Elasto-Plastic Deformation of Structural Materials: an Experimental Research Using Complex Loading Technology (SN-EVM)

This paper is devoted to the description of an automated complex SN-EVM (Complex Loading – Computerized Test) developed for the experimental study of elastic-plastic deformation of structural materials and the response of materials under real operational loads. The article describes the mechanical part of the complex, including an autonomous control unit, the parameters of measuring equipment used to record loads and deformations, the samples used, and the technical requirements for these samples (shape, dimensions, and tolerances). The results of basic experiments on the type of central fan necessary for estimating the initial isotropy or anisotropy of the studied material are presented, as well as some numerical values obtained during the tensile experiment, a method for processing results under complex loading, and the construction of deformation diagrams. Conclusions are drawn regarding the importance of basic experiments and directions for future research development. The results of the study contribute to an understanding of the mechanical behavior of materials beyond elasticity, which is crucial for improving the reliability, durability and safety of engineering structures.