Casting Aluminum Fatigue Assessment Correction Method Based on Crack Propagation Prediction

DOI

10.2991/iceesd-18.2018.41How to use a DOI?

Keywords

Casting Aluminum; Crack Propagation; Fatigue Assessment; Prediction

Abstract

The fatigue requirement of casting aluminum alloy is varied for different industry, however, it is hard to avoid porosity, shrinkage, or slag during the casting process, leading to uneven quality of casting. the fatigue strength will be influenced by casting porosity, DAS length or stress level. This paper takes single reduction gearbox housing (material for AlSi7Mg0.3) as an example to analyze the prediction algorithm of crack propagation, deduce the key parameters for deciding crack propagation, and carry out a series of experimental studies for casting aluminum fatigue. According to the results of calculation and experiment, the correction coefficient is introduced based on FKM guideline and EN 1999 standard, besides, the evaluation method of fatigue strength has been corrected. As one example, the test results show that if casting aperture diameter more than 0.5 mm, the stress amplitude of fatigue load should not be more than 38.28MPa for load cycles.

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/).

Download article (PDF)

TY  - CONF
AU  - Guodong Li
AU  - Xingyu Wang
AU  - Jing Zeng
PY  - 2018/05
DA  - 2018/05
TI  - Casting Aluminum Fatigue Assessment Correction Method Based on Crack Propagation Prediction
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 245
EP  - 254
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.41
DO  - 10.2991/iceesd-18.2018.41
ID  - Li2018/05
ER  -