VS. Amaresh, P. Saravanan, Prof. L. Ramesh, M. Madhusudhana Raju
The rising electricity demand in our country did not match the generation and the shortage percentage according to 2013 is 17.3%. Our government is basically behind the generation part but the conservation is also very important to save electrical energy. In connection with that our team working towards to save energy through the initiative named IET Vision 10MW, which was inaugurated in our university to reduce 10MW generation in 10years. To achieve the goal our team initial work is to conduct electrical energy audit for a residential house in Chennai. After several analyses suitable recommendation will be provided to the house for saving energy. We also suggested the recommendation to house for implementing suitable DG for effective savings of electrical unit consumed. Our team is planning for a big project by completing 25houses, 2industries, and 2commercial buildings.
The springbok is a phenomenon that occurs in many cold working processes. When a metal is deformed into the plastic region, the total strain is made up of two parts, the elastic part and the plastic part, when removing the deformation load, a stress reduction will occur and accordingly the total strain will decrease by the amount of the elastic part, which results in springback. Springback can be minimized by means of die design; however, it cannot be eliminated completely. The solution yields improved dimensional consistency, tighter size and tolerances, improved quality, straightness and machinability, productivity, formability, longer tool life resulting cost effectiveness. Determination of springback by means of trial and error technique not only increases the cost of manufacture and repair of tool, but also a waste of time causing delay in the development of the product. This paper is the literature review of cold drawing process and springback, influence of process parameters and methodology to minimize springback.
Low density Polyethylene (LDPE) is commercially popular polymer having low cost, corrosion free, readily available and light weight. The semicrystalline polymer LDPE is important as it has good mechanical property including modulus and strength. LDPE composite have been prepared using conducting polymer (polyaniline) as a filler. The polyaniline is first synthesized using chemical polymerization method. The powder of polyaniline having particle size of 10-15 micron is used as filler in LDPE. The various concentration of polyaniline powder (0.5%, 1%, 4%,6%and 10% w/w) have been used as a fiiler in LDPE to form LDPE composite. The samples have been prepared in the form of disc having thickness of 1mm, using hot press molder. Mechanical properties [load at break, % strain at break, stress at break and Young’s Modulus] of polyaniline filed LDPE composite have been measured using Instron Tensile Tester (4467). The Results indicate that there is overall improvement in mechanical properties of these composite. The % strain at break, load at break are found to be maximum for 1% polyaniline filled LDPE. The result is explained on the basis of crystallinity index (from XRD), structure of host polymer and filler.
Amol Bhanage, Sudhir More, S. V. Chaitanya, Rajat Patil
In this paper, the measures were investigate to optimize the process parameters of EDM machine like General Parameter Variable, Standard Spark Gap, Electrode material, Flushing and suctioning to enhance the Material Removal Rate (MRR) using Cause and Effect diagram. The process optimization were done on parameters in terms of standardizing and optimizing spark gap for maximum MRR, change of electrode plating materials, new innovation in auto flushing by adaptor and change in design of suctioning respectively. After these process improvements, standardization obtained on EDM machines in terms of the spark gap, generator parameter, standard flushing adopter and standard fixture for suctioning. It is evident that there is a substantial reduction in the time taken in each trial and also there is an increase in MRR of almost 28 % for all depths. Increase in productivity by 33-37 % and also saving in cost obtained.
In current years, glass fibre-reinforced plastics (GFRP) are being widely used in variety of engineering applications in many different fields such as aerospace, automotive and aircraft industries due to their light weight, high modulus, high specific strength and high fracture toughness. Milling of GFRP composite materials is a rather complex task owing to its heterogeneity and the number of problems, such as surface accuracy and delamination of drilled hole, which appear during the machining process, associated with the characteristics of the material and the cutting parameters. Present paper focuses the experimental details to find out roughness on drilled hole in GFRP composite laminates by using Taguchi‟s DOE L9 orthogonal array. The main objective of the present work is to optimize the process parameters in the drilling of GFRP composite using Taguchi DOE and to find the significance of each process parameter using ANOVA. As far as the effect of input factors are considered, the factors drill diameter and drill material both have nearly predominant influence on the surface roughness of drilled holes on GFRP composite by using CNC milling process.
Evolution of mankind in the genes is the base of Genetic Algorithm. Changes in the chromosomes have made this possible. This natural phenomenon can also be mimicked for developing better results with help of GA. Generally, GA is used to maximize the objective but it can also be minimized by making some changes in the function. Steps involved in solving problems are deciding the objective function and constraint equations. GA is applied to the problems where number of variables is large and nonlinearity is involved. This paper discusses some basics of GA and its applications in various transportation problems by many researchers.
Energy as become our routine process in our lifestyle for every work to be done. In this paper we have discussed that how energy audit will help us to save energy in our electric bill with an analysis of a residential house. Nowadays saving energy has become an essential criteria rather than generation, we may find plenty ways for generation but we should also concentrate on consuming it also in a proper and appropriate manner. As a part of our IET Vision 10MW, initial work is started in this paper to conduct electrical energy audit for a double bedroom house in Chennai. The proposed procedure is adapted to conduct the electrical energy audit with suitable recommendation. After the critical analysis several suitable recommendations is suggested for the house to implement with and without investment including incorporating renewable power generation. The breakeven chart is presented to check the effectiveness of the recommendation. In future our team are planning for a big project that will cover 25 homes, 10 commercial buildings and 2 industries.
In a chemical processing plant, aqueous glycerin solution flows in a narrow channel. The properties of aqueous glycerin solution are a function of temperature and the pressure drop along the channel is continuously monitored. For a relatively low flow, known channel dimensions, wall temperature and pressure drop along the channel, the mass flow rate of the fluid is required to be obtained. This paper presents the development of mathematical model of above cited process in line with Couette flow equation and a quantitative study of mass flow rate using finite difference method.
The EDM is nonconventional mfg. process in which Correct Selection of Manufacturing Conditions is important aspects to take into consideration in the majority of manufacturing processes and, specifically, in process like electrical discharge machining (EDM) of conductive cold work tool steel like K-110 i.e. HCHCR D-2 1.2379. The Parameters to be Optimized are Peak current (Ip), Pulse on time (Ton), Duty cycle (n) for improving the technological characteristics such as Surface Roughness, electrode wear and Material removal rate .In this article ,a review of Die –Sinking EDM process for cold work tool steels, as well as equipments used for carrying out experiments, are presented. Using design of Experiments techniques and Minitab-17 for analysis purpose .The experiment is designed using Taguchi L-9 Method. While only performing a small number of experiments, to select the optimal machining conditions for the finishing stage of the EDM process.
Composite materials are playing a vital role in various applications related to fields of aerospace engineering, automotive technology, marine engineering, civil engineering etc. This is because of their improved properties in terms of weight, strength, stiffness, etc. These properties can be tailor-made in case of composites by controlled use of various design parameters like ply angle, ply thickness, stacking sequence, etc. Properties expected by design engineers are conflicting in nature so there is a wide scope for optimization in the design of a composite laminate. In this paper, a comprehensive optimization procedure. OptiComp is presented for optimal design of a composite laminate. The procedure can handle a variety of laminate design problems effectively. A problem of minimization of the weight of a composite laminate subjected to in-plane loads is solved in the present study using OptiComp.