Department of Mechanical Engineering
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Item DEVELOPMENT AND ASSESSMENT OF PARTICLE REINFORCED ABRASIVE GRINDING DISCS FROM LOCALLY SOURCED MATERIALS(Journal of Chemical Technology and Metallurgy, 2024-09-09) Jamiu Kolawole Odusote; Adekunle Akanni Adeleke; Peter Pelumi Ikubanni; Timothy Adekanye; Adeiza Avidime Samuel; Chinedum OjiManagement of waste materials is a serious concern to researchers and scientists. Waste materials cause health and environmental hazards. Hence, they should be properly managed. The aim of this study is to develop a grinding disc using agricultural wastes (palm kernel shell and snail shell), granite, aluminium oxide, and polyester resin. The particles of snail shell, palm kernel shell, aluminium oxide (abrasive) and granite (friction modifier) were measured in percentages varying between 8 - 29 wt. % and were mixed with 27 wt. % polyester resin (binder), 3 wt. % methyl ethyl ketone peroxide (hardener) and 3 wt. % cobalt naphthalene (accelerator) to produce a grinding disc. The micrograph, hardness, wear rate, and water absorption tests were carried out on the grinding disc samples. The result showed that the composition with the highest palm kernel shell particle content (29 wt. %) had the best values for hardness and wear resistance, making it the most suitable material for grinding discs. The environmentally-friendly palm kernel shell-based discs could be used for soft metals, wood grinding and finishing processes.Item Analysis of an Experimental Digital Read-outs Slider Crank Mechanism(IEEE, 2024-08-15) Jamiu Kolawole Odusote; Adekunle Akanni Adeleke; Peter Pelumi Ikubanni; Qudus A. Siyanbola; Oluwasogo L. Ogundipe; Olayinka O. AgboolaSlider-crank mechanism (SCM) was developed with digital read-outs in this study to make the reading of experimental results more accurate. They are connected by joints and force elements for the conversion of reciprocating motion into rotary motion or vice-versa. A digital protractor (accuracy = ±𝟎. 𝟐) and a digital vernier caliper (accuracy = +0.02 mm) were incorporated as the crank and the slider respectively, while a stainless-steel plate was made the connecting link. The deviation of the slider (displacement) values from the corresponding theoretical values at various angles was determined. The simple harmonic ratio of the analogue mechanism is higher than that of the digital mechanism but the deviations of the slider (displacement) values of the digital mechanism from the theoretical values are quite negligible. The deviations of the analogue system from its corresponding theoretical values are far higher. Based on the result obtained, the digital system is more precise and accurate for experimental studies than the analogue system.Item Advent of Artificial Intelligence in Automotive Engineering(IEEE, 2024-02-29) Adeiza Avidime Samuel; Adekunle Akanni Adeleke; Esther Nneka Anosike-Francis; Temitayo Samson Ogedengbe; Peter Pelumi Ikubanni; Favour Oluwasayo Adeyemi; Jamiu Kolawole Odusote; Matthew Onuoha; Usman ShuaibArtificial intelligence (AI) has long been a topic of interest and with its constant development and growing popularity and functions, it is no surprise that it has made its way into the automotive industry. For ages, people have done research regarding AI in the automotive industry, and with the increasing popularity of this subject, the research only goes deeper. This paper gives an analysis of previous research under different areas which involve AI in automotives, somewhat singling out autonomous vehicles. We also go into the basis of artificial intelligence, as well as highlight a few challenges which face the integration of AI into the automotive industry.Item Advancement in Magnesium Metal Matrix Composites: A Mini-Review of Production Techniques, Properties, and Applications(IEEE, 2024-08-15) Peter Pelumi Ikubanni; Adekunle Akanni Adeleke; Samuel O. Oladimeji; Olayinka O. Agboola; Bamidele T. Ogunsemi; Olatunji P. Abolusoro; Peter Onu; Remilekun R. ElewaThe advancement of research in new engineering materials has led to the development of magnesium metal matrix composites (Mg MMCs). This study critically examined the production techniques, properties, and applications of Mg MCs. Powder metallurgy and casting routes were the two classifications of the techniques for producing Mg MMCs. The mechanical, tribological, corrosion, and bio-compatibility properties of the composites and the application of the Mg MMCs were reviewed. Orowan strengthening mechanism, Hall Petch strengthening mechanism, and Taylor strengthening mechanism were the mechanisms responsible for the improvement of the strength of the composite. The study further highlighted the areas for future studies.Item A Model-Based Design of an Electric Kettle for Nigerian