distribution of SG size. Finally image processing analysis of 3D fracture surface showed that the roughness in crack growth area was larger in LNC than in HNC.