Shenbagabalakrishnan B.,Bharath Niketan Engineering College |
Gayathri V.,Thiagarajar College of Engineering
International Journal of ChemTech Research | Year: 2014
Enhancing hydrogen storage through Nanostructures is one of the thrust area of research today. Among several materials studied, this allotropic form of carbon, namely Carbon Nanotubes (CNTs) proves to be one of the promising system owing to its unique properties like high surface area, porous and high stability to a list few important one. The possibility of hydrogen storage both in the inner and outer surfaces are well investigated by lot of theoretical as well as experimental works. The role of defects, doping and Structural variations of the different Nanomaterial are also analysed and found that some of these strongly affects the storage capacity. But still the DOE target could not be achieved that makes this issue an interesting topic of study. Here, the dependence of the hydrogen binding energy on the bond length and angles of the Nanotubes are analysed. Different types of Nanotubes like metallic and semiconductor with varying structures are considered for this study (1.57 Ȧ length of the C - C bond gives the binding energy value of 0.061eV). Apart from CNTs other contending materials such as Boron nitride are also considered. The adsorption binding energy values (as a function of different orientations of molecule and at different sites of Nanostructures) are compared and the results will be discussed in detail for hydrogen storage applications.
Saravanan M.,Alagappa Chettiar College of Engineering And Technology |
Arulkumar P.V.,Bharath Niketan Engineering College
International Journal of Innovation and Sustainable Development | Year: 2013
This paper compares two familiar optimisation algorithms named Genetic Algorithm (GA) and Simulated Annealing Algorithm (SAA) to find out the best algorithm which is suitable for solving the cellular layout design problems. The objective is to minimise the movement of parts within the cell by appropriate placement of machines. In determining the physical location of work centres, some relative importance factors are considered. The priorities are given for the product, which has more volume and hazardous move and also to minimise back tracking move. Copyright © 2013 Inderscience Enterprises Ltd.
Raj K.P.,Bharath Niketan Engineering College |
Sekaren V.R.,P.A. College
2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings | Year: 2011
The unified power flow controller is the most versatile and complex power electronic equipment that has emerged as the indispensable equipment for the control and optimization of power flow in electrical power transmission system. In this thesis the control of real and reactive power flow through a transmission line with the use of UPFC at the sending end is investigated. Computer simulation using MATLAB Simulink is done and the behavior of the UPFC is studied. In the UPFC based control of transmission line parameter control systems, it is observed that whenever the SSSC sources some real power into the transmission line it is manifested as a voltage drop across the DC link. The fall of the DC link voltage is an indication of real power demand from the receiving end. PI Controllers are used in this work in the control of DC voltage, AC voltage and power transfer. © 2011 IEEE.
Jeevanantham A.K.,Vellore Institute of Technology |
Kannan S.M.,Bharath Niketan Engineering College
ARPN Journal of Engineering and Applied Sciences | Year: 2013
Selective assembly is an economic method to obtain perfect precision assemblies by using the components manufactured with wide tolerance specifications. The mating component's tolerances are divided into equal number of groups. The manufactured components are segregated according to these groups and the components from the corresponding groups are assembled interchangeably in the conventional method. The required clearance can be achieved at this assembly method that is tighter than those achieved at the normal fabrication method with lowest total cost. Still there are more variations in the clearance range. In this paper, a new optimization method is proposed to find the best combination of the selective groups to minimize assembly variation for the complex assemblies. A case example is analyzed for piston, cylinder and piston ring assembly. Fuzzy evolutionary programming (EP) method is used to obtain the best combination of the selective groups to control the assembly variation. Selective assembly is successfully applied for a piston and cylinder assembly using fuzzy EP method to achieve minimum clearance variation without sacrificing the benefit of wider tolerance in manufacturing. © 2006-2013 Asian Research Publishing Network (ARPN).
Rajkumar K.,Bharath Niketan Engineering College |
International Journal of Earth Sciences and Engineering | Year: 2013
Concrete is acknowledged to be a relatively brittle material when subjected to normal stresses and impact loads, where tensile strength is only approximately one tenth of its compressive strength. As a result for these characteristics, concrete member could not support such loads and stresses that usually take place, mainly on concrete beams and slabs. And also Concrete is poor in ductile property. Thus concrete structures subjected to dynamic forces such as earthquakes and blast forces, fail without giving sufficient warning as they are not able to absorb energy. Concrete member reinforced with continuous reinforcing bars to withstand tensile stresses and compensate for the lack of ductility and strength. The introduction of fibers, a new form of binder that could combine with cement matrices was brought in as a solution to develop concrete in view of enhancing its flexural and tensile strength. Fibers are generally used in one of the two forms- short staple randomly dispersed in the cementitious matrix of a bulk structure, or continuous mesh used in thin sheets. In recent years, some attempts to weave synthetic fibers into three-dimensional reinforcements have been made. In addition, fiber-reinforced plastic rods are currently entering the market as replacement of steel bar reinforcements. Beyond cementitious matrix, fiber- reinforced plastics are finding increasing use in the Construction industry. In this paper, an attempt has been made to overcome the problem of brittleness of concrete, by adding polypropylene fibers to the concrete. The performance of the polypropylene fiber reinforced concrete will be investigated experimentally under two point middle third of monotonic load for various types of polypropylene fibers and FRP Wrapping. © 2013 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.