文献一覧: 一般社団法人日本機械学会 (出版者)

The sounding mechanism in air-reed instruments is investigated based on the computational fluid dynamics. While previous studies have assumed a sound source based on acoustic theory, the authors attempt in the present study to elucidate exactly the source of sound as an essential factor defining the timbre of musical instruments. To deal with the large computational grids required to capture minute changes in pressure, the Hitachi SR 8000 massively parallel supercomputer is employed for computation. The computational results are consistent with Brown's experimental equation, and new frequency component revealed only in this three-dimensional analysis is identified, attributed to the harmonics of the air jet.

2020-04-23 01:19:19
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https://ci.nii.ac.jp/naid/110002387831

1 0 0 0 子供時代の経験(<メカライフ特集>創立110周年記念,子供と機械)

著者: 植田紘揮
出版者: 一般社団法人日本機械学会
雑誌: 日本機械学會誌 (ISSN:00214728)
巻号頁・発行日: vol.110, no.1069, pp.924-925, 2007-12-05

2020-04-13 10:31:32
1 + 2 Wikipedia

https://ci.nii.ac.jp/naid/110006546472

1 0 0 0 J061023 機能性酸化物の酸素不定比性ならびに導電特性変調に対するひずみ効果評価(〔J061-02〕燃料電池・二次電池におけるナノ・マイクロ現象とマクロ性能(2):SOFC内ひずみと水蒸気改質)

著者: 佐藤一永橋田俊之
出版者: 一般社団法人日本機械学会
雑誌: 年次大会 : Mechanical Engineering Congress, Japan
巻号頁・発行日: vol.2013, pp."J061023-1"-"J061023-2", 2013-09-08

The influence of uniaxial compressive stress on the oxygen ion and mixed conductivity of Zr_<0.82>Y_<0.18>O_<1.91>, Ce_<0.9>Gd_<0.1>O_<1.95-δ>,Yba_2Cu_3O_<7-δ>,and La_2NiO_<4+δ> were investigated by using AC 4 probe method under controlled oxygen partial pressure condition. The applied compressive stress was ranged from 0 Mpa to 350 MPa for these specimens in air at 600℃. In order to clarify the reason for the phenomenon of conductivity change, the mixed conductivity of Ce_<0.9>Gd_<0.1>O_<1.95-δ> for the application of stresses were measured under reducing conditions. The experimental result revealed that as the application compressive stress increases, the carrier concentration remain steady, whereas the mobility decreases. The conductivity was decreased with increasing compressive strain, this trend agreed with that of the simulation results. Therefore, the decrease of mobility was considered to be the reason for the decline conductivity under compressive strain/stress conditions.

2019-07-23 00:45:07
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https://ci.nii.ac.jp/naid/110009935342

1 0 0 0 1A1-I04 カーボンナノチューブエミッターによって電子ビーム誘発された堆積によるナノ製造

著者: 董立新新井史人福田敏男
出版者: 一般社団法人日本機械学会
雑誌: ロボティクス・メカトロニクス講演会講演概要集
巻号頁・発行日: vol.2002, 2002

電子ビーム誘発された堆積(EBID)はカーボンナノチューブ(CNT)エミッターを通して実現された。ナノマニピュレーションによってナノチューブエミッターと基板の間のギャップが377nmに調整され, 120Vのバイアスをかけて, 2μAの放出電流が得られることを示した。同じ真空室の電界放出走査電子顕微鏡(FESEM)の熱電子銃による従来のEBIDと比較すると, ナノチューブエミッターのバイアスと放出電流は, それぞれFESEMの熱電子銃のわずか0.8%および1.9%であるが, 堆積率はそれの12.2%に達したことが分かった。そして, 最後にパラレルEBIDは提案された。

2019-07-14 08:30:10
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https://ci.nii.ac.jp/naid/110002504859

