Research of the geometric section for sclerometric furnish sections obtained on the cured binding EDT-69N at different load levels for inductor

Veshkin E.A, Semenychev V.V., Postnov V.I., Krasheninnikova E.V.
UDC
620.1:667.621
DOI
10.18577/2307-6046-2020-0-3-74-81
Article PDF (Russian) (816.47 KB)
How to cite
Veshkin E.A, Semenychev V.V., Postnov V.I., Krasheninnikova E.V. Research of the geometric section for sclerometric furnish sections obtained on the cured binding EDT-69N at different load levels for inductor // Proceedings of VIAM. 2020. No. 3. DOI: 10.18577/2307-6046-2020-0-3-74-81. URL: https://test.viam.ru/en/journal/2020/3/8
Keywords
composite material, binder EDT-69N, curing modes, sclerometry, microhardness, roughness, microscopic studies.
Abstract

EDT-69H binder samples cured under various temperature and time conditions were scratched using a laboratory sclerometer over a wide range of indenter loads. The obtained sclerometric grooves were measured andgraphs were plotted for changes in the width and depth of the grooves depending on the load on the samples of composites, cured at different conditions. The geometric shape of the cross-section of the grooves was studied on the transverse sections of plastic samples, the depth of the grooves on the microsections was specified and the microhardness values in the region of deformation of the material from the action of the indenter of the sclerometer were estimated. It has been established that the microhardness value and sclerometric characteristics are very sensitive parameters to the technological modes of curing the binder. The change in the roughness of the front surface of samples with different curing modes was studied and it was shown that an increase in the microhardness of the surface of the sample leads to a decrease in its roughness.

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