Kongu Engineering College

About: Kongu Engineering College is a based out in . It is known for research contribution in the topics: Computer science & Cluster analysis. The organization has 2001 authors who have published 1978 publications receiving 16923 citations.

Performance comparison of multicast protocol for physically hierarchical ad hoc networks using neural concepts

Abstract: An ad hoc network is a dynamically reconfigurable wireless network with no fixed infrastructure or central administration. Each host is mobile and must act as a router. Routing and multicasting protocols in ad hoc networks are faced with the challenge of delivering data to destinations through multihop routes in the presence of node movements and topology changes. Most of the proposed algorithms assume physically flat network architecture with mobile hosts having homogenous capability in terms of network resources and computing power. In practice however, this assumption often may not hold true since there exists various types of mobile hosts with different role and mobility pattern. Here we consider mobile ad hoc network that have physically hierarchical architecture where different types of mobile hosts form an ad hoc network hierarchy. A way for automatically organizing the hierarchical architecture is provided by the self-organizing map (SOM). The self-organizing map is one of the most prominent artificial neural network models adhering to the unsupervised learning paradigm. The simulation of the hierarchical ad hoc networks using neural concepts yields better performance.

Prediction of Cutting Force in Turning Process-an Experimental Approach

Abstract: This Paper deals with a prediction of Cutting forces in a turning process. The turning process with advanced cutting tool has a several advantages over grinding such as short cycle time, process flexibility, compatible surface roughness, high material removal rate and less environment problems without the use of cutting fluid. In this a full bridge dynamometer has been used to measure the cutting forces over mild steel work piece and cemented carbide insert tool for different combination of cutting speed, feed rate and depth of cut. The experiments are planned based on taguchi design and measured cutting forces were compared with the predicted forces in order to validate the feasibility of the proposed design. The percentage contribution of each process parameter had been analyzed using Analysis of Variance (ANOVA). Both the experimental results taken from the lathe tool dynamometer and the designed full bridge dynamometer were analyzed using Taguchi design of experiment and Analysis of Variance.

Quasi-static crushing and energy absorption characteristics of thin-walled cylinders with geometric discontinuities of various aspect ratios

Abstract: IN THIS PAPER, ENERGY ABSORPTION AND DEFORMATION CAPACITY OF CIRCULAR THIN-WALLED MEMBERS WITH ELLIPTICAL CUT-OUTS ARE INVESTIGATED BOTH NUMERICALLY AND EXPERIMENTALLY. THIN-WALLED MEMBERS POSSESS THE UNIFORM HEIGHT, THICKNESS, AVERAGE CROSS SECTIONAL AREA, MATERIAL AND VOLUME ARE SUBJECTED TO AXIAL QUASI-STATIC LOADING. TO CONDUCT SUCH TESTS, SPECIAL FIXTURE ARRANGEMENT IS DESIGNED FOR PLACING THE SPECIMEN IN THE COMPRESSION LOADING MACHINE. THE DEFORMATION MECHANISMS AND THE CORRESPONDING COLLAPSE MODE ALONG WITH ITS ENERGY ABSORPTION OF THE THIN-WALLED TUBES WERE INVESTIGATED IN DETAIL FOR VARIOUS ASPECT RATIOS (0.315, 0.523, 0.854, 1, 3.375 AND 4.08). THE EXPLICIT FINITE ELEMENT CODE ABAQUS WAS THEN EMPLOYED TO PERFORM THE NUMERICAL STUDIES INVIEW OF MITIGATING THE INFLUENCE OF CUTOUT SHAPE, LOCATION AND SYMMETRY ON ENERGY ABSORPTION AND CRUSH CHARACTERISTICS. IN ASPECT RATIO OF 4.08, WHOSE MAJOR AXIS LENGTH OF 24.5 MM OBSERVED MAXIMUM CRASH FORCE EFFICIENCY (CFE) OF 14% POSSESSING SYMMETRIC DISCONTINUITY. THE RESULTS OF EXPERIMENTAL AND SIMULATIONS ARE IN GOOD AGREEMENT AND SHOWS THAT THE LOCATION AND SYMMETRY OF CUTOUTS HAD CONSIDERABLE EFFECT ON COLLAPSE CRUSHING BEHAVIOUR.

Ozone for Fruit Juice Preservation

Abstract: Thermal processing of fruit juices is the widespread, effective but conventional method to enhance the shelf life of fruit juices. Though food safety is guaranteed by conventional methods, nutritional loss is inevitable. Practising novel methods to preserve fruit juice without compromising their quality is the emerging trend in juice processing. Novel nonthermal methods such as high-pressure processing, ultraviolet treatment, pulsed electric field, and pulsed light technology have been experimented with for the preservation of fruit juices. Though the technologies retain the quality and enhance shelf life, involvement of immense cost in installation is found to be greater disadvantage. Authorization of ozone as a direct food additive in 2001 increased attention on ozone applications, particularly in fruit juices. Due to its higher oxidation potential, ozone holds antimicrobial properties. Simultaneously, ozone has its limitations too. This chapter deals with ozone generation, destruction of microbes and mycotoxin, effects of ozone on quality attributes of juices, and limitations of ozone in fruit juice applications.