brittle materials
Impact of Solid Particulate on Brittle Materials
... University of Pisa, Department of Mechanical, Nuclear and Production Engineering, Italy This paper deals with the erosion of brittle materials due to the impact of solid particulate. Erosion tests are ...
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Statistical Fracture Criterion of Brittle Materials Under Static and Repeated Loading
... formulated in the terms of a damage measure of brittle materials. As such one, the concentration of microdefects in the form of flat mode I microcracks stochastically dispersed over a volume was chosen. The ...
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Comparative Studies on Constitutive Models for Cohesive Interface Cracks of Quasi-Brittle Materials
... Experimental results in references (see Hassanzadeh, 1990; Vutukuri, Lama and Saluja, 1974) showed that, failure modes of fracture specimen under mixed mode loading sometimes are path-dependent. Shear stress generates ...
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The influence of the indenter tip radius on indentation testing of brittle materials
... on brittle materials, there are two key parameters to consider; the ®rst is the maximum tension in the surface, as this is the quantity which is responsible for starting and propelling surface defects, and ...
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Interpreting finite element results for brittle materials in endodontic restorations
... The prevalent use of the VM criterion in previous works is probably due to the fact that this is the usual criterion in the majority of engineering calculations and, also for this reason, it is incorporated as the ...
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Pparameters Controlling Abrasive Water Jet Technology: Erosion And Impact Velocity For Both Ductile And Brittle Materials
... soft materials, such as rubber or food ...similar materials that are capable of significant plastic deformation. Brittle erosion applies to ceramics, glasses, and hard metals that crack and fragment ...
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An Image-Based Impact Test for the High Strain Rate Tensile Properties of Brittle Materials
... Abstract. Testing ceramics at high strain rates presents many experimental difficulties due to the brittle nature of the material being tested. When using a split Hopkinson pressure bar (SHPB) for high strain rate ...
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On a Continuum Theory for Crack Propagation in Brittle Materials
... This paper is concerned with the development of a mechanical framework to model crack propagation in brittle materials, under isothermal conditions. The framework to be developed is described within the ...
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K-dominance and size effect in mode I fracture of brittle materials with low to medium porosity
... Linear Elastic Fracture Mechanics usually only considers the singular stresses when describing the conditions under which fracture would occur in a brittle material. However, it is becoming more widely recognised ...
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Damage and dissipation mechanisms in the dynamic fracture of brittle materials: Velocity driven transition from nominally brittle to quasi-brittle
... other brittle materials, among which polystyrene [41], silicate glasses [42], cellulose acetate [43], polycrystalline materials [44], and Homalite ...
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A meshless IRBFN-based numerical simulation of dynamic strain localization in quasi-brittle materials
... Aside from the constitutive aspects the concomitant numerical issues need to deal with highly nonlinear and discontinuous degradation processes. To this end we revisit the elementary model problems of quasi- ...
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Micromechanical model for dilatant crack growth in brittle materials, with applications to rock physical properties
... effects due to stress, are im portant in order to understand various geophysical problems such as the tectonic plate driving mechanism, the energy budget of the E arth, earthquake mechanisms and crustal movements ...
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IMPLEMENTATION OF MODIFIED VIRTUAL INTERNAL BOND METHOD TO INVESTIGATE FRACTURE SIMULATIONS IN BRITTLE MATERIALS
... cohesive surface approach is based on defining discrete cohesive surface.[2] It need to separte fracture criteria.In this paper Modified virtual internal bond was used. This bond density potential is converted into the ...
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New Technology of Laser Parallel Thermocracking of Brittle Materials
... anisotropic materials such as quartz and sapphire. In the case of isotropic materials, such as glass, the depth of the parallel crack distribution is the same for any ...sotropic materials is the ...
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Towards understanding the cutting and fracture mechanism in ceramic matrix composites
... specially brittle materials can experience during the ma- chining at relative low uncut chip ...machining brittle materials ...composites materials such as CMCs where due to their ...
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Micromechanical Aspects of Failure in Unidirectional Fiber Reinforced Composites
... Longitudinal cross-section of a failed composite specimen with proportional lateral confinement showing conjugate kink band fonnation.. When nominally brittle materials such as co[r] ...
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Crack Free Joint in a Ni Al2O3 FGM System Using Three Dimensional Modeling
... assumed ideal joining and dispersion between the two materials. In addition, the elastic modulus, CTE, Poisson’s ratio, and critical strength of each layer were calculated based on the linear rule of mixtures. The ...
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A review: The effects of particle properties on solid particle erosion for oil and gas pipelines applications
... target materials were eroded with various erodent with different shapes, sizes ranging from 63 - 1000 µm at velocities of 33-99 m/s and impact angles of 30 o -90 o ...ductile materials where else the ...
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Shell Mold Cracking and Its Prediction during Casting of AC4C Aluminum Alloy
... For a mold that is exposed to an even distribution of tensile stress, for example in the case of the cup-shaped mold without thinly ground part, the tensile strength of the mold can be considered as the criterion for ...
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The numerical study of the influence of material parameters on the regime of adhesive wear of surface asperities
... polymeric materials with ductility based on a motion of translational defects of an atomic ...of brittle materials and materials with a high initial concentration of damages significantly ...
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