20.500.12556/RUL-149000 Zasnova in eksperimentalna karakterizacija togosti sestavljenih plošč z valovito sredico Conceptual design and experimental analysis of composite plates with wavy core Sestavljene plošče z valovito sredico se zaradi velikega razmerja med nosilnostjo in težo, majhne porabe gradiva in posledično nižje cene vse več uporabljajo v številnih inženirskih aplikacijah. V tem delu smo zasnovali plošče s trikotno, trapezno in sinusno obliko jedra, izdelanih iz papirja večje gostote. Pri vsaki različici sendvič plošče smo spreminjali amplitudo in valovno dolžino jedra. Zasnovali smo merilno mesto, kjer smo izvedli eksperimentalno karakterizacijo upogibne togosti s pomočjo tri točkovnega upogiba. Ugotovili smo, da imajo med izdelanimi sendvič ploščami največjo upogibno togost plošče s trikotno in trapezno obliko jedra ter raziskali različne načine deformacij pri posamezni obliki jedra. Composite panels with a corrugated core are increasingly being used in numerous engineering applications due to their high strength-to-weight ratio, low material consumption and consequently, lower cost. In this thesis, we designed panels with triangular, trapezoidal, and sinusoidal core shapes, all made from higher density paper. For each sample of the sandwich panel, we varied the amplitude and wavelength of the core. We designed a three-point bending setup for the use in a universal mechanical testing machine for an experimental characterization of the bending stiffness. We have found that sandwich panels with triangular and trapezoidal core shapes have the highest bending stiffness among the fabricated ones and explored different deformation modes for each core shape. sendvič plošče z valovito sredico tri točkovni upogib trikotno sinusno in trapezno jedro upogibna togost eksperimentalna analiza corrugated sandwich panels three point bending triangular sinusoidal and trapezoidal cores bending stiffness experimental analysis true false false [A. Kruh] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2023-09-02 08:32:59 2023-09-02 08:33:00 2023-09-21 13:30:55 0000-00-00 00:00:00 2023 0 Ljubljana 0 XX, 43 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.175.22:624.073:624.046.4(043.2) 255656 165265155 29605.pdf 29605.pdf 1 AE6AB97BCE78F6C363D01AF4FCDC6DE5 8d57b49843ccdce126289028e4d9253a85f6da8254acb46b64e760fcfe4a0105 8e63cb1f-495a-11ee-af86-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=173382 Fakulteta za strojništvo 0 0 0