Browsing by Author "Babatunde, M.A."

Now showing 1 - 3 of 3
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    Investigation on effect of material compositions on machinability of carbon steels
    (Journal of Physics: Conference Series, 2019) Abdulkareem, S.; Ogedenbge, T.S.; Aweda, J.O.; Ajiboye, T.K.; Khan, A.A.; Babatunde, M.A.
    Steels are basically classified based on their carbon contents. In view of this, the processing of steels is greatly affected by their composition, particularly their carbon content. This paper reports on the machinability of three different steels with varying carbon contents. The steel samples were sourced from Owode metal market in Ilorin, Kwara State and their percentage compositional analysis was carried out at Universal Steels Limited, Lagos. The steel samples were classified into high, medium and low carbon steels based on their percentage carbon content. The machining condition was wet and the machining parameters used were depth of cut (0.2 – 0.6 mm), feed rate (0.05 – 0.15 mm/rev) and cutting speed (100 - 150 rpm). The experimental runs were designed using Taguchi orthogonal array of Minitab version 16 and the cutting temperature was monitored with a digital thermometer and k-type thermocouple wires. The experimental results were analysed using Minitab 18 with a focus on percentage contribution of various factors affecting surface roughness, chip morphology, cutting temperature and material removal rate. Results show that surface finish is highest in low carbon steel and lowest in high carbon steel. The responses show that machinability of the steel improved with a reduction in carbon content.
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    Production of Automobile Brake Pads from Palm Kernel Shell, Coconut Shell, Seashell and Cow Bone
    (Faculty of Engineering and Technology, Adeleke University., 2021) Popoola, O. T.; Rabiu, A.B.; Ibrahim, H.K.; Omoniyi, P.O.; Babatunde, M.A.; Muhammed, N.; Isiaq, F.O.
    The commercial brake pads made from asbestos are found to be carcinogenic hence, researchers and brake pad manufacturers have diverted attention to the use of agricultural wastes to replace asbestos made brake pads. This study investigated the use of palm kernel shell, coconut shell, seashell and cow bone as base material for the development of automobile brake pads. This work focused on combining the aforementioned agricultural wastes with 45% base material, 30% binder, 10% filler, 10% lubricant, and 5% abrasive. The samples were produced using sieve grades of 150 µm particle size and were compressed in a mould at a pressure of 15MN/m2 and a temperature of 195oC. Results were compared with both commercial asbestos-based brake pad and laboratory formulated palm kernel shell-based brake pad. The results showed that sample S3 which is a combination of palm kernel shell, coconut shell and seashell; and sample S5 which is a combination of cow bone, seashell and palm kernel shell are the best substitute to replace the commercially manufactured asbestos brake pad.
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    Production of Automobile Brake Pads from Palm Kernel Shell, Coconut Shell, Seashell and Cow Bone
    (Faculty of Engineering and Technology, Adeleke University, 2021) Popoola, O. T.; Rabiu, A.B.; Ibrahim, H.K.; Omoniyi, P.O.; Babatunde, M.A.; Muhammed, N.; Isiaq, F.O