Proceedings of the International Symposium on Mechanical Engineering and Material Science (ISMEMS 2017)

Evaluation of initial fatigue growth behavior for surface-cracks

Authors
Youli Ma, Rongjuan Li
Corresponding Author
Youli Ma
Available Online November 2017.
DOI
10.2991/ismems-17.2018.3How to use a DOI?
Keywords
Surface-cracks; FEM analysis; stress intensity factor; fatigue growth; residual stress of pressure
Abstract

In order to predict the remaining life of the surface-cracks in the mechanical component, a method to evaluate the stress intensity factor of the crack tip is proposed. In this paper, finite element simulation is firstly used to evaluate stress intensity factor KFEM of the crack under different load and sizes. The KFEM is compared with K calculated by Newman-Raju equation for the same crack. The evaluation results of KFEM are basically same with K that calculated by the previous empirical formula, which verifies the reliability of the evaluation method. During the process of initial fatigue growth, stress intensity factor Kest at the end of the surface-cracks is investigated by experiment. In results, the stress intensity factor proposed in this paper is efficacious for surface-cracks with residual stress, even though the load applied to surface-cracks and crack depth are unknown.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Symposium on Mechanical Engineering and Material Science (ISMEMS 2017)
Series
Advances in Engineering Research
Publication Date
November 2017
ISBN
978-94-6252-450-7
ISSN
2352-5401
DOI
10.2991/ismems-17.2018.3How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Youli Ma
AU  - Rongjuan Li
PY  - 2017/11
DA  - 2017/11
TI  - Evaluation of initial fatigue growth behavior for surface-cracks
BT  - Proceedings of the International Symposium on Mechanical Engineering and Material Science (ISMEMS 2017)
PB  - Atlantis Press
SP  - 11
EP  - 15
SN  - 2352-5401
UR  - https://doi.org/10.2991/ismems-17.2018.3
DO  - 10.2991/ismems-17.2018.3
ID  - Ma2017/11
ER  -