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Page 166 of 977 Results 1651 - 1660 of 9762

D. V. Bhope, P. M. Padole
Application of miniature data logger for strain measurement in rotary components

Electrical resistance strain gages are used extensively for measurement of strain in machine components. In case of rotary components, the transfer of strain gages signals to the indicating device for measurement of strain gage reading is very critical. Conventional techniques involving Telemetry, Slip Ring and Rotary Transformer Systems are having certain drawbacks and mainly these are very costly systems. Therefore, it is felt necessary to develop the technique, which will be cheaper than the conventional techniques and will give the acceptable results. This paper reports the development and testing of alternate system for strain measurement in rotary components.

Roopa B. Math, M. M. Ganganahallimath, Basavaraj S. Anami , Shinde Harshvardhan
Automation of toll centre on national highway to achieve enhanced quality control and better customer service

Transport by road is one of the key areas in the present scenario. The roads have bridges, flyovers, Bus-lays and Truck-lays etc in small, medium and large categories. Especially National Highways are to be maintained in good condition in order to provide good service to transport carriers hence more money is required to maintain the roads. This money for maintenance and repair work of the roads is collected from the vehicle drivers at Toll-Centers. Toll centers are the centers where the tress-passers are charged for using the road. Presently Toll-Centers are collecting charges on the basis of Three-wheeler, Four-wheeler etc and also on the categories of Light Motor vehicle (LMV) and Heavy motor vehicle (HMV). At present the functioning is manual at Toll-Centers. For better status of it’s functioning, an idea for Automation is thought and applied considering even the weight carried by the vehicles, as it is most important factor for the damage of roads.

Vineet Singla, Dinesh Khanduja, K. S. Kasana, Kiran Jhamb
Quality assurance in technical education: issue and challenges

The task of nation building depends upon the quality and no. Of people coming out from our various school and colleges. And it is need less to say that quality education is only the tool through which these vast resources could be honed. So that the third millennium will proceed with accelerated pace in the direction of extensive research. And in this process we can’t deny or underestimate the role of students, schools, colleges, teachers and other governing bodies, but the molar analysis raises certain Questions. The interest in total quality management (TQM) has increased rapidly in recent years. Some people see TQM as something necessary to reach competitiveness but others claim TQM to be merely a management fad. Total Quality Management (TQM) is an approach towards maintaining quality of processes and systems in an organization. TQM calls for checking quality at every stage of product development rather than checking for the same at the very last stage. From the executive summary: ‘The term ‘Total Quality Management’ (TQM) is defined as a philosophy that integrates quality into all facets of an organization and focuses on systematic improvement. The process of TQM emphasizes on small continuous improvements rather than large-scale innovations. Tools adopted for use in Total Quality Management (TQM) range from simple charting techniques to esoteric statistical processes The tools can be used collectively to support an integrated TQM approach, or individually to solve a variety of everyday problems And a roadmap towards continues improvement of the deliverables The basic TQM tools include conducting brainstorming sessions, adopting cause and effect methods

Anita R. Warrier, Tina Sebastian, K. P. Vijayakumar, C. Sudha Kartha
Measurement of thermal and electronic transport properties of semiconductor thin films using photo thermal deflection technique

Photothermal deflection (PTD) is a nondestructive optical technique and we have developed a theoretical model suitable to analyze the variations of PT Signal amplitude due to changes in electronic and thermal properties in semiconductor materials. In the present work, transverse PTD in skimming configuration was used to study the thermal and electronic transport properties of Copper Indium Sulfide (CuInS2) thin films. The thermal diffusivity, minority carrier lifetime and surface recombination velocity of p type CuInS2 thin films with different thickness were determined by fitting the experimental curves using the theory. The experimental data was in good agreement with the theory.

T. Sornakumar, A. Senthilkumar, A. Rajadurai
Machinability of AISI 4340 steel with alumina based ceramic cutting tools

The machinability of AISI 4340 steel with alumina based ceramic cutting tools is discussed in this paper. In the present work, four types of advanced alumina based ceramic cutting tools are used. The machinability of AISI 4340 steel was evaluated by measurement of flank wear of the cutting tool inserts and surface finish of the turned work pieces. The Ti[C, N] mixed alumina ceramic cutting tools performed better on machining AISI 4340 steel.

