Adebayo Surajudeen ADEKUNLE
@unilorin.edu.ng
Scopus Publications
- Influence of bio-quenchant oil on fatigue life and fracture behaviour of AISI 1541 medium carbon steel during heat treatment
P.O. Omoniyi, P.O. Nwasike, H.K. Ibrahim, A.S. Adekunle, TC. Jen
Advances in Materials and Processing Technologies, 2025 - Development and analysis of friction material for eco-friendly brake pad using seashell composite
Adebayo Adekunle, Mojeed Okunlola, Peter Omoniyi, Adekunle Adeleke, Peter Ikubanni, et al.
Scientia Iranica, 2023
Asbestos has been banned in many countries as a result of its negative effects on the environment and human health. As a result, a human-friendly friction material is required to replace asbestos in brake pads. Hence, the powder metallurgy technique was undertaken to develop friction material from locally sourced asbestos-free materials. Seashell was used as base elements with other additives. The filler material considered had a particulate size of 300 µm - Mechanical and microstructural evaluation of aluminium matrix composite reinforced with wood particles
Peter Omoniyi, Adebayo Adekunle, Segun Ibitoye, Olalekan Olorunpomi, Olatunji Abolusoro
Journal of King Saud University Engineering Sciences, 2022 - Development of methodology for characterization of surface roughness of solid metallic surfaces using oil slippage method
I. O. Ohijeagbon, A. A. Adeleke, P. P. Ikubanni, T. A. Orhadahwe, G. E. Adebayo, et al.
Latvian Journal of Physics and Technical Sciences, 2021
The study employed the phenomenon of friction between liquid droplets and solid metallic surfaces in surface roughness analysis of engineering materials. Five samples of mild steel plate were prepared to different degrees of surface roughness by facing operation. The sample surfaces were analysed to determine the roughness parameters (mean roughness, root mean square roughness, roughness skewness, and roughness kurtosis) and friction coefficient of the surfaces. Oil droplet sliding velocity was determined using the oil slippage test. The friction coefficient of the surfaces increased with increasing roughness parameter which varied from 26.334 µm at friction coefficient = 0.63 to 13.153 µm at friction coefficient = 0.46. The results from oil slippage test showed that the sliding velocity of the oil drop decreased as the friction coefficient of samples increased. At an inclination angle of 30°, sliding velocity varied from 0.51 cm/s at friction coefficient = 0.63 to 0.92 cm/s at friction coefficient = 0.46. Some of the samples exhibited a deviation in the trend of relationship between friction coefficient and sliding velocity which resulted from the variation in peak height of roughness between the sample surfaces. Oil slippage method predicts the surface behaviours of materials based on their surface parameters. - Mechanical properties and microstructural evaluation of heat-treated aluminum alloy using formulated bio-quenchants
Adebayo Surajudeen Adekunle, Adekunle Akanni Adeleke, Peter Pelumi Ikubanni, Peter Olorunleke Omoniyi, Tajudeen Adelani Gbadamosi, et al.
International Review of Applied Sciences and Engineering, 2020
Heat treatment industries require various quenching media to improve the properties of the materials to be quenched. Petroleum based mineral (PBM) oil, a non-biodegradable oil, is popular amongst others quenchants in heat treatment processes. Recently, biodegradable oils mostly in their raw, unblended and unbleached forms have been employed for quenching of various engineering materials. Therefore, the present study examined the effects of some selected bio-quenchants in blended raw (BR) and blended bleached (BB) forms on the mechanical properties and microstructure of solution heat treated aluminum (Al)-alloy. Edible vegetable oil (70% by volume) was blended with 30% by volume of jatropha oil to form the bio-quenchant oils. Another set of bio-quenchants were formed by bleaching the raw oils before mixing so as to reduce the oxidation level and contaminations in the oil. The Al-alloy is solution heat treated at 500 °C and soaked for 15 min in an electric muffle furnace before quenching in the various established bio-quenchants. Results showed that samples treated in blended raw melon (BRM) oil have higher tensile strength of 151.76 N/mm2 while samples quenched in blended bleached melon (BBM) oil have higher hardness value of 61.00 HRC. In accordance to the results obtained the bio-quenchants were found to be effective replacement to the PBM oil. - Comparative analyses of the inhibitive influence of cascabela thevetia and jatropha curcas leaves extracts on mild steel
A. S. Adekunle, A. A. Adeleke, P. P. Ikubanni, O. A. Adewuyi
Nature Environment and Pollution Technology, 2020
