Construction of stress-strain curves for aviation materials database formation

Authors:
B.E. Vasilyev М.Е. Volkov Е.N. Bredihina I.I. Pleshcheev
Abstract:

This paper discusses specific aspects of elasto-plastic behavior of various materials. It was shown, that during tensile test additional measurements are necessary for constructing stress-strain diagram. Concept of minimal stress-strain curve is presented. Issues and difficulties arising in obtaining and minimal stress-strain curve are discussed. Methods of obtaining statistically valid engineering and true stress-strain curves are introduced.