93 results on '"Afolalu, Sunday A."'
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2. Analysis of the key factors for small and medium-sized enterprises growth using principal component analysis
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Ongbali, Samson Oyaka, Omotehinse, Samuel Ayodeji, Adams, Collins Ogadi, Salawu, Enesi Yekini, and Afolalu, Sunday Adeniran
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- 2024
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Catalog
3. Development of remote-controlled solar-powered pesticide sprayer vehicle
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Kayode, Joseph Friday, Amudipe, Samuel Olufemi, Nwodo, Chubike William, Afolalu, Sunday Adeniran, Akinola, Adebisi Olayinka, Ikumapayi, Omolayo Michael, Oladapo, Bankole Ibrahim, and Akinyoola, John Olaoluwa more...
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- 2024
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4. Simulation of transient response of PID controller in an automated electro-pneumatic system using a single-acting cylinder in a clinical ventilator
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Amudipe, Samuel O., Kayode, Joseph F., Adaramola, Bernard A., Olatunbosun, Osafehinti J., and Afolalu, Sunday A.
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- 2024
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5. Particle size distribution analysis of carburized HT250 gray cast iron using ImageJ
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Salawu, Enesi Y., Elvis, Asoro O., Ajayi, Oluseyi O., Ongbali, Samson O., and Afolalu, Sunday A.
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- 2024
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6. Human-Robot Co-working Improvement via Revolutionary Automation and Robotic Technologies – An overview
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Ikumapayi, Omolayo M., Afolalu, Sunday A., Ogedengbe, Temitayo S., Kazeem, Rasaq A., and Akinlabi, Esther T.
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- 2023
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7. Ergonomics Postural Risk Assessment and Observational Techniques in the 21st Century
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Ogedengbe, Temitayo S., Abiola, Oluranti A., Ikumapayi, Omolayo M., Afolalu, Sunday A., Musa, Adekunle I., Ajayeoba, Abiola O., and Adeyi, Timothy A.
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- 2023
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8. Ceramics matrix composites for biomedical applications - a review
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Ikumapayi, Omolayo M., Ogedengbe, Temitayo S., Ogundipe, Adebayo T., Nnochiri, Emeka S., Obende, Babatunde A., and Afolalu, Sunday A.
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- 2023
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9. Development of aluminium-tin alloy for high strength application
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Abban, Stephen, Ikumapayi, Omolayo M., Ogedengbe, Temitayo S., Afolalu, Sunday A., Ananaba, Chibuikem, and Ogundipe, Adebayo T.
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- 2023
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10. Investigation and analysis of a sustainable agro-based nanocoating on surface of metallic materials
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Afolalu Sunday A., Ikumapayi Omolayo M., Laseinde Opeyeolu T., Ogedengbe Temitayo S., Jen Tien-Chien, Akinlabi Stephen A., and Akinlabi Esther T.
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Environmental sciences ,GE1-350 - Abstract
In this study, nanotechnology was used to develop a coating from agricultural waste. Banana peels underwent various chemical processes, nanoparticles were developed and tests were conducted to validate it. The metal samples used for coating application were made of mild steel which is used to produce a large percentage of metal parts in the industry and was selected for this research project due to that reason. The metals were cut into 50 mm x 50 mm and 50 mm x 30 mm. The sample coatings included a control coating which was used as the yardstick to know the effects of the nano coating applied which contained various concentrations of nanoparticles showed results that were more favorable than the coatings that were applied without nanoparticles contained in them. Qualitative analysis of the coated metal samples A to G showed that sample E which had 7.24 grams of nanoparticles contained in it had the highest amount of hardness while sample A which was control coating possessed the least hardness amount. The abrasion test of the samples revealed that sample D which had 21.72 grams of nanoparticles contained in it possessed the highest weight of coating before and after the abrasion test more...
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- 2024
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11. Development of a Sustainable Nano-refrigerant using agro-waste (rice husk ash) as a base material for a domestic refrigeration system
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Ikumapayi Omolayo M., Afolalu Sunday A., Laseinde Opeyeolu T., Ogedengbe Temitayo S., Akinlabi Stephen A., and Akinlabi Esther T.
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Environmental sciences ,GE1-350 - Abstract
Silica nanoparticles were synthesized from Rice husk ash (RHA) through the top-down approach production greyish coloured particles. The spectroscopical investigation showed a compositional analysis of 74.6% silicon, 20% oxygen and 5.4% carbon. Microstructural studies indicated an average particle area of 7.8nm2 and average particle size of 4nm. The nanoparticles were dispersed into the lubricant oil of the compressor such that when the refrigerant is dispersed over the compressor, the particles mix with the refrigerant giving the nano-refrigerant mixture. The nanoparticles were dispersed into the mineral oil at concentrations of 0.2wt%, 0.3 wt%, 0.5 wt% and 0.6 wt% and fed into the compressor to combine with the refrigerant in the vapour compression system. The refrigerator was run for 240 minutes for each sample as well as the control sample which was the refrigerant R600a. Performance evaluation was carried out to assess the viability of the developed nano-refrigerant. Generally, an increase in the refrigerating effect compared to the control sample by all concentrations apart from the 0.6wt% by 13, 7.5, and 12.5% and a corresponding increase in the COP by 31, 23 and 35% compared to the control sample for the 0.2 wt%, 0.3 wt% and 0.5 wt% concentrations respectively was recorded. more...
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- 2024
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12. Performance evaluation of African star seed (chrysophyllum albidum) oil as a cutting lubricant in milling of ASTM A36 steel.
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Ikumapayi, Omolayo Micheal., Kazeem, Rasaq A., Ogedengbe, Temitayo S., Afolalu, Sunday A., Ogundipe, Adebayo T., Laseinde, Opeyeolu T., and Akinlabi, Esther T.
