Fatigue small crack propagation analysis of aero-aluminium alloy considering crack tip plasticity
Authors
Guangming Kong, Xuexia Gao, Xudong Li, Zhitao Mu, Tao Liu
Corresponding Author
Guangming Kong
Available Online April 2015.
- DOI
- 10.2991/mebe-15.2015.161How to use a DOI?
- Keywords
- aluminum alloy; fatigue small crack; crack tip plasticity; crack propagation rate.
- Abstract
An appropriate fatigue crack growth model is the key to accurately evaluate fatigue life of component. Researching on the McEvily model, considering the influence of elastic-plastic behaviour and crack closure, a modified elastic-plastic small crack propagation characterization model is proposed. The effects of parameters on growth rate of fatigue crack was studied using scanning electron microscopy (SEM) in-situ observation by experimental results on 6151-T6 aluminium alloy. Results indicate that the modified model is able to characterize small crack propagation behaviour, expanding the region to be precisely predicted, which is remarkably important for fatigue life prediction and damage tolerant analysis of aluminium structure.
- Copyright
- © 2015, 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 - Guangming Kong AU - Xuexia Gao AU - Xudong Li AU - Zhitao Mu AU - Tao Liu PY - 2015/04 DA - 2015/04 TI - Fatigue small crack propagation analysis of aero-aluminium alloy considering crack tip plasticity BT - Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering PB - Atlantis Press SP - 709 EP - 713 SN - 2352-5401 UR - https://doi.org/10.2991/mebe-15.2015.161 DO - 10.2991/mebe-15.2015.161 ID - Kong2015/04 ER -