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Posouzení procesu delaminace lepených materiálů
Matušinec, Luděk
The thesis aims to explore the process of delamination on glued prism. It will be evaluated different types of wood (SM, DB) in combination with heat-treated wood (Thermowood TW). These materials will be exposed in an environment with high humidity. It will also be assessed shear strength test specimens, which will also be exposed to conditions of environment high humidity. Based on the measurement results will be evaluated different types of glue joints. They will vary in type and quantity of glue. The work is consisting of two parts. The first part deals with literature review on glueing of wood, thermal modification of wood and modern glued materials. The second part of the thesis is practical, which will be determined by the methodology of experiment and the subsequent testing. In this thesis will be displayed charts and graphs that will be evaluated at the end of work and commented for practical use in the company.
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Posouzení jakosti lepení po temperovaném uložení ve vodě
Šulák, Radek
Subject of this thesis is to assess the quality, strength and durability of selected types of synthetic adhesives bonded prism EURODECK. As materials were selected native trees oak and beech. The main idea of this work was to determine the properties of glued blocks EURODECK in a moist environment when selecting these species. The work consists of theoretical and practical part. The theoretical part contains basic information and description of the bonded materials. The practical part consists of methodology, conducted the experiment and subsequent performance tests on a tensile tester storage and tempered in water bath. The work contains tables and graphs with measured values.
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Zkoušení pevnosti spoje lamelovaných hranolů pro výrobu oken
Hála, Marek
The first part of the diploma thesis deals with modern glued lamellar prisms for the production of windows, doors and their combination. The procedure of the euro balks production is the essential part of the work. Furthermore, the thesis focuses on the characterization of the wood modification, above all thermally modified wood which is currently used in practice. Moreover, at the present new modified material known as the wood treated by acetylation (Accoya). The practical part deals with the assessment of the bonded lamellar prisms' quality and rigidity. Next examination is devoted to two types of glue (PVAC, PUR).The prisms with two directions of the fibres in the middle layer were tested. The timber from the tangential and semi-radial direction was used for the middle layers. The conclusion if the produced prisms meet the requirements and satisfy the quality class for the window and door production, is included in the discussion.
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