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Examination on Fatigue Limit and Crack Growth Characteristic of SBHS700 Base Metal

Ono, Yuki / Kinoshita, Koji

Abstract The object of this study is to clarify fatigue limit and fatigue crack growth characteristic of SBHS700 base metal which is 780 MPa class steel. This study carried out the fatigue tests of SBHS700 base metal containing different defect size, and the fatigue limit was compared with that of the conventional steel. Test results indicate that the fatigue limit increased with decrease initial defect size, and can be precisely evaluated by using $\sqrt{area}$ parameter model. This paper also presents that crack growth characteristic was almost the same as that of the conventional steel from the observation of striations by using Scanning electron microscope and length of beach marks.

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Examination on Fatigue Limit and Crack Growth Characteristic of SBHS700 Base Metal

Ono, Yuki / Kinoshita, Koji

Abstract The object of this study is to clarify fatigue limit and fatigue crack growth characteristic of SBHS700 base metal which is 780 MPa class steel. This study carried out the fatigue tests of SBHS700 base metal containing different defect size, and the fatigue limit was compared with that of the conventional steel. Test results indicate that the fatigue limit increased with decrease initial defect size, and can be precisely evaluated by using $\sqrt{area}$ parameter model. This paper also presents that crack growth characteristic was almost the same as that of the conventional steel from the observation of striations by using Scanning electron microscope and length of beach marks.

Examination on Fatigue Limit and Crack Growth Characteristic of SBHS700 Base Metal

Ono, Yuki / Kinoshita, Koji

Abstract The object of this study is to clarify fatigue limit and fatigue crack growth characteristic of SBHS700 base metal which is 780 MPa class steel. This study carried out the fatigue tests of SBHS700 base metal containing different defect size, and the fatigue limit was compared with that of the conventional steel. Test results indicate that the fatigue limit increased with decrease initial defect size, and can be precisely evaluated by using $\sqrt{area}$ parameter model. This paper also presents that crack growth characteristic was almost the same as that of the conventional steel from the observation of striations by using Scanning electron microscope and length of beach marks.

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Title:

Examination on Fatigue Limit and Crack Growth Characteristic of SBHS700 Base Metal

Contributors:

Ono, Yuki (author) / Kinoshita, Koji (author)

Published in:

International Journal of Steel Structures ; 18 ; 1098-1106

Publication date:

2018-05-18

Size:

9 pages

ISSN:

2093-6311 , 1598-2351

DOI:

https://doi.org/10.1007/s13296-018-0061-7

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

SBHS , Fatigue limit , Base metal , Scanning electron microscope , Striation Engineering , Civil Engineering , Solid Mechanics , Materials Science, general

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