Concrete reinforcement steel bar when it began ordering from manufacturers and further functionalized into the building structure experience bending process. Environmental conditions also affected to the physical and mechanical conditions of the reinforcement steel bar. Many varieties of corrosion environmental condition that was given, then the peat water scope was selected as a characteristic geographical condition in Riau Province. The research methodology was on experimental research. Concrete reinforcement steel bar was bent on angle (α) 20o, 40o, 60o, 80o, 100o, 120o, 140o, 160o, and 180o. It was soaking in the peat water and then the specimens is straightened for tensile test. The average tensile strength of concrete reinforcing steel structures increased variety depend on the angle of bending. The highest increasing in yield strength was on bending angle (α) of 180° at precentage 18.01% with an average value of 587.1286 MPa. The highest increasing of maximum tensile strength was on bending angle (α) of 180° at precentage 4.76% with an average value of 676.8660 MPa. The lowest elongation was on bending angle (α) of 180 ° with an average value of 6.67%.
Department of Mechanical Engineering, Universitas Riau, Pekanbaru, 28293, Indonesia
This paper reviewed the capability of the proposed programming coded based on diffraction potential theory to predict a ship shape floating structure’s motion response.This paper briefly presents the procedure to apply the diffraction potential theory to simulate the ship shape floating structure’s motion response. As case study, the proposed programming code was applied to prediction motion responses of ship shape floating structure in surging, heaving, pitching, swaying, rolling and yawing directions.Results of simulation were compared with ANSYS AQWA software as bench mark. It found that the simulation results by the proposed programming code are similar with the ANSYS one.
Department of Aeronautics, Automotive and Ocean Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia
Ocean and Aerospace Research Institute, Indonesia
Department of Transportation and Environmental Systems, Hiroshima University, Japan
National Research Institute of Fisheries Engineering (NRIFE), Japan
Aneurysm is one of the problems occurs in blood flow phenomena. Researchers have been interested in the flow inside the aneurysm and many numerical and experimental results have been produced. This study focuses on the effect of variable viscosity on the blood flow behavior. The study shows that as the viscosity decreased, the pressure is increased for both Newtonian and non-Newtonian conditions. Besides that, the peak pressure for low viscosity is much higher compared to the peak pressure for high viscosity which the possibility of the aneurysm to rupture valid for low viscosity blood conditions. As for the normal blood pressure and high blood pressure, the peak pressure inside the aneurysm increase as high as 90%, which become another factor of the aneurysm to rupture. Apart from all the results above, there are no significance differences for both Newtonian and non-Newtonian case. This paper predicts the possibility of aneurysm rupture in hyperthermia patient.
Faculty of Mechanical Engineering, UniversitiTeknologi Malaysia, 81310, Skudai, Johor, Malaysia
Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
Flow Analysis, Simulation and Turbulence Focus Group, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, BatuPahat, Johor, Malaysia