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- Article name
- Definition of CCCM local elastic properties using the indentation method: test specimen strain-stress state
- Authors
- MAGNITSKY I. V., , info@kompozit-mv.ru, JSC Kompozit, Korolev, Moscow region, Russia
ANDREEVA Yu. D., , info@kompozit-mv.ru, JSC "Kompozit", Korolyov, Moscow region, Russia
- Keywords
- indentation / carbon-carbon composite materials / strain-stress state / elasticity modulus
- Year
- 2019 Issue 1 Pages 31 - 35
- Code EDN
- Code DOI
- Abstract
- Measurement of local elastic properties of composite materials is critical when designing items made thereof. However the experimental methods in use fail to provide reliable results. Modeling of penetration of spherical indenters of various sizes into a carbon-carbon composite matrix was carried out; equivalent stress-based strength analysis of the stress state of the matrix was performed. The large-diameter spherical indenter was shown to be optimal for elasticity modulus measurements. It was noticed that since the contact area stiffness is significant, stiffness of loading circuit components for the indentation device should be high. Obtained results may be used for indentation devices development.
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