The diploma thesis The significance of nondestructive testing in the area of evaluation of the welds quality during the process is focused on the area of creating a material weld joint that cannot be disassembled. In the theoretical part the area of fusion welding, methods of fusion welding and defects of weld joints are analysed. Assessment of current practice of verification of the weld joint quality using nondestructive testing is analysed, too. In the experimental part of the diploma thesis progressive examination for assessing the weld joint quality is suggested from the view of making an expert as-sessment. The suggested method of evaluating the making of welds is also verified in an experimental way and the gained results of the performed measurement are compared with the existing method of determining the weld quality. In the final part of the diploma thesis economical assessment of the benefit of the suggested method and its incorporation into the qualification of an expert engineer is carried out.

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This thesis deals with the analysis of the root system and is focused on its mechanic or more precisely fixation function. The point of concern is non-destructive testing which is used in practical arboriculture for assessment of tree resistance against uprooting. The thesis analyses this method using the actual testing and data processing. New pieces of knowledge are brought out in this thesis. It provides an alternative for data processing and discusses the possible usage of the information obtained during of the investigations of tree resistance against uprooting.

The aim of the thesis is making the design process for the production of parts for the aerospace industry by bending. Forming technology is the perspective of manufacturing technology, what has frequent use in the aerospace industry. Part of this thesis is the experimental finding of maximum possible ram speed on press brake machine during bending of small radius to prevent cracking. Bending was performed on the press brake and possible cracks of the material were check by capillary fluorescence testing. These knowledge were applied in the design process for the manufacturing of parts and there was provided economic evaluation.

The purpose of the thesis is to analyse current documentation situaton and organization steps based on norms and other requirements for accreditation, suggested precaution and documentation to meet requirements and create quality manual to get accreditation.

Diploma thesis analyses low-speed flow measurement. Thesis consist of 4 chapters. First chapter is about liquids and its attributes, flow meters, especially induction flow meter, which is very important for designed sensor. In second chapter is detailed process of designing sensor. Description of realization and measurement of flow is in the third chapter. Result summary is in conclusion.

This paper examines the influence of processing on the acoustic properties of the wooden beams. Hewn beams and sawn beams were examined. Hewn beams were divided into three groups at two moisture content levels. Timber properties were determined by measuring the resonant frequencies. First part of the text is focused on the oscillatory motion and behavior of vibrating solids. Furthermore, there is a description of acoustic properties of wood and the possibility of using these properties when determining the mechanical properties. The next chapter is devoted to non-destructive testing of wood, which often uses acoustic methods.

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Pneumatic drives are an integral part of many machinery, with high demands on their reliability. Unfortunately, they sometimes fail, either due to improper production or assembly at the factory or by gradual degradation of moving parts and sealing elements during operation. Current diagnostic methods do not allow localization or identification of the type of damage and do not allow the operator to make a qualified decision. This work deals with the use of acoustic emission for these purposes. On PB type cylinders manufactured by Poličské strojírny a.s., a methodology is introduced which leads to the direct identification or at least localization of selected defects. By implementing this methodology in the final inspection of the production plant, the percentage of exposed pieces of waste will be increased, thus preventing accidents of these faulty pieces during operation.