Carbon Fiber-Reinforced Polymer (CFRP) composite materials have provenvaluable properties and suitability to be used in the construction of new buildings and in upgrading theexisting ones. One of the objectives of this study is to laminate solid timber columns with varying thicknesses of CFRP laminates to check the patterns of the stresses, displac... Continue Reading
This research is aimed at the development of a modified fruit fly optimization algorithm (mFFOA) for the determination of optimized weighting matrices (Q which is a positive definite matrix that penalizes the states and R which is also a positive definite matrix that penalizes the control inputs) of the linear quadratic regulator (LQR) to be used f... Continue Reading
Power system network is designed to operate in a prescribed voltage and frequency for stability and for better power quality. Unexpected contingencies leads to instability related problems in the system. This research develops a sensitivity index based technique with contingency analysis for Unified Power Flow Controller (UPFC) placement for Nigeri... Continue Reading
Deep eutectic solvents (DES) were synthesized from different mole ratios of K2CO3/glycerol at 400 rpm and 353 K for a period of 2 hours toform a homogenous transparent colorless liquid. ThreeDES were successfully formed at the ratio 1:20, 1:30 and 1:40. The DES synthesized were used as catalyst in transesterification reactionof Jatrophacurcasoil wi... Continue Reading
This research was carried out to ascertain the suitability of Osara and Jamata River sand for moulding operation and Ajaokuta Foundry Sand was also tested along with the two sands under the same condition and their moulding properties were compared with that of American Foundrymens’ Society (AFS) Standard. The Jamata River sand sample was collect... Continue Reading
This work presents the design, fabrication and performance evaluation of a multiple sandcrete blocks moulding machine (MSBMM) for simultaneously moulding three of 6 inches sandcrete blocks of size 450 x 150 x 225mm. The machine was designed to operate at speed of 151.8 rad/s, and provided the vibration right through compactor drive shaft (CDS)-ecce... Continue Reading
The search for new engineering materials that addresses ecological and environmental issues is generating renewed interest in utilisation of agricultural wastes to explore value-added application avenues. The aim of the study was to develop and characterise epoxy/borassus palm (Borassus aethiopum Mart.) leaf stalk fibre (BPLSF) reinforced composite... Continue Reading
Polylactide (PLA) is an emerging material mainly because it can be synthesized from renewable resources and is thus environmentally and ecologically safe. It found application in packaging and biomedical. In terms of cost, however, PLA cannot rival the traditional packaging materials. Creative solutions are therefore needed to make PLA a more finan... Continue Reading
This thesis presents the development of smell agent optimization (SAO) algorithm. The developed algorithm consists of three modes (sniffing, trailing and random modes). The evaporation of smell molecules from the smell source is modelled into sniffing mode using the concept of the hydrostatic pressure of gas and positions of molecules. The fitness ... Continue Reading
A ladle is a foundry tool or equipment specially designed to pour molten metal into a prepared mould. The pouring rate or consistency is one of the factors that may lead to a defect in a cast. To avoid casting defects (cold shut and misrun) associated with pouring, there is need for the design of a suitable pouring ladle that will reduce the time t... Continue Reading
The service conditions of many moving steel components require it to possess both hard and wear resistant surfaces witha tough and shock resistant cores. To achieve this, the suitability of pulverized coconut shell charcoal and periwinkle shell for carburizing 0.08%C mild steel was investigated in order to evaluate the carburizing parameters of the... Continue Reading
Soil and Water Assessment Tool (SWAT) and Geographical Information System (GIS) based hydrological modelling was applied to Hadejia River Sub-basin- an integral of the Chad Basin in the Northern Nigeria- to determine the impacts of land use/cover dynamics on the hydrological regime of the sub-basin under the changing climate factors. The study enha... Continue Reading
The suitability of hardwood charcoal and snail shell particles for carburizing mild steel was investigated. All the mild steel specimens were carburized at constant temperature of 920�C from one (1) to five (5) hours at intervals of one hour. The mild steel specimen in the as-received and carburized conditions were all prepared for the following t... Continue Reading
This study investigates the suitability of crushed coconut shell (CCS) and polyethylene terephthalate (PET) as partial replacement of coarse aggregate in concrete. The PET was crushed mechanically to sizes between 0-10mm while the CCS was crushed manually to sizes between 12.7-19.5mm. Various tests were carried out to ascertain the physical and eng... Continue Reading
This research work presents a scheme that identifies line outage and generator outage using contigency analysis and effectively splits the network into a set of predefined islands, with a load shedding strategy to minimise the adverse effect of each outage and to ensure system security. In this research work, Newton Raphson power flow was used for ... Continue Reading