MEASUREMENT METHOD FOR DETERMINATION OF MATERIAL PROPERTIES IN CONDITION OF RAPID HEATING AND HIGH DEFORMATION RATES

摘要

This work deals with a proposal of measuring method used to establish material properties measured in conditions of rapid heating and high deformation rates. These conditions are typical for recent technological processes. However, no exact material characteristics have been available for the development of these processes. The knowledge of stress-strain behaviour of material is necessary for development and optimization of technological process, particularly when FEM simulation is applied. The parameters have been in many cases just estimated. To measure them precisely, new technique has been designed which enables us to determine the forces applied to the specimens and specimens deformations during dynamical loading controlling temperature development at the same time.