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予加工を与えた炭素鋼横穴材の疲れ挙動* -予引張材のねじり疲れの場合-
https://kitami-it.repo.nii.ac.jp/records/6559
4030cc54-74fb-493f-afb6-7306dc544d5a
名前 / ファイル | ライセンス | アクション | |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2007-04-09 | |||||
タイトル | ||||||
タイトル | 予加工を与えた炭素鋼横穴材の疲れ挙動* -予引張材のねじり疲れの場合- | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
その他のタイトル | ||||||
その他のタイトル | The Behavior of Metal Fatigue in Pre-strained Carbon-Steel Specimens with a Transverse Circular Hole ?as the Pre-strain Tensile and the Fatigue Test Torsional- | |||||
著者 |
追分, 重義
× 追分, 重義× 宇野, 和雄× 三浦, 節男 |
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著者別名 | ||||||
識別子 | ||||||
識別子 | 33076 | |||||
識別子Scheme | WEKO | |||||
姓名 | ||||||
姓名 | Shigeyoshi, OIWAKE | |||||
著者別名 | ||||||
識別子 | ||||||
識別子 | 33077 | |||||
識別子Scheme | WEKO | |||||
姓名 | ||||||
姓名 | Kazuo, UNO | |||||
著者別名 | ||||||
識別子 | ||||||
識別子 | 33078 | |||||
識別子Scheme | WEKO | |||||
姓名 | ||||||
姓名 | Setsuo, MIURA | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Carbon-steel specimens which had been pre-strained in tension and had a lateral hole made in them, were tested in cyclic torsion to examine the fatigue strength, fatigue crack propagation and opening as well, etc. Characteristic results obtained were as follows. 1) As the hole diameter δstayed constant and the pre-strain ε varied, τ-N, l-N/N_F, i-N/N_F and τ_w-χ relations showed that the order of the parameterε as 0, 2, 14% realized the order of the level of the fatigue strengthτ_T or τ_w, crack length l, non-opening ratio i, and τ_w-χ (endurance limit-stress gradient) curves. 2)The time strength τ_T increased before N≒10^<6.5> cycles as the lateral hole diminished as a δ=3.6, 2.4, 1.2, 0 mm, though it was exclusively high byδ=0 mm. For the later cycles, τ_T increased-not always as the hole size decreased, and their relations were expressed in the τ_w-χ curves. The more the prestrain ε, the higher the level of the curve. The bottom of the endurance limit τ_w lay for the diameter ratio δ/d≒0.2?0.3. 3) The crack propagation was of Frost and Dugdale type as was also the case of the rotary bending and push-pull fatigue as well. 4) For the phenomena about the hardness, as the cycle ratio N/N_F increased, H_V increased by ε=0,2% from the early cycle or after a slight decrease, and decreased by ε=14% from the early cycle or after a slight increase. 5) The non-opening ratio i for N/N_F=0.6?0.7 levelled higher in the order of ε=0, 2, 14% | |||||
書誌情報 |
北見工業大学研究報告 巻 15, 号 2, p. 139-147, 発行日 1984-03 |
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フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | 北見工業大学 |