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Modelling and testing smart aileron servo tabs : developing simulation tools for smart materialsMsomi, Velaphi January 2015 (has links)
Thesis (DTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2015. / This dissertation addresses the development and the testing of a simulation tool to be used to predict the behaviour of smart material/structures. Along with the development of the simulation tool, a new form of the model describing the behaviour of shape-memory alloy was developed and implemented. The proposed model was developed based on the existing cosine model, conventionally used in literature, but it uses hyperbolic tangent functions. The hyperbolic tangent function was chosen so as to allow the simulation of any range of temperatures. Experiments were performed to obtain the parameters to be used in the simulation and to validate the numerical results. Two different simulations were performed: a one dimensional FEA analysis with a two dimensional orientation (NiTi SMA wire simulation) and a three dimensional FEA analysis (NiTi SMA plate) [Msomi and Oliver, 2015]. Alongside the FEA analysis, two experiments were performed with the purpose of obtaining the material parameters to be used in FEA analysis and to compare the FEA results to the experimental results. / Airbus Company
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Design de superfícies : a costura industrial como recurso criativo em produtos do vestuário /Abreu, Ana Cláudia de January 2020 (has links)
Orientador: Marizilda dos Santos Menezes / Resumo: Na produção de produtos de vestuário, a costura industrial é empregada nas superfícies têxteis como elemento de materialização, ou seja, a união de duas ou mais camadas de tecidos por meio de pontos de costura que resultam em um produto tridimensional. Neste âmbito, a pesquisa buscou explorar seu aspecto criativo em superfícies de vestuário, ancorados nos fundamentos e procedimentos do Design de Superfícies, para gerar superfícies inovadoras com aspectos representacionais, projetuais e relacionais. Para tanto, foram elaboradas etapas, as quais caracterizam como uma investigação exploratória, com aplicações de experimentos por meio de quatro técnicas de costura industrial em materiais têxteis. Como resultado, foram elencadas diretrizes que possam orientar o Designer de Moda a desenvolver superfícies de vestuários baseadas nos Fundamentos do Design de Superfícies, nos aspectos técnicos da costura industrial e nas características dos materiais têxteis / Abstract: In the production of clothing products, the industrial sewing is used on textiles surfaces as an element of materialization, that is, the joining two or more layers of fabric using sewing stitches that result in a three-dimensional product. In this contexto, the research sought to explore its creative aspecto n clothes surfaces, bases on the fundamentalsand procedures of Surfaces Design to generate innovative surfaces with representational, projectual and relation aspects. Therefore, steps were elaborated, characterized as na exploratory investigation, with applications of experiments by means of four industrial sewing techniques in textile materials. As a result, guidelines were elaborated that can guide the Fashion Designer to develop clothing surfaces based on the Fundamentals of Surfaces Design, the technical aspects of industrial sewing and the characteristic of textile materials / Mestre
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Navrhování nízkohlučných asfaltových směsí / Design of low-noise asphalt mixturesŘehulka, Martin January 2020 (has links)
The Master’s thesis is focused on low-noise asphalt mixtures in general, namely asphalt concrete for very thin layers with low noise (BBTM 8 NH) and stone mastic asphalt with low noise (SMA 8 NH). The first half of the thesis describes basic types of asphalt mixtures with low noise, requirements for raw materials (aggregates and asphalt), noise emissions and their measurement methods. The second part deals the design of BBTM 8 NH and SMA 8 NH so that they have the same voids. Subsequently, their parameters were tested. Acoustic absorption, resistence against permanent deformation and stiffness. Test methods are described and evaluated.
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