Prediction of fatigue life of aluminum 2024-T3 at low temperature by finite element analysis

  • S. Mazlan Department of Aerospace Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +603 - 9769 4413; Fax: +603 - 9769 4488
  • N. Yidris Department of Aerospace Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +603 - 9769 4413; Fax: +603 - 9769 4488
  • R. Zahari System Engineering Department, Military Technological College, P.O Box 262 PC 111, Muscat, Sultanate of Oman
  • E. Gires Department of Aerospace Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +603 - 9769 4413; Fax: +603 - 9769 4488
  • D.L.A. Majid Department of Aerospace Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +603 - 9769 4413; Fax: +603 - 9769 4488
  • K.A. Ahmad Department of Aerospace Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +603 - 9769 4413; Fax: +603 - 9769 4488
Keywords: Aluminum 2024-T3, Fatigue test, Low temperature, ANSYS Workbench

Abstract

The change in material properties at low temperature has always been one of the concerned design factors in aircraft industries. The wings and fuselage are repeatedly exposed to sub zero temperature during cruising at high altitude. In this study, fatigue tests were conducted on standard flat specimens of aluminum 2024-T3 at room temperature and at -30 °C. The monotonic and cyclic loading tests were conducted using MTS 810 servo hydraulic machine equipped with a cooling chamber. The monotonic tests were conducted at a crosshead speed rate of 1 mm/min and the cyclic tests at a frequency of 10 Hz with a load ratio of 0.1. The experimental data obtained, such as the yield strength, ultimate strength and S-N curve were used as the input parameters in ANSYS Workbench 16.1. This close agreement demonstrates that the isotropic model in ANSYS workbench is essential in predicting fatigue life. The increase in stress parameter causes fatigue life to decrease. Besides, the decrease in temperature causes the total fatigue life to increase.

Published
2020-09-30
How to Cite
Mazlan, S., Yidris, N., Zahari, R., Gires, E., Majid, D., & Ahmad, K. (2020). Prediction of fatigue life of aluminum 2024-T3 at low temperature by finite element analysis. Journal of Mechanical Engineering and Sciences, 14(3), 7170 - 7180. https://doi.org/10.15282/jmes.14.3.2020.18.0563