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CUTTING fluids ,MINERAL oils ,VEGETABLE oils ,SURFACE finishing ,SURFACE roughness - Abstract
Due to the harmful effects that conventional mineral oils have on human health and the environment, vegetable oils are becoming more and more dominant as cutting fluids in metal-cutting operations. In terms of cutting temperature and surface roughness, this paper examines the comparative advantages of minimum quantity lubrication (MQL) with a cutting fluid based on vegetable oil to fully dry machining and MQL machining with mineral oil during the milling of ASTM A36 steel. MQL machining with African star oil performed significantly better than dry cutting and mineral oil due to a significant drop in cutting zone temperature that enabled favourable chip-tool interaction. The findings also showed that the surface finish improved significantly with the use of African star oil as a lubricant. African star oil can undertake the same tasks as foreign-made lubricants when it comes to the milling of ASTM A36 steel, as evidenced by its efficiency when compared to the common cutting lubricant. [ABSTRACT FROM AUTHOR] more...
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- 2024
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13. Experimental approach to bio-waste nanoparticles suitable for radiator coolant.
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Afolalu, Sunday A., Ikumapayi, Omolayo Michael., Ogedengbe, Temitayo S., Emetere, Moses E., Jen, Tien-Chien, and Akinlabi, Esther T.
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CORNCOBS ,HEAT transfer fluids ,SILICA nanoparticles ,HEAT transfer ,NANOFLUIDS - Abstract
The purpose of this research is to experimentally test the thermo physical properties of the corn cob ash nanofluid as a heat transfer fluid. The experimental procedure involve in preparation of extraction of silica nanoparticles from corn cob ash agro-waste and its performance evaluations. The results obtained from the EDS test shows the dominant constituents of corn cob to be Silica, Oxygen, Aluminium, and Calcium with the highest concentrations of 40.20%, 20.20%, 15.65%, and 10.40% respectively. However, with the use of the chemical synthesis method, silica nanoparticle powder made from corn cob ash was produced (CCA). The generated silica particles ranged in size from 10 to 28 nm, with an average diameter well inside the nanometre range at 18.585 nm. The combination of 'Water, Coolant and Nanofluid (0.0015% Concentration)' gives the maximum heat transfer rate, demonstrating that it is the greatest cooling fluid out of the all the coolants that were experimented. Conclusively, this cooling fluid with the highest rate of heat transfer, 'Water + Coolant + Nanofluid (0.0015% Concentration)', would increase the performance of the car engine cooling system, thereby resulting in less fuel consumption and making it more economically efficient for general uses. [ABSTRACT FROM AUTHOR] more...
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- 2024
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14. Efficiency Analysis of a Developed Industrial Refrigerator Using Liquid Desiccant Cooling as Mode of Operation.
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Afolalu, Sunday A., Ogedengbe, Temitayo S., Katey-Obaa, Godwin K., Ikumapayi, Omolayo M., and Tin, Ting Tin
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ENERGY conservation , *ENERGY consumption , *LOW temperatures , *EVAPORATORS , *REFRIGERATORS , *DRYING agents - Abstract
This research study presents a comparative analysis of the evaporator temperatures in a liquid desiccant refrigerator and a conventional refrigerator. The aim of the study is to investigate the performance and efficiency of the liquid desiccant refrigeration technology and its potential benefits compared to conventional refrigeration systems. Evaporator temperature data was collected over a period of time for both systems, and the results were analyzed to gain insights into their cooling capabilities. Results shows that where the conventional refrigerator's evaporator temperature decreases by 9.2℃, the liquid dessicant evaporator temperature only decreased by 0.6℃. Hence, the liquid desiccant refrigerator demonstrated a slower cooling rate, maintaining higher initial evaporator temperatures, and exhibiting a more gradual temperature reduction with a coefficient of performance of 0.13. In contrast, the conventional refrigerator exhibited a faster cooling rate, achieving lower evaporator temperatures within a shorter time frame. Furthermore, the study underscores the importance of energy-efficient and sustainable cooling solutions in today's context of environmental concerns and energy conservation. Conclusively, although the conventional refrigerator achieves a higher cooling rate at a much faster pace, the liquid dessicant refrigerator with advantages such as improved moisture control, potentially higher energy efficiency and slower temperature reduction indicates a more balanced and controlled cooling process which could boost refrigeration processes if widely adopted. [ABSTRACT FROM AUTHOR] more...
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- 2024
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15. Development of Biodegradable Food Package Using Agro-Wastes.
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Afolalu, Sunday A., Ogedengbe, Temitayo S., Atotuoma, Jeremiah O., Ikumapayi, Omolayo M., and Ting, Tin T.
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FOOD packaging , *COMPRESSION molding , *AGRICULTURAL wastes , *RICE hulls , *POLLUTION , *BAGASSE , *PACKAGING materials - Abstract
The escalating environmental concerns surrounding the massive production and improper disposal of non-biodegradable food packaging materials have led to the urgent need for sustainable alternatives. In response to this demand, the present study aims to model a biodegradable food package utilizing abundant agro-wastes, specifically rice husk, plantain stem, and sugarcane bagasse. The primary objective is to develop a packaging material that not only reduces environmental pollution but also utilizes readily available agricultural residues. Various formulations were tested to optimize the proportion of cooking starch, ensuring maximum binding efficiency while maintaining desirable physical and mechanical characteristics of the packaging material. The resulting mixture was then molded into the desired shape using a suitable technique such as compression molding or extrusion. The mechanical properties, such as tensile strength, flexibility, and impact resistance, were assessed to evaluate the performance of the developed packaging material. [ABSTRACT FROM AUTHOR] more...
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- 2024
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16. Waste pollution, wastewater and effluent treatment methods – An overview
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Afolalu, Sunday A., Ikumapayi, Omolayo M., Ogedengbe, Temitayo S., Kazeem, Rasaq A., and Ogundipe, Adebayo T.
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- 2022
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17. A concise overview of deep drawing in the metal forming operation
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Ikumapayi, Omolayo M., Afolalu, Sunday A., Kayode, Joseph F., Kazeem, Rasaq A., and Akande, Saheed
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- 2022
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18. Performance assessment of varying nanoparticles in a base mineral oil for domestic refrigeration system
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Afolalu, Sunday A., Ikumapayi, Omolayo M., Adeoye, Adeyinka O.M., Bello, Kazeem A., Ogundipe, Adebayo T., and Banjoko, Moses O.
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- 2022
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19. Impact and optimisation of a new paradigm in engineering economics for sustainable manufacturing operations
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Afolalu, Sunday A., Okwilagwe, Osise, Emetere, Moses M., and Ikumapayi, Omolayo M.
