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 |
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Pages (from-to) | 58-74 |
Number of pages | 17 |
Journal | Physical Mesomechanics |
Volume | 18 |
Issue number | 1 |
DOIs | |
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)