FIELD: study of materials. SUBSTANCE: sample is cut from member of tested structure. Sample is subjected to compressing load up to destruction and deformation curve σ = f(ε) is determined. Member of structure is loaded with additional load and stress Δσ and relative deformation De corresponding to it are found. Ratio Ds/Δε is established and stress s′ and deformation ε′ corresponding to this ratio are determined by deformation curve. They are used as parameters by which stress-deformed state of member of structure is evaluated. EFFECT: improved authenticity of method. 3 dwg
