Current Issue ( Vol. : 6, Issue: 2, April-June 2018)   


Title: DESIGN, FABRICATION & ANALYSIS OF A GEARLESS POWER TRANSMISSION MECHANISM FOR SKEW SHAFTS
Author: Hawaldar, Rekha Fartiyal, Ram Naresh Yadav
Keyword: Driving Shaft, Driven Shaft, Bearing, Elbow Rod, Supporting Frame and mechanism
Page No: 14-17
Abstract: The main aim of this review paper is to give detail study about the gearless power transmission mechanism at right angle (900) with the help of L-shape rod (EL-BO ROD) of uniform diameter, Dimension (Identical rod). The mechanism is very important defining application in replacement of gear. It is mainly based on the theoretical, analytical and Finite Element Method (or FEA). Figuring of various parameters such as number of pins, material, dimension difference of component, speed and torque. Gearless power transmission for skew shafts minimize the losses, costs and save the time and space. This system countenance the changing in the orientation of shaft during motion which is very interesting and bewitching about this mechanism. Odd pins or links like 3, 5, 7, 9…must be used in this system and each links are fixed in the drilled hole at both ends of the shafts due to which motion is transferred. Functionally the system is very smooth and work effectively with a very minimum amount of power losses. Keywords: Driving Shaft, Driven Shaft, Bearing, Elbow Rod, Supporting Frame and mechanism Download PDF


Title: COMPOSITION OF SOLID WASTE- A GENERAL VIEW
Author: Dr. Swapan Kumar Maity
Keyword: Urbanization; Municipal Solid Waste; biodegradable; recycling
Page No: 18-22
Abstract: Municipal Solid Waste Management or MSWM is the burning issue in India as well as other developed countries. There are various challenges in MSWM in urban India which is the motivation of the present study. Due to the urbanization municipal solid waste (MSW) generation is enhanced and instinctive handling of MSW degrades the urban environment and causes health hazards. In this paper, an attempt is made to depict the major problems of MSWM, in addition to a comprehensive review of MSW generation, its characterization, collection, and treatment options as practiced in India. The current practice of MSWM in Indian states and important cities of India is also reported. Keywords: Urbanization; Municipal Solid Waste; biodegradable; recycling Download PDF


Title: BEARING FAULT DETECTION IN ROTATING ELECTRICAL MACHINES USING WAVELET TRANSFORM
Author: Alka Thakur, Dr. S. Wadhwani, Dr. A.K. Wadhwani
Keyword: Induction motors; bearings; fault detection; wavelet transform
Page No: 23-27
Abstract: In almost all the industrial drive systems induction motors plays a vital role because of their simple, efficient and robust nature. Detection and diagnosis of faults while the system is running can m inimise all kind of losses.Bearing problems are one major cause for induction motor drive failures. Motor failure due to bearing defect is an issue that has drawn an increasing industrial interest over recent years. Commonly-used signal analysis techniques, based on spectral approaches such as the fast Fourier transform, are powerful in diagnosing a variety of vibration-related problems in induction motor drives. Although these techniques provide powerful diagnostic tools in stationary conditions, they fail to do so in several practical cases involving non-stationary data. Wavelet transform tools are considered superior to the fast Fourier transforms as they can effectively analyze non-stationary signals. This work proposes the use of wavelet transform to analyze vibration data in motors affected by bearing defects. These wavelet tools are applied here, with a suitable choice of a mother wavelet function, to a vibration monitoring system to accurately detect and localize faults occurring in the system. Keywords: Induction motors; bearings; fault detection; wavelet transform Download PDF