Households(IEEE, 2024-08-15) Nwachukwu Praise; Ibikunle Rotimi; Adekunle Akanni Adeleke; Peter Pelumi Ikubanni; Seun Jesuloluwa; Onyemachukwu ChidinduElectric kettles, essential in Nigerian households is the focus of this paper. It aims to develop and analyse discrete-time and continuous-time models using engineering software. First, a Computer-Aided Design (CAD) model is developed, followed by the comprehensive analysis of the steady-state thermal properties of the model using finite element analysis (FEA). Subsequently, a physical model, with three sub-systems, is developed and subjected to simulation. This study examines both models, scrutinizes the effect of alterations in thermal parameters, and conducts a comparative analysis with an actual kettle. The findings, offer valuable insights into the dynamics of the electric kettle and provide intuitive suggestions for enhancing its efficiency and usage.Item A Review of Rare Earth Ion-Doped Glasses: Physical, Optical, and Photoluminescence Properties(Trends in Sciences, 2024-10-22) Serifat Olamide Adeleye; Adekunle Akanni Adeleke; Petrus Nzerem; Adebayo Isaac Olosho; Esther Nneka Anosike-Francis; Temitayo Samson Ogedengbe; Peter Pelumi Ikubanni; Rabiatu Adamu Saleh; Jude A. OkolieResearchers worldwide have shown significant interest in doping glasses with rare-earth ions. This is particularly intriguing because rare-earth ions are extensively used to enhance the optical properties of host glasses, capitalizing on their unique spectroscopic characteristics due to optical transitions within the intra-4f shell. An in-depth review was conducted on various glass fabrication methods, such as sputtering, solgel, chemical vapor deposition, ion exchange, and direct melt quenching. The study emphasized the physical, optical, and photoluminescence properties of glasses made from glass formers co-doped with rare earth ions. Understanding the interrelationship between these properties is crucial for optimizing material performance across various technological applications. The research highlights the broad applicability of rare-earth-doped glasses in fields like white light emission, photonic devices, solid-state lasers, optical fiber communication, and biomedical applicationsItem Application of Conversion Coatings on Aluminum Matrix Composites for Corrosion Protection(Portugaliae Electrochimica Acta, 2025-02-02) Peter Pelumi Ikubanni; Makanjuola Oki; Adekunle Akanni Adeleke; T. A. Orhadahwe; A. A. Samuel; J. A. Okolie; P. O. Omoniyi; T. C. JenAccelerated corrosion is closely associated with the inclusion of secondary reinforcement particulates in metal matrices, where they are usually present as cathodic sites. This hinders full utilization of composite products for engineering applications. In this study, chemical CC were used to improve MMC corrosion in atmospheric and simulated seawater environments. Comparison between CCC and PPCC performance was done to find a substitute for the former, which contains carcinogenic Cr VI ions. Japanese industrial testing method was used to determine the composite LC/CC samples adhesion characteristics, after a series of exposure regimens. CCC specimens displayed marginal corrosion resistance superiority over their PPCC counterparts. There was little to no pits on the CC substrate compared to the non-coated samples. The CC applied on the substrates prevented the coating delamination. The lacquer remained unpeeled on the substrate, during Japanese industrial testing. This indicates reduced corrosion activities on the substrates.Item Production and Characterization of Hybrid Automobile Brake Pad(LAUTECH Journal of Engineering and Technology, 2024-02-02) Oladejo, O. A.; Ajiboye, T.K.; Asafa, T. B.; Fajobi, M. O.; Ajayeoba, A. O.; Adekunle Akanni Adeleke; Adeoye, O. O.; Olusegun, H. D.; Peter Pelumi IkubanniA brake system is highly imperative for the safe control of an articulated automobile. One of the major components of the automobile system is brake pad which is currently imported into the Nigerian market. This study was aimed at producing brake pads from locally available materials to serve as an alternative to imported pads. Samples of brake pads were produced from a mixture of epoxy resin, kaolin, barium sulphate, steel fibre, fiberglass, silica, alumina, and graphite sourced from local markets. Three samples - A, B, and C – were moulded following the standard practice for brake pad production. The samples were characterized for microstructure, hardness, wear rate, ultimate tensile strength (UTS), and impact strength. The study established that the brake pad made from 16.3% epoxy resin, 13.8% kaolin, 32.6% barium sulphate, 6.5% steel fibre, 10.4% fiberglass, 6.8% silica, 9.2% alumina, and 4.4% graphite performed optimally with a hardness of 4.59 kg/m2. The optimal brake pad had