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- 2021
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20. Enviable roles of manufacturing processes in sustainable fourth industrial revolution – A case study of mechatronics
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Afolalu, Sunday A., Ikumapayi, Omolayo M., Abdulkareem, Ademola, Soetan, Samuel B., Emetere, Moses E., and Ongbali, Samson O.
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- 2021
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21. Naturally Occurring Radioactive Materials and Heavy Metals in Photovoltaics: Insights into Short- and Long-Term Waste Hazards.
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Emetere, Moses E., Omotoso, Adekunle W., Afolalu, Sunday A., Amusan, Lekan, Jen, Tien C., and Hossain, Khalid M.
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HEAVY metals ,RADIOACTIVE substances ,ATOMIC absorption spectroscopy ,PHOTOVOLTAIC power generation ,HEAVY metal content of water ,LEAD ,ELECTRONIC waste ,ECOLOGICAL risk assessment - Abstract
Global advancement of solar energy and its emerging technologies are good indicators to assess the general response of energy users to clean energy as enshrined in the sustainable development goal (SDG) 7. However, the reality that solar panels and other components would become electronic waste someday and ultimately contribute to chemical hazards in the environment is a source of concern. This study aimed to evaluate the amounts of heavy metals in solar photovoltaic (PV) modules using atomic absorption spectroscopy and estimate the health risks associated with these heavy metals. Six samples of solar PV were collected and evaluated for Chromium (Cr), Cadmium (Cd), Lead (Pb), and Arsenic (As). Using the health risk index (HRI) and the target hazard quotient (THQ), the human dangers presented by the presence of heavy metals were evaluated. The heavy metal content ranged as follows: Pb (6.00–6.25 mg/kg); Cd (0.10–1.25 mg/kg); Cr (8.00–12.00 mg/kg); and As (0.60–1.25 mg/kg). An estimate of the average weight for children and adults was used to calculate the health risk index. The result showed that health risks for children and adults are high with heavy metal concentrations escalating in the order Pb > Cd > Cr > Ar. The THQ in all metals was < 1 in all the solar PV samples, which indicates they do not pose serious health risk concerns in a single panel. However, considering the large number of waste panels, the risk would be significant. Also, it was found that there were naturally occurring radioactive materials (NORM) in the PV modules and their effects are more in the short term. Hence, heavy metals are envisaged as long-term hazards, and NORM in PV modules are envisaged as short-term hazards. Using the EPA dose compliance concentrations (DCC) (EPA-DCC), the radioactive exposures from the selected photovoltaics were proven to be directly dependent on the number of PVs in use and their distance from the PV installations. Several recommendations were made to curb death in the process of pursuing cleaner energy technologies. [ABSTRACT FROM AUTHOR] more...
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- 2024
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22. Condition Monitoring of Farm Machinery, a Maintenance Strategy for a Sustainable Livestock Production: A Review
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Salawu Enesi Yekini, Airewa Innocent, Akerekan Opeyemi Ernest, Afolalu Sunday Adeniran, Kayode Joseph Friday, Ongbali Samson Oyaka, Awoyemi Olanrewaju Olaniyi, and Edun Bose Mosunmola
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maintenance ,condition monitoring ,agricultural production ,failure ,reliability ,Environmental sciences ,GE1-350 - Abstract
The agricultural industry is crucial to the development of the national economy. Inadequate agricultural equipment maintenance could result to a huge economic impact, especially during the harvest period. Thus, this study highlighted on the importance of condition monitoring of agricultural machinery/equipment for enhanced agricultural productions. The study established that adequate condition monitoring of agricultural machineries provides reliability data that will help in the implementation of the integrity of maintenance strategies. Additionally, adequate health monitoring of the advanced machineries will help in improving the efficiency of the machines as well as improving the overall agricultural productivity. This study provides great insight to farmers on the way to monitor and maintain the health of their agricultural machineries. more...
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- 2023
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23. Impact of material selection on the efficiency of the crushing unit low-medium carbon steel
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Edun Bose Mosunmola, Ajayi Oluseyi Olanrewaju, Afolalu Sunday Adeniran, and Nwankwo Samuel Obinna
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material selection ,crushing ,production ,efficiency ,sustainability ,advancement ,Environmental sciences ,GE1-350 - Abstract
The quest for sustainability in feed production industries and crushing machines in agricultural sectors that are more efficient have introduced the use of proper material for hammer material. Around the world, the manufacture of feed from animal waste is expanding quickly, and crushing equipment is now essential to enabling reliability. The issue of early failure of the crushing machine’s main components, however, is a challenge for the feed industries and has a direct impact on the machine’s maintenance, dependability, and running costs. A significant number of technical components have been created during the past decade for industrial applications employing novel materials and cutting-edge technologies through the development of carburisation. As a result, this review offers a concise summary of the most recent analysis of tribological issues related to crushing hammers made of low and medium-carbon steels. Recent studies on innovative crushing material design, improvement in hammer surface engineering, use of case-hardened hammers with a focus on material selection, crushing machine design optimisation, and failure mode analysis are included in the study. Additionally, it will intricate on the heat treatment technology’s present constraints and its future opportunities. more...
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- 2023
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24. Condition monitoring and reliability assessment, an essential tool for Boiler Plant Maintenance - A review
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Salawu Enesi Yekini, Akerekan Opeyemi Ernest, Afolalu Sunday Adeniran, Kayode Joseph Friday, Ongbali Samson Oyaka, Edun Bose Mosunmola, Airewa Innocent, and Awoyemi Olanrewaju Olaniyi
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condition-based ,maintenance ,reliability ,boiler ,efficiency ,availability ,Environmental sciences ,GE1-350 - Abstract
Condition monitoring is an essential technique which is usually deployed to monitor the health parameters and conditions of a boiler plant in such a way that variations or significant changes can like failure can be identified and proffer adequate solutions to it. It is an important aspect of condition-based maintenance which is used in maintaining an equipment according to its conditions. Thus, this study focused on the fundamental principles of condition monitoring which involve the identification and selection of a physical measurement that will show the deterioration stage and the importance of taking the readings at intervals. More so, the study established that monitoring and measurement should focus more at critical components that have high frequency of failure. Thus, condition-based maintenance of boilers will help in improving the ,availability of the boiler. more...
