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熱疲労き裂の進展挙動に関する破壊力学的検討
http://hdl.handle.net/10649/307
http://hdl.handle.net/10649/30745852757-65f4-482c-b6e6-9f37b0b90cd2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
K3_2.pdf (573.5 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-02-15 | |||||
| タイトル | ||||||
| タイトル | 熱疲労き裂の進展挙動に関する破壊力学的検討 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
岡崎, 正和
× 岡崎, 正和× 小泉, 尭 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 852 | |||||
| 姓名 | オカザキ, マサカズ | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 853 | |||||
| 姓名 | コイズミ, タカシ | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 854 | |||||
| 姓名 | Okazaki, Masakazu | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 855 | |||||
| 姓名 | Koizumi, Takashi | |||||
| 著者所属 | ||||||
| 値 | 長岡技術科学大学工学部機械系 | |||||
| 著者所属 | ||||||
| 値 | 東京工業大学工学部機械工学科 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Rate of thermal-mechanical fatigue crack propagation was investigated under the condition of in phase thermal strain cycle. Experimental rates of crack propagation were correlated with the cyclic J-integral, dJ, which was estimated from the analytical equation derived by Shih and Hutchinson. The effect of tensile strain rates on the thermal-mechanical fatigue crack propagation was discussed in the light of electron fractography. Further, the thermal-mechanical fatigue life was predicted by integrating the equation of crack propagation and it was compared with the experimental fatigue life obtained by the smooth specimen.The conclusions obtained are as follows ;(1) Rate of thermal-mechanical fatigue crack propagation can be expressed by the following equation,(equation) where C and m are material constants.(2) The part-through crack propagates keeping its aspect ratio constant at 0.36. Its aspect ratio is approximately consistent with the one in which the part-through crack has a uniformly distributed elastic stress intensity factor along its entire front.(3) The ruptured surface is changing from the intergranular fracture to the transgranular fracture as crack growth. Striations are formed on the transgranular fracture surface and their spacings are consistent with the rate of crack propagation.(4) Voids are formed at the grain boundaries in the specimen with increasing tensile strain time.(5) Thermal-mechanical fatigue lives can be predicted approximately by integrating the equation of crack propagation. | |||||
| 書誌情報 |
長岡技術科学大学研究報告 巻 3, p. 9-17, 発行日 1982-02-27 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0388-5631 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00177120 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| その他のタイトル | ||||||
| その他のタイトル | Fracture mechanics study on thermal-mechanical fatigue crack propagation | |||||
| 出版者 | ||||||
| 出版者 | 長岡技術科学大学 | |||||
