ABSTRACT The plastic extruder system is an important process in the solid waste recycling system.
ABSTRACT Abundant and economical energy is the life blood of modern civilization.
Abstract This paper presents experimental and simulation study of the effects of stress on microstructure and failure morphology of low carbon steel under plane stress conditions. The study has revealed large extension of grains at the point of fracture and, stress and strain looped around the pearlitic faces of the microstructure matrix. The stress and strain distributions in the microstructure have shown that concentration of stress and strain on the pearlite were instrumental to oblique f...
ABSTRACT Development and enhancement of innovative engineering curriculum is a vital exercise in producing well grounded graduates that can perform in todays world.
ABSTRACT A multipurpose machine for sieving of Ogi (ground corn slurry) and other applicable grain slurry compromises the sieving container which receives water from an external water unit and the slurry Ogi to be sieved through a hopper.
ABSTRACT Sawdust particles soon after emission from the cutting machine usually move dynamically with transformation in some dimensions. This paper models the sawdust particle motion as a two dimensional transformation system of continuous time series. Cost could be saved using this approach instead of utilizing dynamic systems that depend on time history. TWP dimensional graphical representation of continuous time series of Duffing's dynamic system for sawdust particles was investigated with...
ABSTRACT Heat flow patterns in two salt bath furnaces were studied in this work using finite element(FE) analysis. The implications of the heat flows on long term stability of furnace performance were evaluated. One design had a purely silica brick back-up after the embedded heating element with asbestos and glass-wool fiber insulation just before the outer steel shell. The other had an additional air-gap insulation formed by cylindrical steel belts with spacers placed after the silica back-...
ABSTRACT Fuel flexibility and capacity to burn broad spectrum of fuels at high combustion efficiency with minimum emissions of greenhouse gases are few of several key advantages fluidized bed combustion technology has over other existing combustion technology. This report examines the design, development and testing of an experimental model Bubbling fluidized bed combustor (BFBC). The developed BFBC has unique inert bed's temperature regulating system which implies that the use of external s...
ABSTRACT A solar-powered adsorption refrigerator using activated carbon1methanol.pair was designed and fabricated. The refrigerator has three major components: collector,condenser, and evaporator. A 3 mm thick flat glass was used as flat plate collector. The condenser was made of spirally 'coiled copper tube immersed in pool of stagnant water contained in a reinforced concrete tank. The evaporator was fabricated from standard ' 15.6, rnm diameter copper tubing. The activated carbon used as ad...
ABSTRACT Mathematics has diverse applications as decision making tool. This study investigated the use of a proposed pure mathematical formulation (is. excluding human factor) for citing appropriately the location of political capital city an inhabited designated area.
ABSTRACT Titanium alloy (Ti-6Al-4V) can be economically machined with high-pressure coolant (HPC) supply. In this study, an artificial neural network (ANN) model was developed for the analysis and prediction of tool wear parameters when machining Ti-6Al-4V alloy with conventional flow and high-pressure coolant flow, up to 203 bar. Machining trials were conducted at different cutting conditions for both rough and finish turning operations with uncoated carbide (K10 grade) and double TiAlN/TiN,...
ABSTRACT This contribution is on the development of a neurofuzzy model that aids in capturing imprecision and uncertainty in the. various road bump parameters. Road bumps are structures built on roads to act as obstructions to vehicles plying these roads. The neurofuzzy methodology is used to check the vehicle speeds to acceptable standards. Particular use is made of neurofuzzy since it is an improvement on the traditional model proposed earlier in the literature. The work is motivated by the...
ABSTRACT The extensive completed research and continuous study of pendulum is due to its scientific and engineering importance. The present study simulate the Poincare solutions of damped, nonlinear and harmonically driven pendulum using FORTRAN90 coded form of the popular fourth and fifth order Runge-Kutta schemes with constant time step. Validation case studies were those reported by Gregory and Jerry (I 99()) for two damping qualities (ql' q2 = 2,4), fixed drive amplitude and frequency (g ...
Abstract Numerical simulation of thermal behavior of buildings was carried out with the application of Cooling Load Temperature Difference/Cooling Load Factor (CLTD/CLF) to estimate the energy required for cooling/heating of buildings. This was done to facilitate comparison of the energy being generated from a building while varying significant building parameters. Each factor contributing to space heat gain is described mathematically, considering energy balance within the system. The calcu...
ABSTRACT The effect of blank/punch diameter ratio (draw ratio) in deep drawing on earing for different gauges of Al 1200 sheet was studied. Using 60, 62, 64 and 65mm diameter circle blanks and 33mm diameter punch die, fully annealed Al 1200 sheets of gauge thicknesses 0.6 to 2.0mm were subjected to deep drawing on an ErrichsenR cup drawing machine. The results showed that with increase in sheet thickness, the smaller is the draw ratio that would draw the sheet. For 0.6-0.9mm sheet thickness,...