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- 2023
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25. Overview and Impact of Maintenance Process in 4th Industrial Revolution
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Monye Stella Isioma, Afolalu Sunday Adeniran, Lawal Sunday Lukeman, Oluwatoyin Ojo Augustine, and Adeyemi Adewale George
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Environmental sciences ,GE1-350 - Abstract
This study offers a thorough analysis of maintenance procedures and how they affect society in the setting of the fourth industrial revolution which is defined by the use of digital technology across a range of sectors, has altered maintenance procedures and brought fresh ideas for enhancing asset management. The maintenance process, which is essential to guaranteeing the smooth operation of modern industrial systems, is an important facet of this transformation. For a better understanding of the process of maintenance in the Fourth Industrial Revolution and its tremendous effects on many industries, productivity together with operational effectiveness, this article first gave a general review of it. Organizations may use the power of digital technology to optimize maintenance procedures, reduce downtime, and increase asset dependability by taking a pro-active and data-driven strategy. The paper also analyse the development of maintenance procedures, considers how new technologies might improve maintenance effectiveness, and explains how these developments affect industrial productivity, dependability, and sustainability. In fourth industrial revolution context, difficulties alongside potential future advances in maintenance procedures are also covered.. more...
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- 2023
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26. Impact of Industry (4.O) in Automobile Industry
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Monye Stella Isioma, Afolalu Sunday Adeniran, Lawal Sunday Lukeman, Oluwatoyin Ojo Augustine, Adeyemi Adewale George, Ughapu Emmanuel Ikechukwu, and Adegbenjo Abayomi
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Environmental sciences ,GE1-350 - Abstract
The emergence of Industry 4.0, characterized by the fusion of cutting-edge technology and digitization, has significantly altered the automotive industry. Automation, data interchange, and digital technology are combined in Industry 4.0 to produce a more productive and adaptable production environment. This technological advancement is not without its difficulties, such as a call for improvement on cybersecurity to prevent online attacks, up skilling and reskilling of industry employees to ensure high level of competencies, to mention a few. The auto industry is moving toward a new paradigm of connected vehicles and intelligent mobility options outside of the production environment thanks to Industry 4.0. With the integration of (IoT) the Internet of Things, cars have become sophisticated devices that can gather, process, and communicate enormous amounts of data. Sensors placed throughout the vehicle provide real-time monitoring of performance, external conditions, and driver behaviour. This increases safety protections, maximizes fuel efficiency, and paves the road for preventative maintenance. This study aims at developing a workforce framework that will help increase organizational effectiveness within the industry 4.0 paradigm. It also provides recent views on the development of the automobile industry due to Industry 4.0 incorporation, the perceived and current difficulties and possible solutions to identified challenges. more...
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- 2023
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27. Recycling of animal bone as partial replacement for coarse aggregate in lightweight hollow sandcrete blocks
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Edun Bose Mosunmola, Ajayi Oluseyi Olanrewaju, Afolalu Sunday Adeniran, Nwankwo Samuel Obinna, and Fajugbagbe Atinuke Afolabi
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sandcrete ,coarse bone ,production ,partial replacement ,entrepreneur ,curing ,Environmental sciences ,GE1-350 - Abstract
Animal bone waste (ABW) is hazardous to the environment and necessitates a sizable area for disposal. This study aims to employ animal bone waste (ABW) in functionalised compact concrete as a partial substitution for cementitious materials, the source of which are both unswerving and appropriate for substitute preventive solutions promotes the industry’s ecological sustainability by minimizing and reducing the negative impact of the concrete industry due to the explosive usage of raw materials. As a result, this paper examines the impact of using crushed animal bones as coarse aggregates in place of sand and cement in the production of concrete. With an improved step level of 10% through cement mass, ABW was applied at a percentage range of 0 to 40%. Bone’s various characteristics in its fresh and hardened states were looked examined. A Sieve shaker machine was employed to sieve the bone after which the bone was boiled and dried to remove moisture. To evaluate whether the employed aggregates and crushed animal bone were suitable for use in concrete, a physical analysis of each was performed. more...
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- 2023
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28. Development of a nano-hybrid coolant for machining operation
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Afolalu Sunday Adeiran, Ogedengbe Temitayo Samson, Ikumapayi Omolayo Michael, Emetere Moses Eterigho, and Oyebode Oluwadare Joshua
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Environmental sciences ,GE1-350 - Abstract
This study involved the development of a nanofluid and its experimental use during a machining operation for enhancement of the surface profile of a mild steel rod. Silica nanoparticles were made from coconut shell and rice husk using a chemical process, and then disseminated into distilled water to create the hybrid nanofluid. A control sample was used to compare the performance of the created nano machining fluid. The mild steel samples had a better surface roughness when nano machining fluids were used. more...
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- 2023
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29. Evaluation of battery performance for solar mobile phone charger for rural dweller usage
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Emetere Moses E., Akuwudike E.C., and Afolalu Sunday A.
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Environmental sciences ,GE1-350 - Abstract
This research is an initiative to improve the standard of living of rural dwellers and deprived settlements in a semi-urban location where epileptic power supply is predominant. The study is aimed at evaluating battery performance for the construction of a solar-powered mobile charger aimed at improving a steady power supply for electronic devices (phones, tablets, etc.), given the high and increased dependence on such devices in recent times. The solar-powered mobile charger was tested using various batteries available in the Nigerian market to determine the cheapest and most effective device to help rural dwellers. The constructed device was tested via its output voltage, current, time, and temperature. The results were subjected to further analysis by using Matlab and PVeducaction software for presentation and interpretation. The results of the analysis showed an efficiency value of seventy percent (70%) and a standard nominal voltage reading between 3.7 and 4.2 volts (V). The performance of the four batteries used affirmed its basic findings, however, Nickel-Metal Hydride (Ni-MH) batteries and Lithium-ion (Li-ion) metal (Ni-MH) batteries showed stability among the batterires used. The study recommends the commercialization phase of the construction to improve the living standards of rural dwellers and deprived settlements in a semi-urban location. more...
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- 2023
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30. Suitability of Agro-Wastes Based Flux as Enhancement for Welded Joints in Steels – A Review
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Ogedengbe Temitayo S., Alonge Oluwasanmi I., Ikumapayi Omolayo M., Afolalu Sunday A., Bob-Manuel Samuel, Uwaifo Samuel, and Akinlabi Esther T.
