National Repository of Grey Literature 32 records found  previous11 - 20nextend  jump to record: Search took 0.00 seconds. 
An overview of industrial oils
Ondrouch, Dušan ; Ficza, Ildikó (referee) ; Šperka, Petr (advisor)
Methods of production of base oils and their branching are described in the introduction of the thesis. Essential properties, which are the prime aspect of diversification of particular oils, are described in the following part. Commonly used additives, which adjust properties of base oils, are outlined thereafter. The last part of the thesis deals with industrial applications and requirements, which are set for particular application.
Mathematical model of EHD lubricated line contact
Sabová, Iveta ; Tomášek, Petr (referee) ; Ficza, Ildikó (advisor)
The thesis deals with the solution of the mathematical model of elastohydrodynamically lubricated line contact. The main aim is to develop and create a programme, which would show the pressure and the film thickness distribution in a line contact. The source code programmed in MATLAB is also included.
Mathematical model of solar drying of sewage sludge
Ficza, Ildikó ; Houdková, Lucie (referee) ; Hájek, Jiří (advisor)
Solární sušení je mimo jiné energeticky nenáročná a tudíž vysoce ekologická cesta pro zpracování kalů z malých čistíren odpadních vod. Výsledkem tohoto procesu je produkt, který je velmi dobře použitelný v zemědělství jako přírodní hnojivo. V rámci této práce bude sestaven zjednodušený dynamický model sušení vrstvy kalu s jednou prostorovou souřadnicí. Tento model bude diskretizován pomocí vhodné numerické metody a bude provedena jeho implementace do výpočtového programu v prostředí MATLAB.
Using of experimental apparatus Mini Traction Machine for study of frictional properties of lubricated and unlubricated contacts
Wilhelm, Pavel ; Ficza, Ildikó (referee) ; Vrbka, Martin (advisor)
This bachelor thesis focuses on description of Mini-Traction Machine test rig. After the theoretical introduction to Tribology is first generally described the principle of measuring on the Mini-Traction Machine and then are described the individual accessories. Consequently the results of main experiments where Mini-Traction Machine test rig was used from all over the world are summarized. Individual experiments show the possibilities of applying Mini-Traction Machine when measuring the material tribological characteristics.
Design and development of tasks in the field of image processing in Matlab software
Cupra, Šimon ; Ficza, Ildikó (referee) ; Zatočilová, Aneta (advisor)
Bachelor thesis deals with problematics of image processing using MATLAB software and design of two sample tasks. For better understanding of the problematics basic information about picture and its digital representation is given. Based on two sample tasks and its solution, basic principles of image processing are outlined and capabilities of MATLABs Image processing toolbox are introduced.
A review of hip joint replacements in terms of wear
Vaverka, Pavel ; Ficza, Ildikó (referee) ; Nečas, David (advisor)
This bachelor thesis provides an overview of influence of materials, diametral clearance and head diameter on wear of total hip replacement. First part of the thesis deals evolution of hip joint replacements. Wear measurement methods and commercially available hip joint simulators are described in the following chapter. The main part of this thesis is analysis of important studies dealing with influence of hip replacement design on volumetric wear.
Review of grease types
Mauer, Jindřich ; Ficza, Ildikó (referee) ; Košťál, David (advisor)
This bachelor thesis provides a basic distribution of greases according various aspects, which are used for lubrication the various components. The first part of bachelor thesis deals with the composition of greases. The following section describes the manufacture of greases. Another section includes the distribution of greases in terms of their composition. The following section is about distribution of greases in terms of practical use. The last part of the bachelor thesis deals with transmission electron microscopy, by this method is possible to examine the structure of greases.
A review of hip joint replacements in terms of wear
Vaverka, Pavel ; Ficza, Ildikó (referee) ; Nečas, David (advisor)
This bachelor thesis provides an overview of influence of materials, diametral clearance and head diameter on wear of total hip replacement. First part of the thesis deals evolution of hip joint replacements. Wear measurement methods and commercially available hip joint simulators are described in the following chapter. The main part of this thesis is analysis of important studies dealing with influence of hip replacement design on volumetric wear.
Review of the options and methods of manufacture polyethylene acetabular cups artificial hip joint
Klus, Patrik ; Ficza, Ildikó (referee) ; Ranuša, Matúš (advisor)
The bachelor‘s thesis gives a complex review of options and methods for manufacturing polyethylene acetabular liners in artificial joint hips. It describes the development process of polyethylene from the early 70s to nowadays. Several manufacturing techniques of polyethylene liners and their effect on the wear resistance are also listed. The final part of the thesis focuses on older and modern evaluation methods of linear or volumetric wear rate of polyethylene liners.
Effects of Non-Newtonian Lubricants on Surface Roughness in Point Contacts
Ficza, Ildikó ; Kaneta, Motohiro (referee) ; Poll, Gerhard (referee) ; Hartl, Martin (advisor)
Tato dizertační práce je zaměřena na studium deformace nerovnosti uvnitř elastohydrodynamicky mazaného (EHD) kruhového kontaktu. Práce se zabývá studiem přechodu příčné nerovnosti přes kontaktní oblast, která je modelována pomocí numerických metod. Model dále uvažuje nenewtonské chování maziva. Použitý matematický model se skládá z parciální diferenciální rovnice druhého řádu pro řešení tlaku a integro-diferenciální rovnice pro řešení elastických deformací. Pro řešení tohoto modelu je použitá takzvaná multigrid (vícesíťová) metoda. Práce obsahuje popis matematického modelu EHD kontaktu a aplikované numeriké metody. Výsledky simulací jsou porovnány s experimentálně stanovenýma hodnotama tloušťky mazacího filmu. Deformace nerovnosti uvnitř kontaktní oblasti je studována pro různé provozní podmínky (střední rychlost, poměr proklzu) a různá vlastnosti maziva.

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