Time filter

Source Type

Chandra A.P.J.,University of Mysore | Chandra A.P.J.,Adichunchanagiri Institute of Technology
IEEE Transactions on Instrumentation and Measurement | Year: 2012

Laboratory experiments are integral part of science and engineering education. Automation is changing the nature of these laboratories, and the focus of the system designer is on the availability of various interfacing tools to access the laboratory hardware remotely with the integration of computer-supported learning environment. This paper presents the novel design techniques to access experiments on electrical machines remotely through the Web using virtual instrumentation (VI) tools. The general Web-interface architecture is presented to facilitate control and measurement of experimentation parameters online with complete isolation from the electrical line voltage. LabVIEW-supported VI tools are used to create the Web-based automation and control of the experiment hardware. The custom-built electrical hardware is designed to interface the Web server with the experimental resources and to support user-friendly interface to access the data online. The safety issues while operating the electrical machines online are addressed through the control logic designed by the graphical code. The designed system exploits the data acquisition and the LabVIEW features to extend the dc motor and generator experimentation online along with the acquired data that are presented in virtual meters as well as in graphical plots. © 2006 IEEE.

Pushpa,Adichunchanagiri Institute of Technology | Shobha G.,Rashtreeya Vidyalaya College of Engineering
2013 IEEE International Conference on Computational Intelligence and Computing Research, IEEE ICCIC 2013 | Year: 2013

Social Network Analysis is an important tool to understand and predict the behavioral patterns of the telecom customers. Sciocentric (whole) network analysis processes massive amount of network data, which may include millions of customers and relationships between them. However building the egocentric network for each customer effectively reduces the processing cost and gives the detail visualization of the connection pattern of the telecom customers. This paper addresses the logic behind the egocentric network analysis by taking into account the level of influence of individuals whom they are connected within a network. We also discusses the features of those customers who adapted to certain services within a network and the likelihood of the others adapting to similar services from the same network is predictable. Hence the ROI on marketing towards consumers who belongs to same network increases significantly. © 2013 IEEE.

Arun Kumar N.P.,Honeywell | Jagadeesh Chandra A.P.,Adichunchanagiri Institute of Technology
International Journal of Online Engineering | Year: 2016

Remote instrumentation and collaborative learning methods have enhanced the experimental learning aspects of engineering education. Automation is changing the nature of these laboratories and remote access techniques are providing access to server machine from anywhere in the world through internet. This provides an opportunity to develop the remote instrumentation laboratories using which students can perform their lab experiments remotely all over the day and thereby increasing the productivity of the lab setups and measuring instruments. This paper presents the detailed architecture and the implementation details of remote DSP lab instrumentation. LabVIEW user interface is developed to control all the test instruments and their related hardware interfaces. Radmin tool is used as remote access tool to integrate multiple clients to server machine through wired/wireless internet access. Hardware interface is designed and developed to route data and control signals from data acquisition card to the respective hardware and to control the test instruments.

Nanjesh B.R.,Adichunchanagiri Institute of Technology | Rajesh T.H.,Adichunchanagiri Institute of Technology | Tejonidhi M.R.,Adichunchanagiri Institute of Technology | Ashwin Kumar H.V.,Adichunchanagiri Institute of Technology
2013 IEEE Conference on Information and Communication Technologies, ICT 2013 | Year: 2013

Parallel computing operates on the principle that large problems can often be divided into smaller ones, which are then solved concurrently to save time (wall clock time) by taking advantage of non-local resources and overcoming memory constraints. Merge sort is not only a fast and stable sort algorithm, but it is also an easy to understand and popular representative of the rich class of divide-and-conquer methods, hence better understanding of merge sort parallelization can contribute to better understanding of divide-and-conquer parallelization in general. The main aim is to form a common single node model for both MPI and PVM which demonstrates the performance dependency of parallel merge sort on RAM of the nodes (desktop PCs) used in parallel computing. The single node model consists of a user, a master, capable of handling requests from the user and a slave, capable of accepting problems from the master and sending the solution back. The master and the slave communicate with each other using MPICH-2. The master will monitor the progress and be able to compute and report the time taken to solve the problem, taking into account the time spent in assigning the problem into slave and sending the results along with the communication delays. We aim to evaluate and compare these statistics to decide which among MPI and PVM gives faster performance. And also we compare with the time taken to solve the same problem in serial execution to demonstrate communication overhead involved in parallel computation. We aim to compare and evaluate the time statistics obtained for different sizes of RAM under parallel execution using MPI and PVM in a single node involving only two cores, where one acts as master and other as slave. We also show the dependency of serial execution on RAM for the same problem by executing its serial version under different sizes of RAM. © 2013 IEEE.