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Environmental sciences ,GE1-350 - Abstract
Failure of engineering materials is most often catastrophic but yet avoidable. This possibility has resulted in various studies into possible ways to strengthen engineering materials with quite a lot of opinions surfacing. The rapid development in world population has brought about high demand for agricultural products, which in turn results in daily increase in environmental degradation and pollution, hence their consideration as agro-based flux. This study was a review of approaches to strengthen carbon steels using a few agro waste types (Date seed, Palm kernel shell & Banana peel). The characteristic properties and engineering value of these various wastes have been closely studied. The review shows that Date Seed and Palm kernel shell shows better strength abilities and could enhance steel types better than Banana Peel and is recommended for use. more...
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- 2023
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31. Biogas compression chamber from septic tank: Design and testing
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Emetere Moses E., Agiobu-Alafun T.L., and Afolalu Sunday A.
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Environmental sciences ,GE1-350 - Abstract
Biogas has been noted as a steady rising source of sustainable energy, but very few are aware of its innate potential and how to efficiently harness its energy. So far, issues of sustainability have been solved via the use of human waste, which can never be depleted. The commercialization and adaptability of biogas from human waste depend on the adoption of the usual septic tank and an efficient technology to enhance biogas quality. In this project, the design and construction of an efficient biogas compression system were proposed. This system is meant to compress the biogas for storage and commercial activity. It was observed that the extraction and enhancement chambers of the construction had >60% improvement. It is recommended that further work be carried out on the full automation of the system proposed. more...
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- 2023
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32. Viability of selected agro-waste as case hardening materials for cutting tools – A review
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Ogedengbe Temitayo Samson, Afolalu Sunday Adeniran, Ikumapayi Omolayo Michael, Abdulkareem Sulaiman, Ajimotokan Habeeb, and Emetere Moses Eterigho
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Environmental sciences ,GE1-350 - Abstract
Machining is an indispensable part of production technology with cutting tool. with cutting tool playing key roles in its operations. The demand for more efficient cutting tool increases continuously with technology. Most of the cutting tools in use are imported and the cost of replacement is high. This problem had resulted in series of studies into the development of cutting tools from indigenous materials, particularly agrowastes. This study was a review of the various tool development approaches using various agrowaste types. The challenges and recorded successes as well as gaps in knowledge have also been identified. Summarily, the use of cutting tools developed from steel types that have been case-hardened by agro wastes is a viable alternative that can be explored for use in machining technology. more...
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- 2023
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33. Now and Future Challenges of the Automobile Industry in the Developing World
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Monye Stella Isioma, Afolalu Sunday Adeniran, Lawal Sunday Lukeman, Gisanrin Toluwalope Tomisin, Oluwatoyin Ojo Augustine, and Adeyemi Adewale George
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Environmental sciences ,GE1-350 - Abstract
The automotive sector has fuelled economic expansion in several countries. The automotive industry is changing quickly in the areas of response to shifting consumer tastes, the adoption of stronger government rules, and technology innovation. This study examines the current and future challenges faced by the automotive industry in developing countries and explores strategies for fostering growth and addressing these challenges. The automobile industry in developing countries confronts various obstacles, like infrastructure limitations, environmental concerns, lack of skilled workforce and market competitiveness. These challenges hinder the industrial growth and sustainability. However, there are also promising opportunities and future trends that can reshape the industry, such as electric vehicles, autonomous and connected vehicles, shared mobility services, advanced manufacturing techniques, and sustainable materials. To overcome these challenges and promote growth, several recommendations are proposed. These include: infrastructure development to improve accessibility, skill development programs to address skilled workforce shortage and effective policies. By addressing these challenges and implementing the recommended strategies, developing countries can advance growth, improve sustainability, and create a vibrant and competitive automobile industry. Conclusively, collaboration between governments, industry players, academia, and research institutions are vital for overcoming challenges, and achieving long-term success in evolving automotive landscape. more...
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- 2023
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34. Development and Optimization of Multi Point Cutting Tool from Recycled Steel using Agrowaste as Case Hardening
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Afolalu Sunday Adeiran, Ogedengbe Temitayo Samson, Ikumapayi Omolayo Michael, Emetere Moses Eterigho, and Oyebode Oluwadare Joshua
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Environmental sciences ,GE1-350 - Abstract
This research created a cutting tool made of recycled steel, palm kernel shell and alloy additives. Scrapped crankshaft and rod (100 kg) containing 0.5607% carbon were charged into an electric induction furnace with a maximum temperature of 3000℃ for melting. Before and after melting, the chemical composition of the charged components was determined using a UV-VIS spectrometer. Alloy additives were added in order to meet the carbon and other elements content of high Speed Steel materials. Samples were pulverized with carbon and heat treated. The performance of developed tool was evaluated using wear rate, toughness and micro structural analysis respectively. High proportion of carbide and strengthened martensite were obtained from the microstructure. The tool’s surface hardness and micro-hardness were 76.8 and 47.9 HB, respectively, while that of the control sample’s were 76.3 and 46.1 HB. Minimum wear rate and toughness of the 1ool were 1095x10-8m2/N and 15.01 J, while those of the control sample were 1.127x10-8 Cm2/N and 17 J respectively. more...
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- 2023
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35. Sustainable Manufacturing in Africa: The Pros and Cons- A Pragmatic Review
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Ogedengbe Temitayo S., Ikumapayi Omolayo M., Alabi Ismaila, Abiola Oluranti A., Alonge Oluwasanmi I., Sobowale Adeniyi, Afolalu Sunday A., and Akinlabi Stephen A.
- Subjects
Environmental sciences ,GE1-350 - Abstract
Manufacturing is an essential aspect of every thriving economy. It is a driver that cannot be overemphasized. This is so because production of goods and service is what ensures a continuous growth of the economy. It is therefore imperative to ensure the sustainability of this key tool. This study reviews the various elements of manufacturing, the strengths and constraints of sustainable manufacturing especially in Africa. The study concludes that manufacturing is sustainable provided the needed support from key players is available and can drive an economy to fast development. more...
