A ferritic-pearlitic nodular iron automobile suspension knuckle was fatigue tested in the laboratory using a constant amplitude load level that simulated a severe service condition. It was found that cracks always initiated from surface casting defects and that the fatigue life could be extended significantly by machining away the as-cast surface in the fatigue sensitive locations. Both local strain and fracture mechanics approaches were used successfully to predict the fatigue life of the component.
Fatigue Evaluation of a Nodular Cast Iron Component
Sae Technical Papers
International Congress & Exposition ; 1992
1992-02-01
Conference paper
English
Fatigue evaluation of a nodular cast iron component
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