Structural fracture scales in shock-loaded epoxy composites

P. D. Stukhlyak, A. V. Buketov, S. V. Panin, P. O. Maruschak, K. M. Moroz, M. A. Poltaranin, T. Vukherer, L. A. Kornienko, B. A. Lyukshin

Division for Materials Science

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

Shock fracture mechanisms of different scales were investigated on epoxy composite materials reinforced with silicon carbide microparticles of different concentrations. It is shown that the high heterogeneity of the epoxy composites at different structural scales is one of the factors responsible for their physical and mechanical properties. Under dynamic loading, the material reveals a developed structural scale hierarchy which provides self-consistent deformation and fracture of the material bulk with the lead of rotational deformation modes. As a result, microcracks develop due to low shear strain limited in addition by reinforcing particles. At the start of a main crack, microscale mechanisms dominate, whereas the propagation of its front is governed by macroscale fracture mechanisms.

Original language	English
Pages (from-to)	58-74
Number of pages	17
Journal	Physical Mesomechanics
Volume	18
Issue number	1
DOIs	https://doi.org/10.1134/S1029959915010075
Publication status	Published - 2015

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Keywords

brittleness
deformation
energy capacity
fracture mechanisms
impact strength
stress concentration

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Mechanics of Materials
Materials Science(all)

Cite this

Stukhlyak, P. D., Buketov, A. V., Panin, S. V., Maruschak, P. O., Moroz, K. M., Poltaranin, M. A., ... Lyukshin, B. A. (2015). Structural fracture scales in shock-loaded epoxy composites. Physical Mesomechanics, 18(1), 58-74. https://doi.org/10.1134/S1029959915010075

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abstract = "Shock fracture mechanisms of different scales were investigated on epoxy composite materials reinforced with silicon carbide microparticles of different concentrations. It is shown that the high heterogeneity of the epoxy composites at different structural scales is one of the factors responsible for their physical and mechanical properties. Under dynamic loading, the material reveals a developed structural scale hierarchy which provides self-consistent deformation and fracture of the material bulk with the lead of rotational deformation modes. As a result, microcracks develop due to low shear strain limited in addition by reinforcing particles. At the start of a main crack, microscale mechanisms dominate, whereas the propagation of its front is governed by macroscale fracture mechanisms.",

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AU - Stukhlyak, P. D.

AU - Buketov, A. V.

AU - Panin, S. V.

AU - Maruschak, P. O.

AU - Moroz, K. M.

AU - Poltaranin, M. A.

AU - Vukherer, T.

AU - Kornienko, L. A.

AU - Lyukshin, B. A.

PY - 2015

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N2 - Shock fracture mechanisms of different scales were investigated on epoxy composite materials reinforced with silicon carbide microparticles of different concentrations. It is shown that the high heterogeneity of the epoxy composites at different structural scales is one of the factors responsible for their physical and mechanical properties. Under dynamic loading, the material reveals a developed structural scale hierarchy which provides self-consistent deformation and fracture of the material bulk with the lead of rotational deformation modes. As a result, microcracks develop due to low shear strain limited in addition by reinforcing particles. At the start of a main crack, microscale mechanisms dominate, whereas the propagation of its front is governed by macroscale fracture mechanisms.

AB - Shock fracture mechanisms of different scales were investigated on epoxy composite materials reinforced with silicon carbide microparticles of different concentrations. It is shown that the high heterogeneity of the epoxy composites at different structural scales is one of the factors responsible for their physical and mechanical properties. Under dynamic loading, the material reveals a developed structural scale hierarchy which provides self-consistent deformation and fracture of the material bulk with the lead of rotational deformation modes. As a result, microcracks develop due to low shear strain limited in addition by reinforcing particles. At the start of a main crack, microscale mechanisms dominate, whereas the propagation of its front is governed by macroscale fracture mechanisms.

KW - brittleness

KW - deformation

KW - energy capacity

KW - fracture mechanisms

KW - impact strength

KW - stress concentration

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Access to Document

10.1134/S1029959915010075