its wear rate lower than other samples after 210 s of load application, an ultimate tensile strength of 3.60 MPa and impact strength of 0.028 J/mm. SEM image of the sample indicates a homogenous distribution of the binder, fillers and reinforcing materials. Compared to sample B, the conventional brake pad had a higher Brinell hardness value of 18,592 kg/m2. The results justified that the developed brake pads have sound tribological property as prominent characteristics. The study recommends the application of the optimally produced brake in automobiles for enhanced eco user friendliness.Item Production of bioplastic films from wild cocoyam (Caladium bicolor) starch(Elsevier, 2024-10-15) Chinaza Enwere; Ikechukwu Okafor; Adekunle Akanni Adeleke; Petrus Nzerem; Khaleel Jakada; Adebayo Isaac Olosho; Peter Pelumi Ikubanni; Prabhu Paramasivam; Ayuba SalihuThis study tackles the pressing environmental challenges resulting from the rapid and ongoing use of conventional plastics by investigating biodegradable alternatives derived from wild cocoyam starch. The bioplastics developed from various formulations, incorporating gelatin, glycerine, vegetable oil, and vinegar, were systematically evaluated for their mechanical, chemical, microstructural and biodegradability properties. The addition of glycerine and gelatin enhanced the moisture content and flexibility of the films while vegetable oil improved water resistance, reducing water absorption. Th sample that contains 3 g of gelatin and 3 ml of glycerine exhibited the best overall performance with a tensile strength of 6.5 MPa and an elongation at break of 77 %. This sample also achieved an impressive biodegradation rate of 70 % within 7 days. Scanning Electron Microscopy revealed a uniform and smooth morphology, while Fourier Transform Infrared Spectroscopy confirmed the presence of key functional groups responsible for the material's performance. These results establish wild cocoyam starch as a promising resource for producing biodegradable bioplastics with considerable potential in various industries, particularly in packaging and agricultural applications. The excellent mechanical properties and biodegradability of the materials along with its natural abundance, offer an eco-friendly solution to the plastic waste problem. The study also opens new avenues for optimizing bioplastic formulations to enhance specific properties like thermal stability and moisture resistance, further broadening their practical applications. This research contributes to the sustainable materials landscape and represents a step toward reducing reliance on fossil-based plastics, advancing the global effort to mitigate environmental pollution.Item A comprehensive review on the similarity and disparity of torrefied biomass and coal properties(Elsevier, 2024-05-09) Adekunle Akanni Adeleke; Peter Pelumi Ikubanni; Stephen S. Emmanuel; Moses O. Fajobi; Praise Nwachukwu; Ademidun A. Adesibikan; Jamiu Kolawole Odusote; Emmanuel O. Adeyemi; Oluwaseyi M. Abioye; Jude A. OkolieThe use of coal for energy generation is facing serious scrutiny because of environmental concerns. As a result, there is a growing global interest in biomass, a renewable and readily available energy source. However, the utilization of biomass comes with significant drawbacks, including its heterogeneity, low bulk density, and calorific value. Biomass also has a low energy content, high moisture, poor grindability, and high volatile matter, which affect its handling, bulk transportation, and storage. Torrefaction technology has been employed in previous works to improve the properties of biomass for subsequent handling and transportation and for low-cost energy generation. Since coal is a promising precursor for energy generation, it is imperative to compare the physicochemical properties of coal with that of torrefied biomass. Therefore, this study aims to conduct a comprehensive comparison between various grades of coal and torrefied biomass. The review revealed that torrefied biomass could replace coal, as its properties are similar to those of coal, except for high-grade coals. The proximate and ultimate analyses of coals (lignite and bituminous) were found to be comparable to various torrefied biomass materials. The fuel ratio (0.5–2.0), and higher heating values (16,100–19,000 kJ/kg) of coal and torrefied biomass were within the range useful for coal-fired plants. Additionally, ash analyses, ash fusion temperature, hygroscopic tendency, functional group study, and microstructural comparison were reviewed in this study. The results from various studies have shown close similarities with only small disimilarities in the fuel properties between coal and torrefied biomass. Therefore, torrefied biomass is proposed as a complimentary feedstock to coal in various applications.