Department of Mechanical Engineering

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    SCREW ACTUATED FOLDING CRANE
    (Federal Republic of Nigeria, Federal Ministry of Industry, Trade and Investment, Commercial Law Department, 2023-08-01) Olukayode, O.
    A workshop screw actuated folding crane is hereby presented. Crane is indispensable equipment in engineering workshop for lifting and lowering of heavy machine components. Proprietary cranes as currently available in the market employ hydraulic pump/ram as the lifting device in the crane. Though possessing its own merits, hydraulic pump/ram requires intensive and regular maintenance, the systems often requires parts with a very high degree of precision; a small leak in the hydraulic pipeline can be catastrophic to the transfer of power and can cause workshop accident. Also preparing the crane for storage pose is a dangerous task since it requires detachment and moving of heavy crane parts to achieve. Hence this invention solved the two aforementioned challenges by replacing the hydraulic pump with a screw actuator device and by providing a mechanism for folding the in storage pose in a safe manner. It was so design as to be easy to fabricate using existing crane manufacturing capability, and with cost effectiveness in mind when compared with the current versions available in the market
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    Demonstration of Power Factor Improvement on Wind Energy Conversion Systems using Wind Turbine Emulator
    (Nigerian Society of Engineer Technical Transaction, 2016-03) Olukayode, O.
    Effect of reactive power compensation in the operation of wind energy conversion systems is demonstrated in this study using a laboratory scale wind turbine emulator. the emulator is developed to provide a laboratory level teaching aid on wind power based autonomous electric micro-grid technology. Resulting from it drawing reactive power from the host grid, the emulator operates at a low power factor and this is corrected using a capacitor-based reactive power compensation scheme. The improvement in the power factor of the lab-grid, using the compensator, shows that a characteristic behavior of real wind turbine is perfectly replicated by the emulator. The emulator is thereby validated for adoption as a laboratory level demonstration and instructional facility in the teaching of wind energy conversion technology systems.
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    Optimization and modeling of process parameters on the yield of enhanced pyrolysis oil during co-pyrolysis of cassava peel with polystyrene
    (Environmental Challenges, 2021-10) Olukayode, O.
    The co-pyrolysis of cassava peel (CP) and a synthetic waste, that is polystyrene (PS) has been investigated to optimize the yield of biofuel with improved properties. The main and interaction effects of process variables (temperature, feedstock ratio, and pyrolysis time) on the yield of pyrolysis oil were modeled and the optimal condition for enhanced pyrolysis oil yield was determined using response surface methodology by employing the central composite design matrix. A model equation was generated using the data obtained and the significance of the model was investigated using analysis of variance to determine if the fit of multiple regressions was significant. Some physical properties of the pyrolysis oil at the optimum condition were determined to investigate the suitability of the pyrolysis oil as a fuel source. From the statistical analysis, the study concluded that the feedstock ratio has the most significant effect on the yield of pyrolysis oil.
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    Numerical Modelling and Optimization of the Surface Qualities of Laser Cladded Ti-6Al-4V Alloy
    (Lasers in Manufacturing and Materials Processing, 2023-12-26) Sanyaolu Olufemi
    Ti6Al4V alloy is one of the most widely utilized engineering metals, but it has a reduced hardness for high-temperature abrasive applications. In order to modify the surface of a Ti6Al4V alloy plate, a Cobalt-Nickel (Co-Ni) powder combination with increased hardness and corrosion resistance was used during the laser cladding pro cess. For optimal efficiency, the Co proportion of the powder was modified between 30, 50, and 70 wt% respectively. The scan speed and laser power of the operation process were modified between 0.6, 0.9, and 1.2 m/s and 700, 800, and 900 W respectively. The response properties examined include; microhardness of the coat ing, surface roughness, and clad depth. Response surface methodology was utilized in the experimental design, response property modeling, and process optimization respectively. The statistical analysis revealed that the input variables had significant effects on the response properties and that the trend of the responses depended on the interaction pattern between the input variables. The developed numerical mod els were validated for property prediction. It was noted that the optimization pro cedure and confirmation experiments produced response properties with marginal error. The optimal input combination for producing the balanced performance of the Co-Ni coating on the Ti6Al4V alloy substrate yielded 70wt.% Co proportion, 0.86 m/s scan speed, and 900 W laser power respectively. Keywords Cobalt-Nickel coatings · Laser cladding · Numerical models · Optimization · Ti6Al4V surface treatment
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    Simulation of load-sharing in standalone distributed generation system
    (IOP Publishing, 2018) Olukayode, O.
    This paper presents a study on load-sharing among the component generating units of a multi-source electric microgrid that is operated as an autonomous ac supply-mode system. Emerging trend in power system development permits deployment of microgrids for standalone or stand-by applications, thereby requiring active- and reactive power sharing among the discrete generating units contained in hybrid-source microgrids. In this study, therefore, a laboratory-scale model of a microgrid energized with three renewable energybased sources is employed as a simulation platform to investigate power sharing among the power-generating units. Each source is represented by a source emulator that captures the real operational characteristics of the mimicked generating unit and, with implementation of reallife weather data and load profiles on the model; the sharing of the load among the generating units is investigated. There is a proportionate generation of power by the three source emulators, with their frequencies perfectly synchronized at the point of common coupling as a result of balance flow of power among them. This hybrid topology of renewable energy-based microgrid could therefore be seamlessly adapted into national energy mix by the indigenous electric utility providers in Nigeria.