The Dynamic Yielding of Mild Steel

Abstract

<p> Dynamic stress tests were performed on mild steel samples. The material parameters 'n' and 'G(εᵣ, tₒ)', defined as 'stress dislocation velocity exponent' and 'flow function' respectively, were evaluated using the equation "σₘⁿtₒ K(n) = G(εᵣ, tₒ)" as proposed by Kardos (1). The values determined for 'n' are in agreement with the results obtained by other researchers using different techniques. </p> <p> The equipment for studying the response of materials to dynamic loading was modified to permit a wider duration range for the loading. </p> <p> A technique was developed to monitor the pressure of the oil in the intensifier throughout the entire loading cycle. </p>