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- 2023
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36. Impact of Maintenance on Machine Reliability: A Review
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Salawu Enesi Yekini, Awoyemi Olanrewaju Olaniyi, Akerekan Opeyemi Ernest, Afolalu Sunday Adeniran, Kayode Joseph Friday, Ongbali Samson Oyaka, Airewa Innocent, and Edun Bose Mosunmola
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maintenance ,reliability ,preventive ,proactive ,predictive ,strategy ,cost-benefit ,Environmental sciences ,GE1-350 - Abstract
This review investigates the impact of maintenance methods on machine reliability, focusing on their relationship with overall performance, durability, and availability. It emphasizes the importance of proactive maintenance, such as preventive maintenance, to identify and treat potential issues before they become significant failures. The review also examines the effectiveness of various maintenance procedures in enhancing machine reliability, examining the cost-benefit ratio of maintenance programs and the potential savings gained through improved reliability. The review highlights the role of maintenance methods in limiting risks and enhancing performance, emphasizing the importance of proper maintenance practices in ensuring smooth operations and reducing downtime. more...
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- 2023
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37. Tungsten inert gas (TIG) and metal inert gas (MIG) welding applications - critical review
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Lawal Sunday L., Afolalu Sunday A., Jen Tien-Chien, and Akinlabi Esther T.
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Environmental sciences ,GE1-350 - Abstract
The review focused on the applications of tungsten inert gas a (TIG) metal inert gas (MIG) welding processes. Each of the welding process was critical studied to understand the operations and the need to maintain safety and reliable weld with adequate mechanical properties. In addition, the various applications in the aerospace, aeronautic, automotive and food packaging industries were critically highlighted. However, there potentials as well as problems highlighted have been critically reviewed and reported especially porosity which usually result into hole defects at the weld joint as well as plastic deformation due to the frictional heat induced have been reported in this study. Furthermore, the study further recommended friction stir processes integrated with TIG/MIG welding as an alternative method that will solve the problems associated with fatigue behaviour of welded joint. Thus, the study provided potential information to all stakeholders especially the professional welders on the need-to-know which method is applicable to aluminium alloy welding more...
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- 2023
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38. Overview of the impact of heat treatment methods on corrosion performance of metals and alloys
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Lawal Sunday L., Afolalu Sunday A., Jen Tien-Chien, and Akinlabi Esther T.
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Environmental sciences ,GE1-350 - Abstract
The increasing demand for high entropy alloys and the need to develop high-strength steels for structural applications has led to the various applications of heat treatment in the metallurgical field. However, numerous mechanical integrities of heat treatment must be satisfied to ensure that the desired property is not only obtained but also achieved sustainably even while the material is under the application in a degraded environment. Thus, the study did an extensive review of the different heat treatment methods and their benefits. The study discussed the purpose of heat treatment, types of heat treatment, and their effect on the corrosion behaviour of the substrate. This provides potential information on the basics of heat treatment to further understand its impact on the corrosion performance of engineering materials. more...
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- 2023
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39. Optimization and Analysis of Female Foot Anthropometry
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Monye Stella I., Afolalu Sunday A., Kayode Joseph F., Lawal Sunday L., and Emetere Moses E.
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Environmental sciences ,GE1-350 - Abstract
The dynamic nature of the population makes it necessary to have reliable and updated data on the human foot dimensions. Many factors are responsible for the different forms and structures of the human foot, such as age, gender, nutrition, and genetic composition, among others. This study was carried out to optimize and analyse the various foot dimensions of the female subjects. A total of 200 female subjects participated willingly in the study, and 27-foot measurements were obtained. The results revealed the mean foot length to be 24.7cm with an SD of 1.2 while the mean foot breadth was obtained as 9.3cm having an SD of 0.6cm. The mean obtained was 58.7kg having a standard deviation of 12.5. From the findings, it can be concluded that a statistically significant correlation exists between foot length and body weight (p more...
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- 2023
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40. The Development of Tribology in Lubrication Systems of Industrial Applications: Now and future impact
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Adetunla Adedotun, Afolalu Sunday, Jen Tien-Chien, and Ogundana Ayodele
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Environmental sciences ,GE1-350 - Abstract
Over the past 25 years, natural resources have been used up quickly, causing significant damage and contamination to the planet which is earth. Tribology, a new technology for keeping power and parts running, supported extremely fast and efficient coal and oil-powered machinery throughout history. Many different kinds of resource reserves, like those for power and parts, will be gone in a century. Revolutionary zero-emission and durability technologies are in high demand all over the world in order to create new, truly healthy and long-lasting lifestyles for humans and other living things in a symbiotic way. Tribology is expected to expand its technological innovation in order to support a new industrial trend and meet the requirements of the sector. At the moment, the primary factors influencing engine development are cost, performance, governmental requirements, and consumer requirements. In a few instances, the requirements are linked to tribology. For engines to last longer and be more reliable, tribology advancements that reduce friction and increase wear resistance will be crucial. The components under scrutiny are a part of the heavy-duty diesel engines’ valvetrain mechanism. The fuel injector places a lot of strain on the injection cam, making it one of the camshaft’s most problematic components. Lubrication plays a crucial role in avoiding cam failure caused by wear. The cam and roller contact, in any case, has shown to be one of the most provoking tribological plan challenges to handle. For lubricated contacts, the type and amount of wear are significantly influenced by the degree of separation between the surfaces. The term “specific film thickness” refers to this degree of separation and measures the degree to which asperities interact with one another in the lubricated contact. In order to predict lubrication regimes and, consequently, identify the injection cam’s likely wear zones, this paper focuses on measuring the oil film thickness in the cam-roller contact and other machine parts that follows. The results of the experiment (the observation of worn cam surfaces) are then confronted. In the near future, a multivariate analysis will be used to ascertain how the various parameters affect oil film thickness. The following stage will primarily focus on modeling injection cam wear, which will also include quantifying relationships between wear and a specific film thickness. more...
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- 2023
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41. Influence of Varying Grain Size & Microstructural Constituents on the Corrosion Rate of Steel- An Overview
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Lawal Sunday L., Afolalu Sunday A., Jen Tien-Chien, and Akinlabi Esther T.
