Národní úložiště šedé literatury Nalezeno 6 záznamů.  Hledání trvalo 0.00 vteřin. 
Formulations and constitutive laws for very large strains
Plešek, Jiří
Closing of microcracks under compressive stresses is taken into account in the description of ceramic plasma sprayed materials.
Acoustic emission during necking and plastic elongation of semi-crystalline polymer blends
Převorovský, Zdeněk ; Krofta, Josef ; Blaháček, Michal ; Raab, M.
Tensile tests of polypropylene and its blends with polyethylene and other additives have been recorded by digital camcorder. Acoustic emission (AE) was monitored during tests by two transducers attached to test samples, allowing linear location of AE**ces. Tested materials exhibit large localized plastic deformation - necking - reaching hundreds of percent before failure. Image analysis procedure is designed for quantitative evaluation of axial and lateral strains and strain rates along the sample
Theory of finite deformations and differential geometry
Fiala, Zdeněk
Kinematics of finite deformations is formulated by means ofdifferential geometry to establish one-to-one correspondenceamong objective time derivatives, deformation tensors and stress tensors.
Theory of Finite Deformation and Differential Geometry
Fiala, Zdeněk
This overview contribution uses the basic notions of differentialy geometry in the theory of finite deformations, what enables in a natural way to assighn to most strain tensors corresponding stress tensors and objective timederivatives and simply classify these triplets.
Elastic nonlinearity due to microcracks in thermally sprayed materials
Kroupa, František ; Plešek, Jiří
Thermal spraying is a process in which the material in a powder form (with particle size between 20 and 150ćm) is melted, accelerated to a high velocity (20m/s up to 600m/s) and deposited on the substrate.The microstructure of sprayed materials is complex. It consists of irregular thin lamellae known as "splats", formed by rapid solidification of the impacted molten droplets.

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