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600 (0,084s) •

Project

The micromechanics of self-affine fractal cracks in brittle materials (GA106/06/0646)

Micro-structural effects on the fractality of cracks in brittle and quasi-brittle materials will be investigated. Irregularities of fracture surface described from its initiation to final brittle fract...

JL - Únava materiálu a lomová mechanika

  • 2006 - 2008
    • •
  • 2 362 tis. Kč
    • •
  • 2 362 tis. Kč
    • •
  • GA ČR
Project

Nonlinear fracture in structural materials – investigation of expressions of energy dissipation in failure zone via advanced experiments and modelling (GA15-07210S)

During fracture of quasi-brittle/ductile materials the energy dissipates in an extensive nonlinear area at the crack tip. This zone consists of the fracture process standard fracture toughness tests, altho...

JL - Únava materiálu a lomová mechanika

  • 2015 - 2017
    • •
  • 7 630 tis. Kč
    • •
  • 7 630 tis. Kč
    • •
  • GA ČR
Project

Fracture initiation and fracture of quasi-brittle building materials (FInFraM) (8J18AT009)

of failure initiation and fracture of selected quasi-brittle building materials using double-K fracture model. A thought out experimental campaign and numerical analyses fracture behaviour of silicate-bas...

Construction engineering, Municipal and structural engineering

  • 2018 - 2019
    • •
  • 195 tis. Kč
    • •
  • 195 tis. Kč
    • •
  • MŠMT
Project

Fracture parameters of building ceramics (GP103/08/P608)

The quasi-brittle material models originally developed for concrete are often transferred to ceramic materials. The non-linear quasi-brittle material model should be taken into account in such cases, where the ...

JN - Stavebnictví

  • 2008 - 2010
    • •
  • 765 tis. Kč
    • •
  • 765 tis. Kč
    • •
  • GA ČR
Project

Estimation of higher terms of the Williams expansion and their use for fracture response description in structures made of quasi-brittle composites (GPP105/12/P417)

Higher order terms of the crack tip asymptotic field refine the fracture-mechanical description of the behaviour of cracked bodies. They can play a key role in quasi-brittle materials (such as ceramics, rocks or cement-base...

JL - Únava materiálu a lomová mechanika

  • 2012 - 2014
    • •
  • 2 314 tis. Kč
    • •
  • 2 314 tis. Kč
    • •
  • GA ČR
Project

Fracture-mechanical parameters of quasibrittle materials in simulation of structural response (FRAPA) (GA13-03662S)

for determination of fracture-mechanical parameters of concrete and other quasi-brittle software tool which enable reliability assessment of structures made of quasi-brittle emphasize is on assessment of ...

JN - Stavebnictví

  • 2013 - 2016
    • •
  • 4 996 tis. Kč
    • •
  • 4 996 tis. Kč
    • •
  • GA ČR
Project

Energetic and stress state aspects of quasi-brittle fracture ? consequences for determination of fracture-mechanical parameters of silicate composites (GAP105/11/1551)

The project focuses on fracture of quasi-brittle silica-based materials determiningpure material values of fracture parameters independent of the test geometry. These values can serve as relevant inputs for structu...

JL - Únava materiálu a lomová mechanika

  • 2011 - 2013
    • •
  • 5 497 tis. Kč
    • •
  • 4 997 tis. Kč
    • •
  • GA ČR
Project

Advanced characterization of cracks propagation in composites based on alkali activated matrix (GJ18-12289Y)

fracture mechanics approach) for description of crack propagation and estimation of the fracture process zone extent in a quasi-brittle specimen subjected to mixed-mode from quasi-brittle composi...

Civil engineering

  • 2018 - 2020
    • •
  • 4 999 tis. Kč
    • •
  • 4 999 tis. Kč
    • •
  • GA ČR
Project

Laboratory for Modelling of Behaviour of Quasi-brittle Materials (VS97040)

The project is focused on the research of mechanical behaviour of quasi-brittle materials as concrete, rocks, and ceramics under service und ultimate load conditions. The investigation is both teoretical and experimental. The teoret...

JN - Stavebnictví

  • 1997 - 2000
    • •
  • 19 924 tis. Kč
    • •
  • 10 822 tis. Kč
    • •
  • MŠMT
Project

Specimen geometry influence and size effect on fracture parameters of cementitious composites (GP103/07/P403)

The proposal presented is focused on the fracture behaviour of cement-based composites. Recent nonlinear fracture theories for fracture of the composites exploit. Fracture models based on both approaches are handle...

JL - Únava materiálu a lomová mechanika

  • 2007 - 2009
    • •
  • 1 342 tis. Kč
    • •
  • 1 342 tis. Kč
    • •
  • GA ČR
  • 1 - 10 out of 600