Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

Estimation of Fracture path in the Structures and the Influences of Non-singular term on crack propagation

In the present research, a fully Automatic crack propagation as one of the most complicated issues in fracture mechanics is studied whether there is an inclusion or no inclusion in the structures. In this study The Extended Finite Element Method (XFEM) is utilized because of several drawbacks in standard finite element method in crack propagation modeling. Estimated Crack paths are obtained by ...

Part A- Experimental: Experimental Analysis of Crack Propagation in Pre-stressed Concrete Sleepers by Fracture Mechanics

This study investigates propagation of mode I crack in B70 pre-stressed concrete sleepers by fracture mechanics approach. A new experimental analysis is done for notched B70 pre-stressed concrete sleepers with Replica test and image analysis. A scanning electron microscope test (SEM) and an image analysis are applied for the Replica test in order to determine crack length and crack mouth openin...

Buoyancy-driven crack propagation: the limit of large fracture toughness

Molecular Dynamics Simulations of Crack Propagation

Crack propagation is studied in a two-dimensional binary model-quasicrystal by molecular dynamics simulations. Three regimes of motion can be discerned: An intermittent regime with stop and go, a regime of steady motion and an unstable regime with branching. In the rst two regimes the crack tip is emitting disloca-tions, which are followed by a phason wall. Along this wall the material is openi...

Crack propagation and fracture in silicon wafers under thermal stress

The behaviour of microcracks in silicon during thermal annealing has been studied using in situ X-ray diffraction imaging. Initial cracks are produced with an indenter at the edge of a conventional Si wafer, which was heated under temperature gradients to produce thermal stress. At temperatures where Si is still in the brittle regime, the strain may accumulate if a microcrack is pinned. If a cr...