Structural fracture scales in shock-loaded epoxy composites

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

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)

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10.1134/S1029959915010075

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@article{4e83e0c034ee472bb644bea9e77a9965,

title = "Structural fracture scales in shock-loaded epoxy composites",

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.",

keywords = "brittleness, deformation, energy capacity, fracture mechanisms, impact strength, stress concentration",

author = "Stukhlyak, {P. D.} and Buketov, {A. V.} and Panin, {S. V.} and Maruschak, {P. O.} and Moroz, {K. M.} and Poltaranin, {M. A.} and T. Vukherer and Kornienko, {L. A.} and Lyukshin, {B. A.}",

year = "2015",

doi = "10.1134/S1029959915010075",

language = "English",

volume = "18",

pages = "58--74",

journal = "Physical Mesomechanics",

issn = "1029-9599",

publisher = "Springer Science + Business Media",

number = "1",

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TY - JOUR

T1 - Structural fracture scales in shock-loaded epoxy composites

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

Y1 - 2015

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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DO - 10.1134/S1029959915010075

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JO - Physical Mesomechanics

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