International Research Journal on Advanced Science Hub

In recent material removal process, Conventional machining like drilling, milling, grinding etc can be replaced by Non traditional machining because of high surface finish, Minimum tool wear and excellent dimensional accuracy. Particularly for machining high hardened materials like ceramic, composites and super alloys Electrical discharge Machining (EDM) process is preferred. In this paper an attempt is made to machining of Aluminium nano composites. It is fabricated by melting Aluminium alloy 6061in a crucible and stirred the preheating Multiwall carbon nanotubes (MWCNT) with different Wt% using stir casting technique. Now 16 Experiments with varying three input parameters Current, Pulse On and Pulse Off having four level of factors were conducted. The output parameters can be measured by Surface Roughness value (SR), Material Removal rate (MRR) and Tool wear rate (TWR). From the Taguchi analysis, it is determined that MRR, TWR and SR gives good results when using copper electrode for machining of aluminum nano composite.

Wind is used from a very long time as a source of electricity. Lots of efforts have been made to develop the horizontal axis wind turbines but vertical axis wind turbines did not get much attention over the past couple of decades. In the current era of energy crisis it has acquired more significance. Blade is the most important component of a wind turbine which controls a wind turbine 's performance and the design of other components that are attached to it. Current work introduces a concept for the design of a twisted unsymmetrical blade for a small-scale vertical axis wind turbine with beam theories for analytical modeling and a commercial program MSC NASTRAN, PATRAN for numerical modeling. The design parameters of the blade such as solidity, aspect ratio, pressure coefficient etc. are calculated with the goal of the 1 kW power output and the blade design was tested under extreme wind conditions where maximum deflection and bending stress values were calculated at peak aerodynamic and centrifugal forces values. Mainly the design considered achieving the structural strength i.e. reduction of deflections and bending stresses. This blade design has high strength and lower material consumption to achieve the low cost of complete wind turbine rotor assembly which actually covers over 50 percent of total wind turbine costs.

Micro Air Vehicle (MAV) is the current research and development work worldwide. This work describes the design and optimization method of Micro Air Vehicles. Here the optimization method to minimize the vehicle size, the objective function for this optimization problem, for the set of design variables is found from the aerodynamic analysis. This aerodynamic analysis is mainly based on the results obtained from the wind tunnel. Optimization for improving the endurance is explained in the similar way as the optimization problem of minimizing the size of the vehicle with the slight change in the objective function.

Sustainable tourism promotes environment and take into account socio-cultural aspects by planning and management of tourism. Sustainable development is based on three pillars such as economic development, environmental protection and social development. This concept assumes properly and consciously shaped relationship between the pillars, which are intended to ensure intra- and intergenerational economic, environmental and social balance (Meyer, Milewski, 2009, p. 84).Sustainable tourism is eco-tourism defined by the international eco-tourism society as the responsible travel to natural areas that preserve the environmental and sustain the local people welfare. The objective of the study is to examine the differences in Tourists behaviour towards sustainable tourism across demographics. To draw implications and suggestions from the finding of the study. The data is collected both with help of primary and secondary.