M. B. Mohamed Haseeb, N. A. Mohamed Sarfraz Deedat
Hybrid suspension system using fuzzy logic control Electro magnetic suspension system (EMSS)

Electro Magnetic Suspension System (EMSS) is an independent-revolutionary suspension system that reacts instantly to changing road conditions by negating the up and down movement of wheels. Our paper proposes to amalgamate the features of superior control and greater comfort in a single system. To achieve this, we have designed a system that uses a Linear Electromagnetic Motor (LEM), which is mounted on each wheel to push and pull the wheel without jostling the car body. The electromagnetic motor use input from sensors throughout the vehicle designed to adapt to our system so as to react to bumps and potholes instantaneously. This is done by exerting downward force to extend the wheel into potholes while keeping the car level constant. As the wheel pops back up onto the road, the suspension recaptures nearly all the energy expended. We have designed a powerful control algorithm which is controlled by a fuzzy logic unit so as to provide greater momentum and reliability to the system. A detailed model of LEM has been created in which we have focused on stress distribution and displacement analysis under working conditions. We have also simulated a customized fuzzy logic controller for our system and beyond smoothing out bumpy roads, the system also improve handling, virtually eliminating body roll in tight turns and minimizing pitching motion during braking and acceleration as depicted in the performance studies.

P. K. Rao, A. Daisy Rani, D. V. R. Koti Reddy, P. S. Srinivas Babu
Design and implementation of a laser tracking system using an IEEE 1451 standard Interface through Bluetooth technology

This paper presents the design of a laser tracking system and its implementation using an IEEE 1451 standard interface through Bluetooth technology which enables the user to monitor laser tracking at a remote place. The applications of which include the field of robotics, aero space industries, metallurgical industries and in defense. Laser tracking systems normally work on the amount of back scattered light during a rapid scan around the presumed object position. The proposed work is to make some modifications in the tracking mechanism. The suggested modifications are increasing the operating frequency of beam steering mirrors, increasing the contrast between the tracking object and the surrounding objects, using Kalman filtering techniques to accurately estimate motion and orientation of the tracking object. Final step is to implement the improved laser tracking system with IEEE 1451 standard interface. IEEE1451 standard consists of a Smart Transducer Interface Module (STIM) and Network Capable Application Processor (NCAP). STIM connects the signal from the laser tracking system to the network through NCAP. Programming of NCAP is done to make the system work in Bluetooth environment.

Samik Dutta, Ranjan Sen
Micro-CMM’s for the development of microsystems technology

The recent surge of making engineering components in micro scale level has given a new challenge to metrologists to measure in meso and micro scale. Keeping the general advantage of coordinate measuring machine over conventional measuring equipment, worldwide activities are going on to develop micro-CMMs in the range of, say, 25325310 mm and the resolution of about 1 nm. This paper deals with the important attributes of a micro-CMM, which is to be capable of measuring sub-micron accuracy intricate parts with minimum settings. Review of several frontier technologies in this field have been made here in order to focus the advantages and disadvantages of the various systems already developed or in the verge of development. Keeping in view the best technology and also the cost involved in such development work CMERI’s choice to embark on this emerging technology has also been discussed.

H. V. Ravindra, B. B. Manjunatha, N. Kuruvila
Estimation of surface roughness and dimensional accuracy using process parameters in wire cut EDM by artificial neural network

Wire cut EDM is a widely accepted non-traditional material removal process to manufacture components with intricate shapes and profiles irrespective of hardness. Due to complicated stochastic process mechanisms in wire-EDM, the relationships between the cutting parameters and cutting performance are hard to model accurately. Experiments were carried out machining the SKD11/D2A2, Tungsten Carbide and Mild steel material using brass wire of diameter 0.25 mm as tool. The input process parameters considered during experiments were servo voltage, offset distance, machining speed, pulse-on and pulse-off. Data’s were taken for different thickness and for different materials of same thickness and corresponding dimensional accuracy and roughness were measured. Artificial neural network is used for the estimation of the dependent parameters (dimensional accuracy and roughness) of WEDM. Finally, from the comparison it was observed that at 90% data in training, data estimated using Artificial Neural Network correlates well with measured value.

U. Surya Rao , A. Pal Pandi, D. Jeyathilagar
An analytic study of integrated total quality management practice in technical education – Faculty Perspective

The importance of the education sector, particularly in a professional discipline like engineering studies, is increasing day by day in our country. The quantitative growth of the institution in private sector provides smacks of attempts to commercialize and this need to be curbed. Nowadays, a major threat in our country is that of brain drain which may occur very rapidly in the near future due to attraction of good quality students to foreign universities. It is, therefore, necessary for the Indian technical education system to change its face by improving the standards and offer world-class quality technical education matching the global standards so as to attract the students to Indian technical educational institutions. At present, most of the manufacturing sectors are gaining more benefits by the adaptation of quality concepts like TQM, ISO 9001:2000, Six Sigma, Kaizen, 5S and others, which are now being tried in the service sector of education also. The aim of this research paper is to study and analyze the integrated TQM practice in technical education. This work starts with background theory and outlines the result of a study conducted on faculty from selected engineering institutions in Tamilnadu to obtain a faculty perspective of the integrated TQM practice in their technical institutions. The collected data has been analyzed and interpreted by using Statistical Package for Social Sciences (SPSS) like ANOVA and correlation analysis. Based on the analysis, useful findings and recommendations have been made.

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