THE INFLUENCE OF NOTCH, TEMPERATURE AND STRAIN RATE ON THE MECHANICAL PROPERTIES OF METALLIC MATERAIL : Part 1 The evaluation of notch effects by using triaxiality factor

Abstract

The purpose of this study is to understand the behavior of materials influenced by the stress-strain concentrations, which occurs at the discontinuous shapes. The effects of notch to the strength can be evaluated quantitatively by the Triaxiality Factor, which is defined by the stress distributions at the notch section. And the Triaxiality Factor can be estimated by the geometrical shape of the notch. It is possible to understand the notch effects to the strength, just only knowing the material properties and the geometrical shape.