Browsing by Subject "Numerical and experimental study"

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    Magnetic-Thermal Analysis and Rapid Consolidation of FE–3 wt.% CU Powder Metal Compacts Sintered by Medium-Frequency Induction-Heated System
    (Springer Science and Business Media, LLC, 2014) Cavdar U.; Atik E.; Akgul M.B.
    In this paper, the results of numerical and experimental studies concerning the effect of mediumfrequency induction sintering of Fe–3 wt.% Cu powder metal (PM) compacts are discussed. Several sintering durations from 30 to 180 sec are studied. The mixed powders are compacted at 600 MPa and sintered by medium-frequency induction system (30–50 kHz frequency and 12 kW power). Magnetic and thermal analysis, mechanical properties, and densities of copper–iron PM compacts are presented. © 2014, Springer Science+Business Media New York.
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    The effect of foam properties on vibration response of curved sandwich composite panels
    (Elsevier Ltd, 2018) Yurddaskal M.; Ozmen U.; Kir M.; Okutan Baba B.
    In this study, a numerical and experimental study was carried out to determine the effects of variables such as curvature and foam properties on the natural frequencies of the sandwich panels. Sandwich panels consist of laminated E/glass epoxy face sheets with [0°/90°/−45°/+45°] stacking sequences and PVC foam cores with AIREX C70.55, C70.90, C70.200 and C70.250. A group of sandwich panels with radii of curvature ranging from 90 to 200 mm were analysed by ANSYS software. Vibration characteristics were obtained for clamped square sandwich panels. The results indicate that the natural frequencies increase with the increasing curvature and foam density. However, the increment in the natural frequency due to an increase in the magnitude of curvature decreases with increasing foam density. The highest increase in natural frequency due to increasing foam properties is seen in the flat panels. Also, it is found that in values beyond a specific curvature; increasing of the foam properties causes reduction in the natural frequencies. © 2017 Elsevier Ltd