Physical Sciences and Engineering

The current work contains the load cases and boundary conditions for the stress analysis of chassis using finite element analysis over ANSYS. Shell elements have been used for the longitudinal members & cross members of the chassis. The advantage of using shell element is that the stress details can be obtained over the subsections of the chassis as well as over the complete section of the chassis. Beam elements have been used to simulate various attachments over the chassis, like fuel tank mountings, engine mountings, etc.

The upgoing trend of research on joining of dissimilar alloys grown the interest on the study and analysis of Friction Stir welding. Joining of different steel groups and Aluminium has been on the research interest on the previous decade. Recent innovative research and development areas is on with Magnesium alloy groups. The Aluminium alloys and Magnesium alloys are investigated for the weld strength with respect to the change of welding parameters including tool geometry, the tool transverse speed, and the tool angular velocity.

A numerical model is developed to predict the material deformations and temperature histories in the friction stir welding (FSW) process. Based on the numerical ananlysis, the effects of the welding parameters on material deformation and temperatures are investigated for plain cylindrical and drill tool geometries. A numerical result predicts that the temperature can be increased with the increase of the rotating speed on the FSW process. In the same way the increase in the weld speed can also lead to the tangible increase of the input power.

This study aimed at finding out the perceptions of secondary school mathematics teachers who had attended in-service training under Secondary Science Mathematics Teachers’ programme. A mixed methods approach was used in this study and data was collected using a survey questionnaire and focus group discussion. Findings from this study indicate that most teachers perceive the programme to have positively impacted on their teaching skills i.e. towards the implementation of the main objectives of SESMAT in-service training.

This paper describes the evaluation of the wave profile of submarine at surface condition and deck flooding which occurred by the wave making pattern at the bow. Movement of ships and submarines on the free surface of calm water creates the surface wave. Because of the difference in the bow shape and freeboard height, the wave making system in ships and submarines is different. Rounded or elliptical bow shape of submarines generates a high bow wave which causes deck and bow wetness. This is because of the fact that, in submarines this situation arises a small freeboard.

At present, bad debt has become a stubborn enemy of financial industry in every country. So there arises a need of a technique which will identify the risk in loan approval. Fuzzy logic is a computing model which deals with uncertainty rather than the traditional True (1) and False (0) values and has caught some eyes in recent years. Fuzzy logic is a valid and novel means of problem solving with intelligent systems which deals with imprecision, vagueness and uncertainty in the financial applications like loan processing.

In today’s world the technology which is made wireless communication easier is Bluetooth technology which is used for transferring data in short range. People who are looking to gain information in an unauthorized manner is viewed very closely to any new improvement or invention.

In the recent years utilization of polymeric materials increased due to their good mechanical properties and easy manufacturing. Starting from automotive industry up to food industry polymeric materials are used for obtaining components by molding or by machining. Taking into account the wide range of applications, it is important to know the mechanical behavior of the materials in different loading conditions. Rapid Prototyping Techniques (RPT) are widely used to produce objects with good dimensional accuracy, surface roughness and material strength by adding the material layer by layer.

Vehicular ad hoc networks (VANETs) are a special form of wireless networks made by vehicles communicating among themselves on roads which includes communications among vehicles and between vehicles and road side units. However, due to the high mobility and the frequent changes of the network topology, the communication links are highly vulnerable to disconnection in VANETs. This paper extend the well-known ad hoc on-demand distance vector (AODV) routing protocol with evolving graph theory to propose reliable routing protocol EG-RAODV.

The objective of this study measured the level of satisfaction of festival participants through the festival visitors’ consideration. In other words, this study wanted to find out how the visitors’ considerable factors from the festival participation affect the satisfaction. This study was performed during the festival period (for 24days starting April 24, 2015) in order to analysis about the participational visitors’ motivation and satisfaction of Gwangju Royal Ceramics Festival.