Research into the relationship of mechanical properties of grey cast iron through acoustic non-destructive testing

Abstract

The following acoustic characteristics are measured in this study: the velocity of longitudinal waves Cl and the attenuation coefficient of ultrasound δ in samples of grey cast iron, which are obtained by centrifugal casting. The correlations between the mechanical properties, the acoustic non-destructive testing characteristics and the structure formation of the test specimens of cast iron with flaked graphite are studied. The study shows that data on the structure formation can be obtained, followed by the mechanical properties, hardness and tensile strength, by measuring the speed and attenuation of the ultrasound.