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Structural fracture scales in shock-loaded epoxy composites

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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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Authors and Affiliations

  1. Ternopil National Technical University, Ternopil, 46001, Ukraine

    P. D. Stukhlyak, P. O. Maruschak & K. M. Moroz

  2. Kherson State Maritime Academy, Kherson, 73000, Ukraine

    A. V. Buketov

  3. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Tomsk, 634055, Russia

    S. V. Panin, L. A. Kornienko & B. A. Lyukshin

  4. National Research Tomsk Polytechnic University, Tomsk, 634050, Russia

    S. V. Panin & M. A. Poltaranin

  5. University of Maribor, Maribor, 2000, Slovenia

    T. Vukherer

Authors
  1. P. D. Stukhlyak
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  2. A. V. Buketov
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  3. S. V. Panin
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  4. P. O. Maruschak
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  5. K. M. Moroz
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  6. M. A. Poltaranin
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  7. T. Vukherer
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  8. L. A. Kornienko
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  9. B. A. Lyukshin
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Correspondence to S. V. Panin.

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Original Russian Text © 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, 2014, published in Fizicheskaya Mezomekhanika, 2014, Vol. 17, No. 2, pp. 65–83.

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Stukhlyak, P.D., Buketov, A.V., Panin, S.V. et al. Structural fracture scales in shock-loaded epoxy composites. Phys Mesomech 18, 58–74 (2015). https://doi.org/10.1134/S1029959915010075

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