Gowda M.R.,Adichunchanagiri Institute of Technology | Narasimhan M.C.,Adichunchanagiri Institute of Technology | Karisiddappa,Adichunchanagiri Institute of Technology
Journal of Materials in Civil Engineering | Year: 2011

Concrete is a globally accepted construction material in all types of civil engineering structures. The increase in construction has brought heavy demand for ingredients of concrete such as cement and sand, and these materials are becoming costly and scarce. The cost of cement is also steadily increasing. With ever-increasing environmental problems because of industrial waste products comes a great need to use these products in an appropriate manner to reduce health and environmental problems. Rice husk ash (RHA) and quarry dust (QD) are two such waste materials, the use of which in the production of concrete may prove advantageous in an agriculture-driven economy like the one in India, where rice is a major crop and QD is an abundantly available industrial waste product. This investigation attempts to use RHA and QD as partial replacements for cement and sand, respectively, in developing self-compacting mortar (SCM) mixes. The replacement percentage of cement by RHA varies in the range of 5-20%. On the basis of earlier results, an optimum percentage level of 40% sand replacement by QD is adopted. The compressive strengths of a control SCM mix (without RHA and QD) and compressive strengths of SCM mixes (with RHA and QD) are obtained experimentally at different ages of curing and are compared to assess the viability of adding RHA and QD in SCM mixes. © 2011 American Society of Civil Engineers.

Varun E.,Adichunchanagiri Institute of Technology | Ravikumar P.,Adichunchanagiri Institute of Technology
Proceedings - 6th International Advanced Computing Conference, IACC 2016 | Year: 2016

Extracting the customers who share similar interests that are connected via set of relationships in Telecom social network is a challenging scenario. This paper addresses an efficient method of building multi-relational and heterogeneous social network for telecom customers and identifying social structures present in the telecommunication network. The telecom social network is constructed by considering multiple attributes and different services provided by the telecom industry. The telecom network is constructed by using adjacency matrix for all the customers. This approach deals with finding the social position of the customer by different measures like centrality, betweenness, density and closeness. The analysis on the centrality measure are made to identify the central and most influential customers in the network, to provide customized services for retention of that customer. This paper also describes the extraction of dynamic patterns, future structures which aids in retention of customer and managing the market requirement more efficiently. © 2016 IEEE.

Gowda M.R.,Adichunchanagiri Institute of Technology
Indian Concrete Journal | Year: 2014

Papercrete is an incredible building material that is lightweight, amazingly insulate, and low cost. Ordinary Portland cement is the most widely used, though costly and energy intensive ingredient used in the production of concrete mixes. Unfortunately production of cement involves emission of large amounts of carbon dioxide in to the atmosphere, a major contributor for green house effect and global warming. Hence, it is inevitable to either to search for another material or partly replace it by an alternate material. Any such material which can be used as an alternate or as a supplementary to Portland cement should lead to a sustainable development. Our project aimed to find out an alternative form of construction for low income house schemes for the Society. Although 45% of discarded paper is recycled annually, 55% is thrown away or goes into the landfill. Therefore, efforts have been made to utilise the waste paper into concrete and form 'Papercrete'. Papercrete is a construction material which consists of paper sludge, fine aggregates and Portland cement. It is an environmental friendly material due to the significant recycling content of waste paper. In this investigation an attempt has been made to develop Papercrete mixes using waste paper along with locally available materials and studied some of the few hardened and durability properties of developed various Papercrete concrete mixes in the laboratory.

