Paper Title

DESIGN OF A MULTI PURPOSE FIXTURE FOR 4-AXIS CNC MACHINE

Abstract

Many of the parts require sophisticated fixture in order to be machined. A variety of CNC machine brands all of which have differently designed tables. They needed a way of sharing the clamping systems with all of the machines. After reviewing the fixtures and machines, we designed, and tested a clamping system which would eliminate the need for different fixtures for each machine. This means that each time an operation is complete the part, with its current fixture, must be taken out of the CNC machine and re-fixture for the next operation. Information on the CNC machines will be gathered and the similarities and differences of the tables and fixtures will be analyzed. Based on this data a new process and design will be created. Finally, we will look at the effectiveness of the proposed designs and improvements to verify that it will improve the manufacturing process.
In the present design BFW BMV40 CNC machine take in to consideration for developing new fixture design. As a designer the drive table specifications are considered as per the machine developer and rest of the part is considered as per the customer requirement of individual parts.
Different stages of rotor blades take in to consideration to prepare a multiple usage fixture for all clamping requirements.

Keywords – fixtures, 4-axis rotary CNC machines, clamping, time monitoring design optimization.

Paper Title

A REVIEW ON ORGANIC RANKINE CYCLE WITH RESPECT TO POWER PLANT ENGINEERING

Abstract

New energy conversion technologies required in order to insure the production of electricity without generating the environmental pollution. An important number of new solutions have been proposed to generate electricity from alternative heat source. Waste heat recovery is one of the most important development fields for the organic Rankine cycle (ORC). It can be applied to heat and power plants (for example a small scale cogeneration plant on a domestic water heater) , or to industrial and farming processes such as organic products fermentation, hot exhausts from ovens or furnaces (e.g. lime and cement kilns), flue-gas condensation, exhaust gases from vehicles, inter cooling of a compressor, condenser of a power cycle, etc. Biomass is available all over the world and can be used for the production of electricity on small to medium size scaled power plants. The problem of high specific investment costs for machinery such as steam boilers are overcome due to the low working pressures in ORC power plants. Another advantage is the long operational life of the machine due to the characteristics of the working fluid, that unlike steam is non eroding and non corroding for valve seats tubing and turbine blades. The ORC process also helps to overcome the relatively small amount of input fuel available in many regions because an efficient ORC power plant is possible for smaller sized plants.
Keywords – ORC, Applications of ORC, ORC to power plants

Paper Title

Structural Static Analysis of Connecting Rod

Abstract

The principal of connecting rod is to convert linear motion of piston to reciprocating motion of crankshaft. It is the main component of internal combustion (IC) engine. The connecting rod takes more maximum stress compare to other components. so stress analysis in Connecting rod is Very important. In this study, detailed load analysis was performed on connecting rod, followed by finite element method in hypermesh and abaqus medium. The maximum stresses in different parts of connecting rod were determined by abaqus.in this work we are investigated the stress, strain deformation.

Paper Title

A REVIEW ON THERMAL BARRIER COATINGS ON GAS TURBINE ENGINE BLADES AND VANES

Abstract

Thermal barrier coatings are used to protect blades and vanes in the hot sections of gas turbines. They consist of a thick porous ceramic layer deposited on a alumina forming metallic bond coat in contact with the nickel- based super alloy substrate. They are designed to prolong the components lifetimes or to increase gas temperature, and therefore efficiency. In service, the structure and composition of the various layers evolve, due to sintering of the ceramic layer, oxidation of the bond coat, and inter diffusion phenomena with the substrate. As a result, the properties of each layer are affected, as is the interfacial toughness. These evolutions, combined with applied external stresses, may lead to bond coat rumpling, crack formation at the bond coat/ceramic interface and the ceramic layer may eventually spall off. In addition to these intrinsic degradation modes, interactions with the environment can accelerate the system degradation. This paper reviews the before researches about barrier coatings and discuss about the future implementations by considering present approaches.

Keywords – Thermal barrier coatings, Materials used for barrier coatings, Efficiency of gas turbine.

Paper Title

A STUDY ON PROGRESS OF CRYSTALLINE MATERIALS IN GROWTH AND ITS CHARACTERIZATION

Abstract

The crystalline introduces considerable simplifications into the description of structure and the formulation of theories for the physical properties. Two main strategies currently in use for crystal engineering are based on bonding and coordination complex. The Crystalline Sstructure Design today contains atomic positional parameters for nearly 300 000 crystal structures, and this forms the basis for heuristic or synthon-based or “experimental” crystal engineering.A primary goal of this paper is to understand the structure of materials with the resulting reviews by making this theoretical connection, and able to create predictive models which will help materials , further analyze the nanocomposite structures and anticipate the effects those microstructures .

Keywords – crystalline materials, solid state physics, molecular, nano, composite.

Paper Title

THERMAL ANALYSIS OF TUBULAR HEAT EXCHANGERS USING ANSYS BY USING ALLOY MATERIALS AS TUBE MATERIALS

Abstract

Tubular Heat exchangers can be designed for high pressures relative to environment and high-pressure differences between the fluids. Tubular exchangers are used primarily for liquid-to-liquid. An attempt is made in this paper is for the Design of shell and tube heat exchangers by modeling in UGNX8.0 by taking the Inner Diameter of shell is 600 mm, length of the shell is 1000 mm and Outer diameter of tube is 12.5mm, length of Tube is1000mm and Shell material as Steel 1008, Tube material as alloy materials to resist corrosive effect TP439and AL29-4.
By using modeling procedure Assembly Shell and Tube with water as medium is done. By using ANSYS software, the thermal analysis of Shell and Tube heat exchangers is carried out by varying the layout. Comparison is made between the Experimental results, ANSYS. With the help of the available numerical results, the design of Shell and Tube heat exchangers can be altered for better efficiency. This paper presents the variations in lay out with water as medium with significant flow at the top level of exchanger and equal distribution of tubes pitch. Analysis comparison with before layout and materials are observed.

