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 ...

Dental enamel is highly transparent at near-IR wavelengths and several studies have shown that these wavelengths are well suited for optical transillumination for the detection and imaging of tooth decay. We hypothesize that these wavelengths are also well suited for imaging cracks in teeth. Extracted teeth with suspected cracks were imaged at several wavelengths in the near-IR from 1300-1700-n...

Fracture mechanics is a vital component involved in studying the exact behavior of rock materials. Detection and assessment of the behavior of rock joints injected by grout plays an important role in numerical modelling in rock mechanic projects. The importance of mechanisms associated with initiation and propagation of cracks due to hydraulic fracturing has led to a considerable interest in in...

A new particle-based method, the material point method (MPM), has recently been extended to handle explicit cracks in a new algorithm called CRAMP or “CRAcks with Material Points.” This new method has several advantages for numerical work on fracture. Compared to finite element analysis, CRAMP can handle cracks with similar algorithmic efficiency, but is better at handling crack surface contact...

In order to analyze the anti-reflective cracking performance of a full-depth asphalt pavement and study propagation process reflection crack its influencing factors, mechanical model structural analysis was established based on ABAQUS finite element software extended method (XFEM). Based two different loading modes three-point bending direct tension, is analyzed. The results show that better th...

Deformation damage during tension and compression were revealed using in-situ neutron diffraction for a high manganese steel: (1) When the tensile stress is increased, an indication of provided when 111 422 lattice strains along transverse direction give no more contraction or even expansion. This because that replacement slip twinning activities by crack propagation induces relaxation, which c...

The reliability of processes with moving elastic and isotropic material containing initial cracks is considered in terms of fracture. The material is modelled as a moving plate which is simply supported from two of its sides and subjected to homogeneous tension acting in the travelling direction. For tension, two models are studied: i) tension is constant with respect to time, and ii) tension v...

This article describes a method for modeling the propagation of cracks on any 30 surface. Taking a previous cellular automata model as basis [13], this method allows about any type of cracks on any type of triangulated 30 object. Our model’s main advantage is that it proposes a semi-physical solution, making it at the same time user controllable and easily extensible. After summarizing works in...

The use of fibers in Reinforced Concrete (RC) elements changes their cracking pattern, leading to narrower and more closely spaced cracks. In addition, the presence can improve steel-to-concrete bond behavior reducing interface damage after cracking. Cracks work like paths, for aggressive agents, reach rebar elements, initiation period corrosion process, favoring at intersection between cracks ...