METHOD FOR DETERMINATION OF STRENGTH OF CARBON SUBSTANCE Russian patent published in 2023 - IPC E21C39/00 

Abstract RU 2790335 C1

FIELD: testing.

SUBSTANCE: method for determination of strength of carbon substance relates to physical and mechanical tests of materials having a brittle fracture mode. The method for determination of strength of carbon substance consists in that samples of at least two granulometric fractions of a different size within 0.4-5 mm are selected, each fraction is placed in turn to a container with a volume V, deformed, a value of load σ is fixed for each fraction as a function of relative sample deformation ε. A dependence of the difference of relative deformations for fractions of a different size with the same value of load Δε(σ) is determined, while an extremum point is isolated from the resulting dependencies, and it is considered that a load corresponding to this point is ultimate strength of carbon substance.

EFFECT: increase in the accuracy of determination of strength of carbon substance and reduction in labor intensity of the manufacture of samples.

1 cl, 6 dwg

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RU 2 790 335 C1

Authors

Starikov Gennadij Petrovich

Melnik Tatyana Nikolaevna

Neskreba Denis Anatolevich

Shazhko Yaroslav Vitalevich

Borisenko Eduard Vadimovich

Dates

2023-02-16Published

2021-07-29Filed