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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Snímání deformací dřeva s vysokou vlhkostí a výskytem vad pomocí metody DIC
 Piňos, Pavel
The diploma thesis is fucused on scanning deformations of wood which has high value of humidity and defects in its structure. The experiment was carried out on standard trial corpuscles. Beech, oak and poplar were chosen as experimental timber species. The influence of high humidity and defects on mechanic qualities and deformations on this tiber species was examined and studied. The aim of thesis is to find out mutual difference and compare the results between defornations measured by standardly used conventional methods and contactless digital image correlation (DIC) and also verify of application of this optical method. The thesis includes also numerical model.
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Testing of wood with structure disturbed by defects and wood-destroying pests focusing on destructive tests of mechanical properties and wood protection
 REJŽEK, Lukáš
The theoretical part summarizes pieces of knowledge about the most common defects and wood pests including their impact on the properties of the material. The following practical part describes the destructive testing of wood - its course, calculation and evaluation of results. The final section is devoted to the structural and chemical wood protection. There are introduced basic principles and methods of protection and in the last chapter there are some examples of companies in our region that performs chemical protection.
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Skladování dříví po kalamitních těžbách
 Solař, Aleš
The dissertation deals with the verification of the foil storage method influence on wood quality. This method was not explored in our conditions. The dissertation analyzes and specifies the different types of defects that occur during storage, and assesses their impact on the defects during quality of the stored wood during the several years storage period. Based on this assessment reveals the development of individual storage, which cause changes in quality. It explains the causes of quality changes depending on the methods and storage conditions. It sets out the conditions the suitability of the method of storage of raw materials under the foil and specifies the steps in the implementation of this method. The domestic condition is the second area on which work is oriented. They are of use in determining the change in each grade wood assessed under recommended conditions for the measurement and classification of wood in the Czech Republic 2008. The results of this work are significant not just for next research in this field but results can be use directly in practice. The work also includes evaluation of the economic. According to its outcome can be assessed the profitability of this way of storage and protection of wood in real conditions.
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Defects and pests of wood
 REJŽEK, Lukáš
This bachelor thesis describes defects in wood and wood-decaying biological pests. For wood defects are explained causes of formation and their impact on the workability and usability of the material. The chapters on insects and wood-rotting fungi are mentioned the most important kinds of pests, their development in the wood, the level of damage and marginally possibilities of prevention or pest control. The text is accompanied by pictures. A two-part presentation serves for practical use in teaching at primary and secondary schools. The work also includes a collection of defects in wood and wood-boring insect grub holes.
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