Engineering

Research Papers/Topics in Engineering

COMPARATIVE STUDY OF STRENGTH OF TRUSS REINFORCED CONCRETE BEAM AND CONVENTIONAL REINFORCED CONCRETE BEAM

ABSTRACT This work presents comparative study of strength of truss reinforced concrete beam and conventional reinforced concrete beam. Two sets of 0.15 x 0.15 x 1m beams were cast. One set was cast using truss as a system of reinforcement at spacing of 100mm, 150mm and 200mm. The other set was cast using longitudinal bars and links at spacing of 100mm, 150mm, and 200mm as the conventional reinforcement. In all 27 truss and 27 conventional reinforce...

Application of a Direct Variational Principle in Elastic Stability Analysis of Thin Rectangular Flat Plates

ABSTRACT The purpose of this work is to use the energy approach in the form of direct variational principle (Rayleigh-Ritz method) for buckling analysis of thin rectangular plates with various boundary conditions using Taylor series shape functions. To do this, thin rectangular flat plate of various boundary conditions with three dimensions Ly, Lx and t was analyzed in this research. Ly and Lx are secondary and primary in-plane dimensions respecti...

Studies of Some Mechanical Properties of Watermelon Rind/Pawpaw Reel Reinforced Polyethlene Composites

ABSTRACT Some mechanical properties of water melon rind and pawpaw peel reinforced Low density polyethylene (LDPE) and Linear Low Density, (LLDPE) composites have been studied. Two sets of filler loaded LDPE and LLDPE composites were prepared using the injection moulding techniques at a processing temperature of 1900C Dispersing agent, silicon oil, was added to the composite as a plasticizer to improve flow, processabil...

Optimization of Cutting Parameters in Turning Operation of EN24 Steel with Minimum Lubrication

ABSTRACT This experimental study optimized the cutting parameters (depth of cut, feed rate, spindle speed) in turning EN24 steel (0.4% C) with hardness 40+2 HRC. In this, turning operation were carried out on EN24 steel by carbide P-30 cutting tool with minimum lubrication and the combination of the optimal levels of the parameters was obtained. In order to study the performance characteristics in turning operation, Taguchi method (consisting of th...

The Solution Behaviour of Butyric Acid-Water-Toluene System at 30oC and 1 Atmosphere

ABSTRACT Liquid-Liquid Equilibrium (LLE) data of Butyric acid-Water-Toluene ternary system were determined experimentally at a temperature of 30oC and 1 atmosphere. The complete phase diagram was obtained by determining the solubility curve and the tie-lines. The reliability of the experimental tie-line data was ascertained by using the Othmer and Tobias plot. Also, the UNIFAC model equations were used to estimate the activity coefficients of the ...

PREDICTION OF COMPRESSIVE STRENGTH OF SAW DUST ASH-CEMENT CONCRETE USING ARTIFICIAL NEURAL NETWORK METHOD

ABSTRACT This research work focused on the Prediction of Compressive strength of Saw dust Ash-Cement concrete using Artificial Neural Network method. Neural Networks offer a number of advantages including requiring less formal statistical training, ability to implicitly detect complex non-linear relationship between dependent and independent variables, ability to detect all possible interactions between predictor’s variables, and availability of ...

Experimental Study of Passive Cooling of a Building Using Long-Wave Night Sky Radiation in Owerri, Nigeria KY RADIATION IN OWERRI, NIGERIA

ABSTRACT An experimental study of the passive cooling of a building using longwave night sky radiation in Owerri, Nigeria is presented. The experimental rig consists of a standard (3.0 x 3.0 x 2.5m) room, flat plate sky radiator, heat exchanger, storage tank, water pump, interconnecting pipes and another standard room to act as control for the experiment. This test rig is a rectangular building made from 15.24cm hollow blocks. It has two windows located in the e...

Evaluation of Otamiri River, Nworie River and Borehole Water as Sources of Municipal Water Supply System

ABSTRACT The quality of water from Otamiri River, Nworie River and Bore hole water as sources of municipal water supply system in Owerri has been evaluated by analyzing samples of raw water collected from Otamiri River and Nworie River and comparing them with selected borehole and treated water samples. Some selected borehole water analyses were carried out for their physiochemical parameters, major ions, nutrients and bacteriological quality. The...

DESIGN, MODELLING AND SIMULATION OF CRUDE OIL DISTILLATION PLANT

ABSTRACT This research presents a flexible design model and robust algorithm for simulation of a crude oil plant which consists of a main column with several side strippers and pumparounds. The model is developed in commercial software HYSYS, Pro/II and Aspen Plus, in order to evaluate the performance of the simulation of these models on personal computers. The development of the mathematical model of the equipments of the unit is based on the relations that a...

Effect of Cement Particle Size on the Compressive Strength and Other Physiochemical Properties of Portland Cement

ABSTRACT The effect of cement particle size of Portland cement on the properties of cement mortar and paste were investigated. This was done at a definite mix and water-cement ratio. Fresh clinkers collected from Dangote Cement Factory was ground together with 3% gypsum using disc grinder. The chemical compositions of the clinker and gypsum were determined using XRF. Five different si...

Data Mining for Inventory Control for Blessed Superstores Limited: A Pilot Study

ABSTRACT As the nation’s economy has tightened, managers of retail businesses have been greatly challenged in recent years to become more strategic in their planning. These managers need fast, reliable and interpretable analysis of different transaction data in order to effectively assess the performance of their business organizations. The introduction of computerized Point-of-Sale terminals has made it possible for retailers to easily accumulate...

Multicomponent Adsorption Models and the Kinetics of Deodourisation of Commercial DPK

ABSTRACT The Multicomponent adsorption models and kinetics of deodorization of commercial kerosene (DPK) using conventional and non-conventional adsorbents have been investigated. The adsorbents used were bone char, limestone, silica gel and clay. The influence of contact time, adsorbent mass, pH, temperature, and adsorbent particle size on the rate percent aromatic and sulphur removal was evaluated. The experimental results were fitted to the Langmuir, Freundl...

Extruding Characteristics of FUTO Fabricated Extruder

ABSTRACT Optimum working condition for the FUTO fabricated extruder was established. The effect of screw speed on the viscoelastic property (die swell), sensory characteristic (hardness) and mechanical properties (modulus, ultimate strength and %elongation at break) of NNPC Polyolefin blends (HDPE/PP) were investigated. Screw speed had no effect on the mechanical properties of the unblended samples. Lower speed was found to fa...

Assessing the Flow Characteristics of Amanyi Stream for a Small Scale HydroPower Development

ABSTRACT The study assessed the flow characteristics of Amanyi stream for a mini hydro power development for Neke Uno, Isi-Uzo Local Government Area of Enugu State, Nigeria. The stream has a maximum flow discharge, Qmax of 8.5m3/s, average discharge, Qav of 6.9m3/s, minimum dependable discharge, Qmin of 4.21m3/s and a selected design discharge Qd of 6.37m3/s. Topographic survey and plant layout showed a head of 3.63m (low head) which is possible f...

Torsional Analysis of Box Culvert Using Vlasov's Theory

ABSTRACT The traditional method, De Saint-Venant theory which was used in the previous analysis of thin-walled structures assumed free warping of all thin-walled structures, which is very rare in engineering. In this research work, Vlasov’s torsion theory which incorporates restraint warping was employed in the analysis of box culvert. The incorporation of restraint warping by Vlasov made the equation for computing angle of twist extremely rigoro...


46 - 60 Of 1075 Results