Modern Applied Science, Vol. 3, No. 12, December, 2009

MAS, Editor

doi:10.5539/mas.v3n12p0

Cited by 1 publication

(1 citation statement)

References 35 publications

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“…Fatigue at elevated temperature produce a larger strain deformation, assist in the crack initiation process and accelerate the crack propagation rate. The material or structural subjected to cyclic loading at elevated temperature may fail in different modes from normal fatigue fracture [4].…”

Section: Introductionmentioning

confidence: 99%

Elevated Temperature Fatigue Fracture Behaviour of Aluminium Alloy Subjected to Spectrum Loadings

Zakaria

Abdullah²,

Ghazali³

et al. 2012

AMM

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This paper discusses the fatigue fracture behaviour of aluminium alloy AA6061-T6 under spectrum loadings at room and elevated temperatures. The load sequence can have a very significant effect in fatigue lives and normally the fatigue strength of material decrease with increasing temperature. In this study, variable amplitude loading (VAL) signal was obtained from the engine mount bracket of an automobile in a normal driving condition. Constant amplitude loading (CAL), high to low and low to high spectrum loadings were then derived from the VAL obtained from the data capturing process to study the fatigue behaviour that subjected to spectrum loadings at the room and elevated temperatures. The fatigue tests were performed according to an ASTM E466 standard using a servo-hydraulic fatigue testing machine. Fatigue fracture surfaces were then sectioned and inspected by employing a high magnification microscope. Results indicated that fracture surface behaviours of specimens were influenced significantly by the load sequence and temperatures, which can be related to the fatigue lives of aluminium alloy under spectrum loadings.

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Section: Introductionmentioning

confidence: 99%