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Cery, Jan
Abstrakt: V příspěvku jsou studovány zákonitosti při šíření harmonické elastické vlny v kubickém prostředí. Nejprve jsou odvozeny vztahy pro fázové rychl [...]
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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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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 concept of $J_R$ curves is well established in structure assessment. However, the shape of $J_R$ curves is influenced by constraint e ects significantly. Such phenome [...]
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One of the main modes of bed load transport is saltation when particles hop up from the bed and follow ballistic-like trajectories. Mathematical models of saltation are m [...]
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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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Under the assumptions of linear elastic fracture mechanics the behaviour of cracks and general singular stress concentrators is studied and compared. The stress distribu [...]
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This paper presents the optical Digital Image Correlation method for in-plane displacement field measurements. This method is based on tracing random structures, which ar [...]
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Gronát, P.
In this paper, a correlation method for direct vorticity computation of the fluid velocity field is introduced. The correlation method allows an affine transformation of [...]
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In mining regions a great hazard for masonry and concrete residential buildings are semiseismic earth tremors, which potential energy could achieved 1010 [J]. Only non-cr [...]
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Abstrakt: V práci jsou uvedeny vztahy pro měřeni druhé viskozity málo stlačitelných tekutin, pro které platí $\rho(x,t)=\rho_0+\tilde{\rho}(x,t),\tilde{\rho}=\rh [...]
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13.
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Zacharopoulou, G.
In conservation practice it is usually observed that the capability of upgrading the characteristics of a lime through maturation appears to be limited due to a self-dryi [...]
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This work belongs to the sphere of computer vision. It deals with the human sperm analysis. The sterility of the current pairs is caused by the man in more than thirty pe [...]
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The aim of the study was to present influence of the three-dimensional spacing of the bone implants to the stability of bone fracture fixing in biplane external stabilize [...]
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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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This paper is focused on fracture energy which belongs to the basic fracture-mechanical characteristics of quasi-brittle materials. This parameter is explored here from t [...]
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Abstrakt: Při stanovováni lomových charakteristik betonu a dalších cementových kompozitů je využívána zkouška tříbodovým ohybem trámců se zářezem. Efekt [...]
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19.
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Holka, H.
The aim of the present research was to investigate the method of identifying the function of rotary vibration of the object in plane motion. The body motion was defined i [...]
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The subject of this work is experimental observation of the development of internal damage and its evolution in aluminium alloy flat specimens with different configuratio [...]
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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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Abstrakt: Finite element analysis was attempted to modeling microcracks and overall response of solid composites (two-dimensional problem) under compression. As a mathema [...]
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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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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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V příspěvku jsou uvedeny některé výsledky výzkumu MKP modelování šíření únavových trhliny v podmínkách smíšeného módu namáhání. Pro simulování r [...]
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The basic fracture properties of cement-based composite are ascertained on the basis of test evaluations of the specimens in suitable test configurations. Three-point ben [...]
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Abstrakt: The integral concepts for calculation of the generalized stress intensity factor and elastic T stress are presented. Both the integrals are based on a validity [...]
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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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This paper presents the consideration on the change judgement of J integral and Q parameter as the base parameters of two-parameter elastic-plastic fracture mechanics. An [...]
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Three point bending test of central notched specimen is used for determination of fracture properties of concrete, mortar and hardened cement paste. The properties – e. [...]
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Paper is focused on comprehensive solution of probabilistic integrity assessment of pressure vessels. Engineering criteria was fully respected during solution, however fr [...]
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33.
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Naď, M.
The existence of a crack in a structural member introduces local modification of flexibility and consequently affects the dynamic behaviour of the cracked member. In this [...]
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Selected experimental results from static loading tests of pre-tensioned railway sleepers and results of numerical simulations of the test are presented in this paper. Th [...]
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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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36.
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Abstrakt: Relations between crack opening displacement (CTOD) and other fracture mechanics parameters are of a great importance in fracture mechanics. The basic aim of t [...]
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