1 0 0 0 1A1-A03 ミニユンボ (Joy Trainer) を用いた技能の数値化に関する研究

著者: 三澤智則小関光弘小林宏
出版者: 一般社団法人日本機械学会
雑誌: ロボティクス・メカトロニクス講演会講演概要集
巻号頁・発行日: vol.2002, 2002

重機(パワーショベルなど)を操縦する際の運転者の技能の評価を数値的に評価する際の実験方法, 評価方法についての基礎的研究の発表。

2019-07-08 00:15:44
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https://ci.nii.ac.jp/naid/110002504671

1 0 0 0 Numerical Study of Unsteady Flowfield Around High Speed Trains Passing by Each Other^*

著者: Hwang Jaeho Yoon Tae-Seok Lee Dong-ho LEE Soo-Gab
出版者: 一般社団法人日本機械学会
雑誌: JSME international journal. Ser. B, Fluids and thermal engineering (ISSN:13408054)
巻号頁・発行日: vol.44, no.3, pp.451-464, 2001-08-15
参考文献数: 18
被引用文献数: 21

In order to study unsteady flowfield around high speed trains passing by each other, a three-dimensional inviscid numerical method based on three types of domain decomposition techniques is developed. Roe’s FDS scheme is used for the space discretization, and LU-SGS method is adopted for the time integration. After validation of the code to a single track train/tunnel interaction problems with three dimensional tunnel configuration, the numerical simulations of the trains passing by on the double-track are performed for the 5 different cases using 3 basic parameters; e.g. nose shape, existence of tunnel, and train length. After the parametric study, variational parametric studies are carried out to understand the effects of the velocity of the train, the gap between the train and the blockage ratio. Firstly, train/tunnel interaction problems for double track railway system are investigated and aerodynamics loads histories during the crossing events—train/train interaction problem—are presented and discussed.

2019-07-06 03:15:15
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1 0 0 0 リサイクル・ガラス繊維強化PEEKの優れた疲労き裂進展特性とその要因解析

著者: 鈴木秀人松村亜紀子福永久雄原口忠男
出版者: 一般社団法人日本機械学会
雑誌: 日本機械学会論文集. A編 (ISSN:03875008)
巻号頁・発行日: vol.62, no.603, pp.2501-2505, 1996-11-25
参考文献数: 15
被引用文献数: 9

Influences of the recycling process on the fatigue crack propagation (FCP) property of glass fiber-reinforced PEEK were examined. In the present research the influence of the recycling process on the property of matrix resin was focused on. The main results were as follows: (1)It was noted that the FCP property of recycled PEEK/GF materials were as superior to that of virgin material. (2)The length of glass fibers in PEEK resin as not markedly reduced during the recycling process, due to the good fluidity of PEEK resin. (3)FCP curves on a da/dN-ΔK diagram for virgin and recycled PEEK/GF materials were expressed as one curved line on a da/dN-ΔK/E diagram. It was found that the elasticity modulus had been improved by repeated melting and crystallization during the recycling process.

2019-06-24 02:00:29
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1 0 0 0 1214 タンデムロータ型インテリジェント風力発電ユニットの実証試験(OS12-3 再生可能流体エネルギー,オーガナイズドセッション)

著者: 羽野洋平久保幸一金元敏明
出版者: 一般社団法人日本機械学会
雑誌: 流体工学部門講演会講演論文集 (ISSN:13482882)
巻号頁・発行日: vol.2009, pp.405-406, 2009-11-06

The authors invented the unique wind power unit composed of the large-sized front wind rotor, the small-sized rear wind rotor and the peculiar generator with the inner and the outer armatures. The rotational torques of both armatures/wind rotors are counter-balanced, while the rotational speeds and the directions are adjusted automatically in response to the wind conditions. The prototype unit is composed of the tandem wind rotors, whose front and rear diameters are 2 m and 1.33 m, and the double rotational armatures type synchronous generator. The unit was setup at the roof of an isolated building at Kitakyushu city in Japan. The field test results proved that this type unit may be effective to get the sufficient output if the profiles of the wind rotors and the peculiar generator are optimized.

