Universiti Teknologi Malaysia Institutional Repository

Effect of Loading Frequency on Fatigue Behavior of Magnesium Alloy in Humid Environment

Sajuri, Zainuddin and Miyashita, Yukio and Mutoh, Yoshiharu (2006) Effect of Loading Frequency on Fatigue Behavior of Magnesium Alloy in Humid Environment. In: 1st Regional Conference on Vehicle Engineering & Technology, 3-5 July 2006, Kuala Lumpur, Malaysia.

[img]
Preview
PDF (Full text)
857Kb

Abstract

Effect of loading frequency on fatigue behavior of an extruded AZ61 magnesium alloy was investigated at 50? -80%RH environment. The frequencies applied were 1 and 10 Hz. It was found that at stresses below the fatigue limit (at 20? -55%RH), the fatigue fracture was time dependent where fatigue lives for both frequencies were almost identical. In contrast, the fatigue fracture in the region higher than the fatigue limit was dominated by the number of loading cycles. Fatigue fracture at low stress amplitudes for both frequencies were originated from the corrosion pit formed on the surface. Effect of frequency on fatigue crack growth behavior was also investigated. The results showed that in the near-threshold region, the 1 Hz frequency demonstrated higher fatigue crack growth resistance compared to the 10 Hz.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Fatigue; Frequency; Environment; Corrosion pit; Magnesium alloy
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:267
Deposited By: Mrs. Junaidah Abdullah
Deposited On:15 Feb 2007 04:08
Last Modified:01 Jun 2010 02:42

Repository Staff Only: item control page