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    Three-Point Bending Response of Corrugated Core Metallic Sandwich Panels Having Different Core Configurations – An Experimental Study
    (Dr D. Pylarinos, 2019) Zurnaci, E.; Nalbant, M.; Gokkaya, H.; Sur, G.
    Bending response of corrugated core metallic sandwich panels was studied experimentally under three-point bending loading. Two different core configurations were used: the corrugated monolithic core and the corrugated sliced core. The trapezoidal corrugated cores were manufactured from aluminum sheets via a sheet metal bending mould. After the sandwich panel samples were prepared, they were subjected to three-point bending tests. The load and displacement responses of the sandwich panels having different core configurations were obtained from the experimental testing. The influence of the core configuration on the three-point bending response and failure modes was then investigated. The experimental results revealed that the corrugated sliced core configuration exhibited an improved bending performance compared to the corrugated monolithic core configuration. © 2019, Dr D. Pylarinos. All rights reserved.
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    Turning of (Cu-Cr-Zr) alloy with abrasive water jet
    (2012) Kartal, F.; Gokkaya, H.; Nalbant, M.
    In this research, the effect of the processing parameters on surface roughness during the turning of (Cu-Cr-Zr) alloy with abrasive water jet was studied. In the experimental studies, (Cu-Cr-Zr) alloy, ?30 and 240 mm in size, was processed with abrasive water. In the experiment, pump pressure was 350 MPa, in the form of garnet abrasive and 80 mesh in size and nozzle diameter were kept constant at 1.2 mm. In addition to that in the parameters of nozzle feed rates (10, 15, 20 and 25 mm/min), abrasive flow rates (50, 150, 250 and 350 gr/min) and nozzle distances (2, 5, 8, 11 mm) were used in the tests. According to the results of the experiment, the increase in nozzle feed rate and nozzle distance lead to increase in average surface roughness. On the other hand, the increase in the number of turning speed and abrasive flow rate lead to decrease in average surface roughness. Average surface roughness was measured between 2.5 and 5.5 ?m. © BHR Group 2012 Water Jetting 21.