Practical formula of the shape evolution of a surface crack under fatigue loading

Yosuke Anai, Toshio Niwa, Koji Gotoh

研究成果: 著書/レポートタイプへの貢献会議での発言

2 引用 (Scopus)

抄録

Fatigue life estimation for planar cracks, e.g. part-through surface cracks or embedded cracks is very important because most of fatigue cracks found in welded built-up structures show planar crack morphologies. Although authors had proposed the estimation procedure of crack shape evolution for a planar crack based on the fracture mechanics approach, this method cannot apply if the values of stress intensity factor at the vertices of the surface crack approximated as an ellipse cannot calculated. Then, development of the shape evolution procedure of a planer crack under the stress field with arbitrary gradient, because fatigue cracks in welded built-up structures exist near the stress concentrated region. A Practical estimation formula the shape evolution of a surface crack under stress field with the gradient is proposed in this study. This formula is established by considering the stress field under no crack condition and some former proposed formulae under uniform and pure bending stress fields. The validity of the proposed formula are confirmed by comparing some measured surface crack shape evolutions under some stress gradient conditions.

元の言語英語
ホスト出版物のタイトルMaterials Technology
出版者American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791856505
DOI
出版物ステータス出版済み - 1 1 2015
イベントASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2015 - St. John's, カナダ
継続期間: 5 31 20156 5 2015

出版物シリーズ

名前Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
4

その他

その他ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2015
カナダ
St. John's
期間5/31/156/5/15

Fingerprint

Fatigue of materials
Cracks
Fracture mechanics
Stress intensity factors

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

これを引用

Anai, Y., Niwa, T., & Gotoh, K. (2015). Practical formula of the shape evolution of a surface crack under fatigue loading. : Materials Technology (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; 巻数 4). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2015-41978

Practical formula of the shape evolution of a surface crack under fatigue loading. / Anai, Yosuke; Niwa, Toshio; Gotoh, Koji.

Materials Technology. American Society of Mechanical Engineers (ASME), 2015. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; 巻 4).

研究成果: 著書/レポートタイプへの貢献会議での発言

Anai, Y, Niwa, T & Gotoh, K 2015, Practical formula of the shape evolution of a surface crack under fatigue loading. : Materials Technology. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, 巻. 4, American Society of Mechanical Engineers (ASME), ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2015, St. John's, カナダ, 5/31/15. https://doi.org/10.1115/OMAE2015-41978
Anai Y, Niwa T, Gotoh K. Practical formula of the shape evolution of a surface crack under fatigue loading. : Materials Technology. American Society of Mechanical Engineers (ASME). 2015. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE). https://doi.org/10.1115/OMAE2015-41978
Anai, Yosuke ; Niwa, Toshio ; Gotoh, Koji. / Practical formula of the shape evolution of a surface crack under fatigue loading. Materials Technology. American Society of Mechanical Engineers (ASME), 2015. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).
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