A method evaluating stress intensity factors of mode I surface-cracks

DOI

10.2991/ismems-17.2018.4How to use a DOI?

Keywords

Surface-cracks; structures; stress intensity factor; loading; opening displacement distributions

Abstract

For mode I surface-cracks detected from structures, a method to evaluate stress intensity factors Kest was suggested by measuring the opening displacement distributions along the crack and calculating stress distributions around it. The stress intensity factors of surface-cracks with different lengths subjecting various loading were evaluated by experiment. The stress intensity factors K were also calculated using the traditional Newman-Raju's formula at the same conditions to demonstrate the effectiveness of this method. As a result, the values of Kest and K were good agreement for all cracks. That was to say, for surface-cracks detected from structures, the method suggested in this paper to evaluate stress intensity factors was efficacious even though the loading applied to the surface-cracks and the depth of it were unknown. So that remainder life of the structures could be evaluated.

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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TY  - CONF
AU  - Youli Ma
AU  - Rongjuan Li
AU  - Xinzhu Pang
PY  - 2017/11
DA  - 2017/11
TI  - A method evaluating stress intensity factors of mode I surface-cracks
BT  - Proceedings of the International Symposium on Mechanical Engineering and Material Science (ISMEMS 2017)
PB  - Atlantis Press
SP  - 16
EP  - 19
SN  - 2352-5401
UR  - https://doi.org/10.2991/ismems-17.2018.4
DO  - 10.2991/ismems-17.2018.4
ID  - Ma2017/11
ER  -