Extensions : material used for tubes, tubes layout, corrosion resistance, higher thermal heat conductive.

Paper Title

Performance and Productivity in Parallel Computing:A Case Study from the Past to the Future

Abstract

Reproduction of a computer is a decisive technology that plays a major role in several areas in science and engineering. The companies which are working on HPC (High Performance Computing) are simply shifting their work from the logical computing market toward the big business high-performance computer market where the furthermost demand is for money-making of midrange performance computers. In developing High Performance Computing software, time to solution is an important metric. This metric is comprised of two main components: The human effort required developing the software, plus the amount of machine time required to execute it. To date, little experiential work has been made to study the first component: the human endeavor required and the effects of approaches and practices that may be used to reduce it. In this paper, we describe a sequence of studies that address this problem and a survey is presented since beginning of parallel computing up to the use of present state-of-art multi-core processors.

Keywords : Parallelism, High Performance Computing, Modularity & Multi core processor.

Paper Title

ID BASED CONVERSION USING CLOUD REVERSAL CONSULTANT WITH ITS REQUESTS

Abstract

Identity-primarily based encryption (IBE) is a public key cryptosystem and eliminates the needs of public key infrastructure (PKI) and certificate management in conventional public key settings. Due to the absence of PKI, the revocation trouble is an essential trouble in IBE settings. Several revocable IBE schemes were proposed regarding this difficulty. Quite recently, by means of embedding an outsourcing computation technique into IBE, Li et al. Proposed a revocable IBE scheme with a key-replace cloud provider company (KU-CSP). However, their scheme has shortcomings. One is that the computation and communiqué expenses are better than previous revocable IBE schemes. The different shortcoming is lack of scalability inside the experience that the KU-CSP ought to preserve a mystery value for every consumer. In the thing, we advise a brand new revocable IBE scheme with a cloud revocation authority (CRA) to clear up the 2 shortcomings, specifically, the overall performance is significantly progressed and the CRA holds best a machine secret for all of the customers. For security analysis, we reveal that the proposed scheme is semantically cozy underneath the decisional bilinear Differ-Hellman (DBDH) assumption. Finally, we make bigger the proposed revocable IBE scheme to give a CRA-aided authentication scheme with length-confined privileges for managing a massive variety of numerous cloud offerings.

Keywords : Encryption, authentication, cloud computing, outsourcing computation, revocation authority.

Paper Title

COMPREHENSIVE STUDY OF DESIGN AND FLEXIBLE CONTROL OF A DSTATCOM OPERATING IN VOLTAGE CONTROL MODE

Abstract

In this Project, a new DSTATCOM topology with reduced dc link voltage is proposed. The distribution static compensator (DSTATCOM) is used for load compensation in power distribution network. In the presence of feeder impedance, the inverter switching distorts both the PCC voltage and the source currents. A new DSTATCOM topology with reduced dc link voltage is proposed. The topology consists of two capacitors: one is in series with the interfacing inductor of the active filter and the other is in shunt with the active filter. The series capacitor enables reduction in dc-link voltage while simultaneously compensating the reactive power required by the load, so as to maintain unity power factor without compromising DSTATCOM performance. The shunt capacitor, along with the state feedback control algorithm, maintains the terminal voltage to the desired value in the presence of feeder impedance with the reduction in dc-link voltage, the average switching frequency of the insulated gate bipolar transistor switches of the DSTATCOM is also reduced. Consequently, the switching losses in the inverter are reduced. Detailed design aspects of the series and shunt capacitors are discussed in this paper. A simulation study of the proposed topology has been carried out using MATLAB/SIMULINK. Finally a fuzzy logic controller is applied for further reduction of harmonics on source side.

Keywords : DSTATCOM, Power quality, Active filter, Voltage control.

Paper Title

DESIGN OF A MULTI PURPOSE FIXTURE FOR 4-AXIS CNC MACHINE

Abstract

Conventionally, the resource allocation is formulated as an optimization problem and solved online with instant scenario information. Since most resource allocation problems are not convex, the optimal solutions are complicated to obtain in real time. Therefore, the conventional methods of resource allocation are facing significant difficulties to meet the ever-increasing QoS requirements of users with scarce radio resource. Assisted by cloud computing, a massive amount of historical data on scenarios can collect for extracting similarities among scenarios using machine learning. Moreover, optimal or near-optimal solutions of historical scenarios can be searched offline and stored in advance. When the measured data of the current scenario arrives, the current scenario is compared with historical scenarios to find the most similar one. Then, the optimal or near-optimal solution in the most similar historical scenario is adapted to allocate the radio resources for the current scenario. An example of beam allocation in multi-user massive multiple-input-multiple-output (MIMO) systems shows that the proposed machine-learning based resource allocation outperforms conventional methods..

Keywords – QOS, Machine learning, TARA.