Ramesh B.N.,Adichunchanagiri Institute of Technology | Suresha B.,Indian National Institute of Engineering
Materials and Design | Year: 2014

Abrasive wear performance of fabric reinforced composites filled with functional fillers is influenced by the properties of the constituents. This work is focused on identifying the factors such as filler type, filler loading, grit size of SiC paper, normal applied load and sliding distance on two-body abrasive wear behaviour of the hybrid composites. Abrasive wear tests were carried on carbon fabric reinforced epoxy composite (C-E) filled with filler alumina (Al2O3) and molybdenum disulphide (MoS2) separately in different proportions, using pin-on-disc apparatus. The experiments were planned according to Taguchi L18 orthogonal array by considering five factors, one at two levels and the remaining at three levels, affecting the abrasion process. Grey relational analysis (GRA) was employed to optimize the tribological parameters having multiple-response. Analysis of variance (ANOVA) was employed to determine the significance of factors influencing wear. Also, the comparative specific wear rates of all the composites under dry sliding and two-body abrasive wear were discussed. The analysis showed that the filler loading, grit size and filler type are the most significant factors in controlling the specific wear rate of the C-E composite. Optimal combination of the process parameters for multi performance characteristics of the composite under study is the set with filler type as MoS2, filler loading of 10wt.%, grit size 320, load of 15N and sliding distance of 30m. Further, the optimal parameter setting for minimum specific wear rate, coefficient of friction and maximum hardness were corroborated with the help of scanning electron micrographs. © 2014 Elsevier Ltd.

Suresha B.,Indian National Institute of Engineering | Ramesh B.N.,Adichunchanagiri Institute of Technology | Subbaya K.M.,Indian National Institute of Engineering | Ravi Kumar B.N.,Bangalore Institute of Technology | Chandramohan G.,Karpagam College of Engineering
Materials and Design | Year: 2010

The influence of graphite filler additions on two-body abrasive wear behaviour of compression moulded carbon-epoxy (C-E) composites have been evaluated using reciprocating wear unit and pin-on-disc wear unit under single pass and multi-pass conditions respectively. The carbon fabric used in the present study is a plain one; each warp fiber pass alternately under and over each weft fiber. The fabric is symmetrical, with good stability and reasonable porosity. Abrasive wear studies were carried out under different loads/abrading distance using different grades of SiC abrasive paper (150 and 320 grit size). Graphite filler in C-E reduced the specific wear rate. Further, the wear volume loss drops significantly with increase in graphite content. Comparative wear performance of all the composites showed higher specific wear rate in two-body wear (single-pass conditions) compared to multi-pass conditions. Further, the tribo-performance of C-E indicated that the graphite filler inclusion resulted in enhancement of wear behaviour significantly. Wear mechanisms were suggested and strongly supported by worn surface morphology using scanning electron microscopy. © 2009 Elsevier Ltd. All rights reserved.

Suresha B.,Indian National Institute of Engineering | Ramesh B.N.,Adichunchanagiri Institute of Technology | Subbaya K.M.,Indian National Institute of Engineering | Chandramohan G.,Karpagam College of Engineering
Journal of Composite Materials | Year: 2010

Fiber and particulate reinforced polymeric composites are known to possess high strength and attractive wear resistance in dry sliding conditions. Though the reinforcement and/filler type are known to control the properties, less is known about their tribo performance especially with graphite as filler material. How these composites perform in abrasive wear situations needs a proper understanding. Hence, the present investigation reports on the mechanical and three-body abrasive wear behavior of carbon fabric reinforced epoxy (C-E) and silane treated graphite filled C-E (Gr-C-E) composites. The mechanical properties were evaluated using Universal testing machine. In three-body wear tests, quartz particles of size 150-200 ?m were used as dry and loose abrasives. Three-body abrasive wear tests were conducted using rubber wheel abrasion tester under different loads/abrading distances. The results showed that the wear volume increased with increasing abrading distance and the specific wear rate decreased with abrading distance/load and depends on filler loading. However, the presence of silane treated graphite filler in C-E showed a promising trend. Further, the abrasive wear volume of composites has been correlated with mechanical properties such as hardness, tensile strength and percentage elongation. The worn surface features, when examined through scanning electron microscopy, showed more number of broken carbon fibers in C-E compared to graphite filled C-E composites. © The Author(s), 2010.

Loading Adichunchanagiri Institute of Technology collaborators
Loading Adichunchanagiri Institute of Technology collaborators