- Subjects
Environmental sciences ,GE1-350 - Abstract
Variation in grain sizes via different approaches affects steel’s microstructural properties and corrosion performance. Hence, there is a tendency for internal stress, strain, and texture in the alloyed material. This study established that grain refinement does not necessarily change the corrosion rate, especially for coarse grain size. However, it increases when the refined grain size is deployed into the material. However, the reason for the variation in the corrosion performance behavior of the two types of grains lies in the type of experimental set-up and its application. Subsequently, it was established in this study that the mechanical and microstructural performance of steel depends heavily on the type of grain boundaries. Thus, refined grain boundaries help as surface asperities in materials which eventually improves the microstructure and, most importantly, its corrosion performance in a particular medium. more...
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- 2023
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42. An overview of material removal processes and its industrial application
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Tukuru Oweibo I., Kayode Joseph F., Afolalu Sunday A., Ayodeji Noiki, Lawal Sunday L., Banjoko Olusola M., Monye Stella I., and Emetere Moses E.
- Subjects
metal removal ,materials ,metal processing ,industries ,Environmental sciences ,GE1-350 - Abstract
This paper provided an overview of material removal processes and their industrial applications. Materials perform very important functions industrially owing to their mechanical properties and nature. The essence of material removal processes is to formulate the structural features required for a product to perform to the specification of its intended applications. Unfinished castings can be modified through the removal of materials to make them meet design requirements and also a group of shaping processes that involve removing unwanted surplus material from a starting workpiece to bring the remaining piece closer to the desired shape. Additionally, selective material removal can be used to transform generic castings into one-of-a-kind finished goods. Common castings can have unique hold patterns, flanges eliminated, wall thicknesses decreased, surfaces flattened, and other design characteristics added by removing unneeded material, resulting in distinctively diverse final products. In contrast, casting and molding operations are frequently substituted with material removal techniques. Materials removal may end up being the sole viable option when the issues related to cast form processing concerns become overwhelming (often based on cost-effectiveness). more...
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- 2023
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43. A Brief Study into Renewable Energy Technologies
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Ikumapayi Omolayo M., Ogedengbe Temitayo S., Laseinde Opeyeolu T., Kazeem Rasaq A., Afolalu Sunday A., Akinlabi Stephen A., and Akinlabi Esther T.
- Subjects
Environmental sciences ,GE1-350 - Abstract
The massive increase in energy consumption, especially over the past several years, has raised fears that the world’s fuel and other resource reserves would be drained in the coming years. Over the years, low-cost, long-term energy has been viewed as the foundation of any country’s social and economic success. Nonetheless, in recent decades, a bigger section of the population of developing economies has had limited access to inexpensive and sustainable energy, contributing greatly to these countries’ poor economic and social growth. This study was therefore a review of the various sources of energy and their applications. more...
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- 2023
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44. A concise review on the Suitability of Nano-Refrigerants for Residential Refrigeration Systems (RRS)
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Ikumapayi Omolayo M., Ogedengbe Temitayo S., Laseinde Opeyeolu T., Kazeem Rasaq A., Afolalu Sunday A., Ogundipe Adebayo T., Akinlabi Stephen A., and Akinlabi Esther T.
- Subjects
Environmental sciences ,GE1-350 - Abstract
Nanoparticles have recently attracted huge attention as an engineering alternative in various fields. This is not unconnected with its established ability to perform better when used to replace some conventional systems or used as an enhancement for the system. Hence, this study reviewed the viability of nanofluids developed from nanoparticles as a possible replacement for conventional refrigerants available. In this review, focus was placed on refrigerants and refrigeration types, Nanoparticles and Nanofluids, Synthesis, Characterization and properties of Nanoparticles and finally on Nano-refrigerants and their viability. Conclusions were reached based on findings of the review. more...
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- 2023
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45. An overview of nanotechnology and its application
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Omietimi Henry B., Afolalu Sunday A., Kayode Joseph F., Monye Stella I., Lawal Sunday L., and Emetere Moses E.
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nanotechnology ,application risk ,toxicity ,remediation ,nanoparticles ,Environmental sciences ,GE1-350 - Abstract
Numerous advantages of nanotechnology depend on its capacity to modify materials at incredibly small scales to attain certain features that would significantly improve the materials science toolset. Considering the molecules and interacting groups of molecules in connection to the bulk macroscopic qualities of the material becomes necessary when controlling the underlying molecular structure, which provides control over the macroscopic chemical and physical properties. Physiological and medical applications necessitate both materials apparatus with a high degree of specificity to communicate with the body on a molecular (or subcellular) level. This may result in specialized clinical uses for cells and tissues that aim to acquire the most therapeutic results possible while limiting negative effects. The applications and main scientific and technological facets of nanotechnology are explained in this overview, along with some of its potential medical uses more...
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- 2023
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46. The Advances of Tribology in Materials and Energy Conservation and Engineering Innovation
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Adetunla Adedotun, Afolalu Sunday, Jen Tien-Chien, and Ogundana Ayodele
- Subjects
Environmental sciences ,GE1-350 - Abstract
Tribology has been significantly contributing to materials, energy conservation and engineering innovation. This paper elaborates the development of tribology considering in detail in energy factor, tribological role of efficiency in the society by introducing lubricants which reduces the effective friction while moving the mass which significantly improves overall efficiency of the process all though it was primitive. The objectives of the study of The American Society of Mechanical Engineers (ASME) are working to expand energy conservation, particularly through tribology, by doing things like evaluating the realistic effects of tribological innovation on conserving energy and trying to promote advanced energy technologies, identifying fields the application's location of new or existing Knowledge of tribology is anticipated to result in significant direct or indirect benefits, and so on. The strategy focuses on fluid film and rolling element bearings, consistently sophisticated metal processing, wear and friction reduction, variable power transmission, sealing technologies, automobile engines, and energy technologies. Additionally, the potential savings for various areas are detailed, as is a summary demonstrating the advantages that may be obtained with cutting-edge industrial machinery and processes, and comparing the prospective cost savings with the benefits ratio of the many key program features. road transportation for increasing energy efficiency. It was regarded as the most appropriate and advantageous aspects of tribology at the time to increasing productivity. Since then, numerous studies have focused on the study of industry-based machine and method-specific materials. Also, continuous variable transmissions are now found in many automobiles to enhance vehicle efficiency. Some future challenges were also looked at to plan and see how they can be tackled. The implementation of next level materials in different aspects of technology can lead to growth in the efficiency, quality of engineering parts and machines. This paper is a summary of the improvement in high performance materials both inorganic and organic based. It involves thin hard coverings of their growing importance in tribological improvements for tribo- engineering implementations are looked at and studied. Results from research concerning ceramics and ceramic properties, polymers and polymer properties as well as hard coatings and show the friction and wear attributes and their potential implementation for tribo- engineering. Greasing and friction have a strong relationship with wear. The study of these three topics is essentially what tribology entails. It deals with moving, interacting surfaces in science and technology. To better regulate friction and wear, hard or soft film coating, alloying, and composite structures have all been enhanced. It is accomplished by enhancing the lubricity and wear life of materials and surfaces using novel, modified lubricants and ideas that have been put to the test in challenging tribological applications. The development of new generations of self-lubricating coats with multilayered architecture due to recent advances in thin film deposition methods treatments. The field of tribology is crucial to lowering the levels of emissions from various industries because it is being used to cut down on the amount of unnecessary energy used by mechanisms. Understanding the functions of friction and wear between two surfaces that come into contact has been the domain of tribology for many decades. They have applied this knowledge to make mechanisms more energy efficient by only using what is necessary to power them and reducing the amount of energy lost through wear and friction. more...