The inhibitive properties of the extracts of Cascabela thevetia and Jatropha curcas were comparatively studied on corrosion of mild steel in H2SO4 acid. The extracts of both plants contained active phytochemical constituents such as tannins, saponins, alkaloids, flavonoids, terpenes and phenols which made them useful as good corrosion inhibitors. The extract concentrations were varied from 0.3 to 1.5 g/L during both the gravimetric and gasometric analyses for an exposure time of 7-28 days. The weight loss of the coupon, corrosion rate, surface coverage and inhibitive efficiency was evaluated for both the extracts. The results of the gravimetric and gasometric analyses indicated that inhibitive efficiency increased with an increase in the concentration of inhibitors and the highest was 55.77% for Jatrophas curcas at the concentration of 1.5 g/L. The weight loss was a little lower for Cascabela thevetia (4.36 g) compared to Jatrophas curcas (4.66 g) at the highest exposure time used (28 days). Cascabela thevetia has a better surface coverage (0.68) than Jatropha curcas (0.61), hence, Cascabela thevetia inhibits better for a 7-day exposure time. However, when the mild steel was further exposed for more than 7 days, Jatropha curcas exhibited a better inhibitive property. The highest and least hydrogen gas evolution was obtained at 0.3 g/L concentration (7 minutes) and 1.5 g/L concentration (1 minute) for both Cascabela thevetia and Jatropha curcas leaves extracts, respectively. Based on the results, the utilization of extracts of Cascabela thevetia and Jatropha curcas leaves as replacements for toxic organic inhibitors in industries are recommended. - Effect of copper addition and solution heat treatment on the mechanical properties of aluminum alloy using formulated bio-quenchant oils
Engineering and Applied Science Research, 2020 - EFFECTIVENESS OF BIODEGRADABLE OILS AS QUENCHING MEDIA FOR COMMERCIAL ALUMINIUM
A. Surajudeen Adekunle, A. Akanni Adeleke, P. Pelumi Ikubanni, K. Adekunle Adebiyi, O. Adekunle Adewuyi
Materiali in Tehnologije, 2020 - Recycling of plastics with compatibilizer as raw materials for the production of automobile bumper
A.S. Adekunle, A.A. Adeleke, C.V. Sam Obu, P.P. Ikubanni, S.E. Ibitoye, et al.
Cogent Engineering, 2020
Recycled plastic wastes polyethylene terephthalate (PET), high-density polyethylene (HDPE) and polypropylene (PP) were studied in the presence of Ethylene glycidyl methacrylate (EGMA) copolymer compatibilizer, as raw materials for producing automobile bumper. These plastic wastes were cleaned and dried, then crushed to < 3 mm in size and further dried for 4 h to remove moisture. Crushed samples were weighed in different proportions with varying amount of compatibilizer (5–15 g) and manually mixed. Recycled composite plastic of 150 × 150 × 3 mm in length, width and thickness, respectively, was produced from weighed samples in an injection moulding machine at 150–220oC and pressure of 150 bar. Mechanical tests and morphological observation were carried out on the blend. The mechanical properties were more dependent on EGMA in the blend produced than the variation of the PET, PE and PP. The results showed that the optimum tensile strength (25.48 N/mm2), elongation at break (40.75%), Young’s modulus (1615.96 N/mm2) and impact strength (179 J/m) were obtained when 10 g of EGMA was used with 164: 18:18 g of PET, PEL and PP, respectively. The morphology of the sample examined showed the presence of discrete particles with cracks, cavities and various separations, and they defined the mechanical behaviour of the samples. Compared to some standard materials used to produce car bumper, the recycled blend in this study showed huge potential for its production and thus, the use can help in reducing environmental pollution caused by plastic waste. - A cooling potential of formulated bio-quenchant oils on a cast aluminium alloy material
Journal of Chemical Technology and Metallurgy, 2020 - Production and Testing of Biogas Using Cow Dung, Jatropha and Iron Filins
A. Adekunle, S. E. Ibitoye, P. Omoniyi, L. J. Jilantikiri, C. V. Sam-Obu, et al.
Journal of Bioresources and Bioproducts, 2019 - Development and Performance Evaluation of Portable Liquid Soap Making Machine for Small and Medium Scale Industry
A.S. Adekunle, P.O. Omoniyi, S.E. Ibitoye, E.C. Ogbonna, G.A. Akoh
Nigerian Journal of Technological Development, 2019 - Developmental Design of an Orthopaedic Recovery System
I. O. Ohijeagbon, O. C. Omoragbon, J. O. Aweda, A. S. Adekunle, J. F. Opadiji
Iop Conference Series Materials Science and Engineering, 2018 - Effect of vegetable oil quenchants on the properties of aluminum during solution heat treatment
.K. Odusote, A.S. Adekunle, A.B. Rabiu, and
Journal of Mechanical Engineering and Sciences, 2015 - Effect of quench immersion speed in water on the mechanical properties of C30 carbon steel
Lecture Notes in Engineering and Computer Science, 2014 - Impact of suitable replacement of granite-particles on interlocking tiles
I. O. Ohijeagbon, H. D. Olusegun, A. S. Adekunle, O. S. Adewoye, A. O. Oladiji, et al.
Journal of Engineering Science and Technology Review, 2012 - Development and performance evaluation of manually and motorized operated melon shelling machine using impact technique
A. S. Adekunle, I.O Ohijeagbon, H. D. Olusegun, and
Journal of Engineering Science and Technology Review, 2009
