Master’s thesis „Behavioral studies of the timber footbridges structures“ deals with static models of timber footbridges. This thesis mainly consists of the behavioral study of historical timber footbridge in the village of Černvír in Vysočina. Based on the actual design of the bridge a three-dimensional beam model was created. This thesis also includes two contemporary alternatives of timber covered bridges. The individual structural elements were assessed according to the applicable standards. To analyze the model FEM program SCIA Engineer 2012 was used.

The aim of this dissertation is to focus on the systems design of a multi purpose engine tester, a device for diagnostic techniques of self propelled motor vehicles to be used in a car mechanics work shop. The principle aim is to combine a permanently installed PC, a portable laptop and a workshop trolley containing all the necessary assembly tools and accessories. These three pieces used together will serve as a self contained unit within the workshop. I will compare the quality of the devices with others on the market. I will talk about the layout of the individual parts such as the design, structure and shape of the unit, as well as the ergonomics of the designed pieces. An important factor will be reducing the size of the device without compromising the quality and keeping it a similar price to other similar products on the market.

This master`s thesis deals with methods of turbojet engines maintenance and diagnostics. First specify and review methods. Then choose acceptable and perspective methods of non-destructive testing. Based on this choosing will be designed modern service center.

Thesis deals with problems about areas of a non-assembling diagnostics namely resonant adhesive tester according to an EUSAMA methodology. Result of the methodology is a technical condition examination of dampers. However with regard to testing of whole suspension and damping vehicle system are results distorted by influence of testing conditons and another vehical components. Goal of thesis is analysis limits of practical use resonant adhesive tester for a quality checking of mount wheels damping. Problems are solved by a virtual simulation in a program Adams/View where is created a real model of vehical axle of Skoda Roomster TDI 1.4. In the model is consequently simulated possible functional characteristics and abrasions of single components which influence the methodology. Virtual model will be using for research activity of Institute of machine and industrial design Faculty of mechanical ingeneering Brno University of technology.

The work deals with the safety of technological systems and can be divided into two main thematic units. The attention in the first theoretic unit is paid to aspects that affect the safety of technological systems during their technical life. It describes, together with elementary norms and acts solving the products safety, the most important principles for creating and analysing the safety. It clarifies the origin of company’s risk management, part of its quality management, mentions the faults in which products can be found and also describes the failures which have the biggest effect on these faults and of course on the safety too. Attention is further paid to the reliability analysis, as the tool that helps to create the products safety in the pre-manufacturing phase and also to technical diagnostic, as the tool to keep the safety in after-manufacturing phase. The second practical unit arithmetically analyses the safety of two high-voltage transformers. For that it was used the database of real operation numerical values that were gained during diagnostic investigations on these transformers. In addition it describes mentioned diagnostics methods and gives the new procedure for analyse of transformers’ safety by criteria matrix and weighted sum approach. The main contribution of the work can be considered the checkout and the evaluation of this procedure for use in elaboration of high-voltage transformers diagnostic values for analyzing their safety.

Abstract: The diploma thesis is focused on the analysis of reliability and diagnostics of the electric rotary machines originated in industrial energetic practice. There are diagnostic methods in the diploma thesis having been used in practice and analysis of measurement results of the functional measurement on the real electric machines.

The aim of this master´s thesis is to work out a comparison and evaluation of selected methods used for sound field mapping. Thesis will include software tools and results of sample measurement on test object for each mapping method.

This diploma thesis is focused on the implementation of the educational role of the experimental station for measuring the effectiveness of gears. The proposed laboratory task "Experimental measurement of the effectiveness of gears" is intended to familiarize students with the basic principles of gears and especially highlight the issue of the effectiveness of gears. In this presented thesis, it is also suggested the possibility of expanding the educational use of the experimental station. This extension deals with vibration diagnostics of frequencies of gears.

The thesis deals with vibrations caused by geometric defect and fatigue damage of rolling element bearing. Hardware for vibration measurement is tested on 25 new pieces of NJ 304. Second part of the thesis examines if measuring of bearing vibration can help to detect a geometric defect. Geometric defects are detected according to a spectrum of vibration but the results are not absolutely exact. The possibility to detect geometric defects by measuring vibration has not been proven. The end of project tests diagnostic methods for rolling element bearings. The bearing defect was simulated to demonstrate bearing failure frequencies, envelope method and vibration spectrum.

The thesis has focused an influence of actual automotive diagnostic methods which can be used for the evaluation of vehicles´ technical conditions. I´ve sorted various automotive diagnostic methods included the different devices in the first part of thesis. Second part describes the vehicle valuation procedure according to methodology of Czech Experts´ Norm No. I/2005. Third part has introduced the valuation procedures carried by means of diagnostic devices included practical examples. Fourth part compares and evaluates results. Lastly the thesis presents capabilities of technical diagnosis during the vehicle valuation procedure and possible view of both methods.