2019-05-19 16:45:28
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https://ci.nii.ac.jp/naid/110007861362

1 0 0 0 1724 タンデムロータ型インテリジェント風力発電機 : 風車ロータの好適化(S34-2 自然流体エネルギーの利用技術(2),S34 自然流体エネルギーの利用技術)

著者: 久保幸一金元敏明御手洗拡史
出版者: 一般社団法人日本機械学会
雑誌: 年次大会講演論文集
巻号頁・発行日: vol.2007, pp.355-356, 2007

The authors have invented the superior wind turbine generator, which is composed of the tandem wind rotors and the double rotational armature type generator without the conventional stator. The large-sized front wind rotor and the small-sized rear wind rotor drive respectively the inner and the outer armatures of the generator, in keeping the rotational torque counter-balanced. Such operating conditions enable to make the output higher than the conventional turbine and to keep the output constant in the rated operating mode without the brake and/or the pitch control mechanisms. This paper discusses mainly the effect of the wind rotor profile (camber and twist) on the diameter ratio and the axial distance between both wind rotors.

2019-05-19 16:30:22
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1 0 0 0 タンデムロータ型インテリジェント風力発電機の開発 : ブレード形状の改善(S21-5 自然の流体エネルギー利用技術(5),S21 自然の流体エネルギー利用技術)

著者: 金元敏明富田雅樹津田洋介福岡佑樹
出版者: 一般社団法人日本機械学会
雑誌: 年次大会講演論文集
巻号頁・発行日: vol.2004, pp.153-154, 2004

This paper proposes the unique wind turbine system, which is composed of the tandem wind rotors and the peculiar generator with the inner and the outer rotors, and discusses the wonderful advantages of the system. The large-sized front wind rotor and the small-sized rear wind rotor drive respectively the inner and the outer rotors of the generator, in keeping the rotational torque counter-balancing. Such operating conditions enable to make the cut-in wind speed slower and to keep the frequency/output constant irrespective of the wind speed, without the conventional breaking and/or the pitch control mechanism.

2019-05-19 16:15:20
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1 0 0 0 【138】白熱電燈の心の色に依つた温度を測定する装置(3.測定機及び測定法)

著者: 宮本武之助
出版者: 一般社団法人日本機械学会
雑誌: 機械學會誌
巻号頁・発行日: vol.33, no.162, pp.364-365, 1930-10-18

2019-05-13 22:45:18
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https://ci.nii.ac.jp/naid/110002445928

1 0 0 0 [母国紹介]ギリシャ(留学生通信)

著者: アレキサンドロスブチナス
出版者: 一般社団法人日本機械学会
雑誌: 日本機械学會誌 (ISSN:00214728)
巻号頁・発行日: vol.110, no.1060, pp.202-203, 2007-03-05

2019-04-26 09:45:24
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https://ci.nii.ac.jp/naid/110006240312

1 0 0 0 福島第一原発の廃炉作業用ロボットの開発(<連載講座>機械工学は21世紀を拓けるか?(第14回))

1 0 0 0 ホロノミック全方向車両 (特集 ものを動かす)

1 0 0 0 高出力トランクピストン形機関9UET52/65形について

1 0 0 0 北海道鐵道に於ける除雪方法

1 0 0 0 【35】ハンブルグ高架鐵道の新自動連結器(11.鐵道および鐵道車輛)

1 0 0 0 ロボットの開発に必要な技術(境界領域からみた基礎領域の重要性)(機械系学生のための便利帳)

1 0 0 0 遠心ポンプの径方向推力に関する実験的研究

1 0 0 0 東海道新幹線計画の概要)(鉄道(新幹線)小特集)

1 0 0 0 エアリード楽器の発音メカニズムの数値流体力学(流体工学,流体機械)