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- 2023
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47. The Roles of Surfactant in Tribology Applications of Recent Technology: An overview
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Adetunla Adedotun, Afolalu Sunday, Jen Tien-Chien, and Ogundana Ayodele
- Subjects
Environmental sciences ,GE1-350 - Abstract
In managing friction, wear, and lubricant qualities such as emulsification, demulsification, bio resistance, oxidation resistance, rust prevention, and corrosion resistance, surfactants play a crucial role in tribology. This is an important topic for the development of new materials and gadgets, particularly those created at the Nano-scale. The tribological characteristics of cutting fluids, lubricant performance in relation to steel surfaces, bio lubricants, and novel materials and approaches to friction and wear reduction will all be covered in this most recent edition. Numerous industries place a high priority on surface science and tribology. Almost all consumer and industrial products are manufactured and used with the aid of sophisticated surface and tribological knowledge. Amphiphilic molecules are those that function as surface-active agents or surfactants. Their tails are hydrophobic while their heads are polar, or hydrophilic. They are dispersible in both water and organic solvents. This article introduces surfactants’ nature and physical traits with a focus on their importance in modern science and technology. The primary property of surfactant molecules is the ability to self-assemble into micelles, which gives us a way to apply surfactants. The study of the surfactants results in a number of practical application areas, including food, health and personal care goods, biological systems, mineral and petroleum processing, and even nanotechnology. The organisms, food manufacturing, crop protection, personal care products, mineral and petroleum processing, and other practical application areas serve as examples of what these in turn give rise to a range of operational application domains. more...
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- 2023
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48. Microstructural and Strengthening properties of TIG and MIG welding- An Overview
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Lawal Sunday L., Afolalu Sunday A., Jen Tien-Chien, and Akinlabi Esther T.
- Subjects
Environmental sciences ,GE1-350 - Abstract
The study focused on the standalone TIG and MIG welding and the combined effect, emphasizing the microstructural properties and strength of the welded joint, especially the heat-affected zone. The literature study revealed that both welding techniques and their combination have full penetration in terms of the weld, and the HAZ for TIG-MIG has a larger width in comparison with TIG and MIG. TIG-MIG joints usually demonstrate ductile fracture compared with standalone MIG or TIG welded joints. However, it is characterized by adequate properties like tensile strength compared with the TIG and MIG welding processes. In addition, a comparison between the TIG-MIG techniques and the traditional MIG welding revealed a refined appearance in the joint, as revealed by several microstructures of the joints. more...
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- 2023
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49. Application and impact of tribology in energy-an overview
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Kayode Joseph F., Afolalu Sunday A., Emetere Moses E., Monye Stella I., and Lawal Sunday L.
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tribology ,energy ,application ,friction ,wear ,Environmental sciences ,GE1-350 - Abstract
The use and effects of tribology in the field of energy are the subjects of this term paper. By calculating how energy use, economic output, and pollutants are all impacted by friction and wear, it discusses how tribology can be used to reduce the amount of unnecessary energy used by mechanisms, which is important in reducing the number of emissions produced by different industries. In turn, this enables industries including transportation, energy, mining, and paper production to reduce their overall energy use and emissions. Additionally, since the effect of friction cannot be directly estimated in the mining industry since it is less developed, we analyze the effect of wear in the mining industry by computing the friction loss as a component of the overall energy consumption looking at the downtime in materials, the overall number of mines in the world, the quantity of energy used the mining and the equipment’s life expectancy. This report also discusses current developments in novel materials, lubricants, and design modifications that have the potential to cut energy losses by 18–40%, primarily due to friction and wear. Up to 8.7% of the world’s total energy use and 1.4% of GDP might be saved (GNP). more...
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- 2023
- Full Text
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50. An overview of material removal processes and its importance
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Omietimi Henry, Afolalu Sunday A., Kayode Joseph F., Monye Stella I., Lawal Sunday L., and Emetere Moses E.
- Subjects
material ,processes ,feed ,speed ,depth of cut ,Environmental sciences ,GE1-350 - Abstract
Good surface finishing, quality, and maximizing metal removal are characteristics feature of machining operation. The process variables affect the product’s surface roughness and rate of metal removal. Proper management of the process variables makes it easier to lower machining costs and enhance product quality. In order to get the best product, extensive research has been done previously to optimize the procedure specifications in any machining process. This paper studies how important the material removal process is, its benefits, and its relevancy in the manufacturing industries. The most recent turning process research uses the Response Surface Methodology (RMS). Process variables including feed, cutting speed, and depth of cut work well. In most circumstances, a technical need for mechanical products, the surface profile, and the roughness of a machined workpiece are two of the most significant product quality features. The necessary surface quality must be obtained for a part to function as intended. Finding a simple solution and a completely reliable approach is crucial due to the surface quality mechanism’s process dependence and the various uncontrollable elements that affect relevant phenomena. more...
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- 2023
- Full Text
- View/download PDF
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