Fatigue Study On Metal Using Tensile Load

Ros Azura, Mohsin (2007) Fatigue Study On Metal Using Tensile Load. Project Report. UTeM, Melaka. (Submitted)

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Abstract

Fatigue is a process at cumulative damage that is caused by repeated fluctuating loads. This is done by applying tensile test onto specimens to determine maximum yield point then followed by fatigue test In this research, 1 0 specimens were used due to standard dimensional in American Standard Test Method. The purpose of this research was to investigate life cycles of low carbon steel. AISI 1020 type steel was chosen representing the low carbon steel for this study. To obtain specimens required, raw materials were cut into 10 piecess by Scantool Raspsaw Machine then followed by fabricate them using CNC Lathe Machine. Tensile test were run to obtain maximum yield stress. From the value, five mean stresses value were chosen to run fatigue test on the specimens. The fatigue test will result life cycles for each mean stresses and they were recorded into a table. Then S-N curve was plotted. From the S-N curve, we can determine the life cycle of a material corresponding to the load that applied. Hence, we can avoid any damages before it fails. The more benefits will be realized including safety and economic.

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