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The St. Vitus Cathedral is a part of the cultural heritage of Czech nation. Tendency to preserve this great building leads to the monitoring of load-bearing structure of [...]
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In the past decade, the economy of China has been increasing at a remarkable speed, which causes the rapid increase of automobile industry. Researches in past years demon [...]
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The modelling of reinforced concrete slabs is a topic of this paper. The main attention is paid to the cracks propagation, the increase and localization of the damage and [...]
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The occurrence of deformation twins in the ductile-to-brittle transition (DBT) temperature region were observed under different testing conditions. Mechanical twinning c [...]
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Dynamic fragmentation (disintegration of continuous body into smaller pieces under dynamic loading) is a physical phenomenon observed in many fields of engineering and sc [...]
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Cracking behavior of lime mortar renders subjected to shrinkage is numerically investigated by the finite element method (FEM). The render materials selected for the stud [...]
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In this paper is solved a 3D analysis of growing crack of the chevron notched three-point-bending specimen. On macroscale the specimen body is modeled as an elastic homog [...]
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The contribution deals with the 3D analysis of the chevron notched three point bending specimen which is used to determine the fracture toughness of brittle matrix compos [...]
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Abstrakt: Existence of the interface between regions with different elastic properties have a pronounced influence on the behaviour of cracks The aim of the present contr [...]
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Presented paper deals with fracture behaviour of carbon fibre reinforced composites on the basis of Portland (PC) and alumina (HC) cement. Carbon fibres can be used for [...]
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In case of two-parameter linear fracture mechanics a study of inhomogeneity influence on behaviour of short cracks is performed. The values of stress intensity factor (KI [...]
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SUZUKI, Tetsuya
The Great East Japan Earthquake hit Tohoku Area in Japan on March 11, 2011. A large number of concrete structures were damaged by the 9.0 magnitude earthquake in Richter- [...]
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Abstrakt: A stability criterion based on generalized strain energy density factor for a crack terminating at the bi-material inteiface is suggested. The strain energy den [...]
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Fracture behaviour of concrete is studied using two-phase material model. Propagation of a single macrocrack in hardened cement paste (matrix) and aggregate (particle) is [...]
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Cyclic tests with the maximum force in a cycle Fmax = 5,5 kN and the cycle asymmetry ratio R = F min / F max = 0, 1 were carried out on fiat specimens of 5mm in thickness [...]
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The crack growth prediction techniques in the critical area of the small transport aircraft undercarriage bracket has been describe in this paper. Stress-state was determ [...]
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Ferfecki, P.
For the purpose of efficient diagnostics of fault conditions the influence of transverse fatigue crack on dynamical behaviour of a rotor system supported by active magnet [...]
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The contribution discusses possible approach for the formulation of fracture criteria for the general stress concentrators – especially a surface crack terminating at t [...]
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Structures operating at high temperatures are damaged by creep processes. If the structure is also subjected to cyclic loading, the fatigue damage is usually significant. [...]
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The fatigue crack growth rate in the Eurofer 97 steel was measured by two different methodologies. Small crack growth data were obtained using cylindrical specimens with [...]
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A 3D elastic-plastic FEM model with small strains was used for simulation of the deformation mechanics at the curved front of the planar fatigue crack growing in the thic [...]
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The aim of this paper is to investigate the beginnings of crack propagation from sharp V-notches. Stress distribution around the tip of a V-notch is described on the basi [...]
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This contribution deals with reliability of railway wheels as influenced by the occurrence of impaired limiting material strength. Results are presented of material inves [...]
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Abstrakt: The transverse-axial tubular system (TAT-system) of cardiac muscle is a structure that allows rapid propagation of excitation into the cell interior. As suggest [...]
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A substantial number of experimentally based works indicate the changes in crack propagation direction on bi-material interface in composite laminate materials. The paper [...]
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This contribution presents a simple numerical model for crack growth under mode-I compressive fatigue loading. Residual tensile stress at the crack tip, which is responsi [...]
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The paper is devoted to fatigue crack propagation in layered materials. The influence of plasticity induced crack closure on threshold values for fatigue crack propagatio [...]
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Presented paper deals with computational fatigue strength prediction of high pressure level steam turbine blade pin joints. Quazi-static FE analysis of one turbine disk s [...]
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To the interpretation of crack growth, it is substantial to estimate the plastic region geometry in front of a crack. Performed here is a study for predicting crack growt [...]
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The influence of corner singularity on crack behaviour for a threedimensional structure is described in this paper. The distribution of stress singularity through the thi [...]
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V příspěvku jsou uvedeny některé výsledky výzkumu MKP modelování šíření únavových trhliny v podmínkách smíšeného módu namáhání. Pro simulování r [...]
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This paper presents a simulation of 3D curved crack propagation in a steam turbine blade lock. These fatigue cracks are often initiated near a blade root contact zone. Tw [...]
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This article shows: 1. Some studies of a low-cycle material fatigue caused by cyclical contact between two spheres with the same diameters. The spheres are made up from m [...]
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The article is a contribution to numerical simulations of pitting arise phenomena on the gear teeth. The basic assumption of the presented simulations was that pitting (p [...]
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A two-parameter fracture mechanics method is applied to small cracks near a stress concentrator. The small crack in the present contribution is considered as crack influe [...]
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