Browsing by Author "Ajiboye, T. K.,"
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Item Hardness and Tensile Properties of Prophylactic Knee Brace Produced from Cow bone and Periwinkle Shell Composites.(Published by Deer Hill Publications, B-19-06 PV8, Platinum Hill Condominium Jalan Melati Utama, 53100 Kuala Lumpur Malaysia., 2019-06-20) Abdulkareem, S.,; Adekaye, T. A.,; Abdulrahim, A. T.; Shuaib-Babata, Y. L.,; Ajiboye, T. K.,; Ahmed, I. I.,; Ibrahim, H. K.,; Adebisi, J. A.; Yahaya, T.Application of reinforced aluminium scrap for the production of prophylactic knee brace (Pkb) particularly with agrowaste materials is rarely available. In this work, hardness and tensile properties of aluminium alloy (Al 6063) straps reinforced with cow bone (Cb) and periwinkle shell (Ps) for the production of Pkb were investigated. The Cb and Ps sourced were cleaned and the Cb was sun-dried for 4 weeks before crushing with Denver laboratory Ball mill (Model: 48-D0500/Q). The Ps was also crushed, sun-dried for 7 days and treated in the oven (Model SDO/225) at 110 oC for 30 minutes to remove moisture. The particle size of 75 µm was used to cast six (6) each of aluminium/cowbone (Al/Cb) and aluminium/periwinkle shell (Al/Ps) composites. The cast aluminium composites of Pkb and original Pkb were investigated for density, hardness, and tensile properties. It was observed that addition of Cb and Ps in the cast Pkb gave a density of 2.68 g/cm3 and 2.60 g/cm3 respectively. The average values of hardness and tensile strength obtained were 41.18 BHN and 135.88 MPa respectively when Ps was added to the cast aluminium Pkb, while addition of Cb gave harness values of 40.45 BHN and tensile strength of 134.63 MPa.Item Quality Characteristics of Commercially Available Brake Pads for Light Weight Vehicles in Nigeria Market.(Department of Civil Engineering, University of Ilorin, Ilorin Nigeria, 2019-06-20) Abdulkareem, S; Ajiboye, T. K.,; Balogun, O. S.,; Ibrahim, H. K.Many experimental studies on the different compositions of brake pads have been carried out with the goal of providing sufficient wear resistance, stable friction and acceptable environmental conditions. However, the variation of the coefficient of friction and performance properties depends on it materials. The presence of different types of brake pads in the Nigerian market today makes it imperative to make a clear distinctions with regards to quality and performance. This study investigate the quality characteristics of commercially obtained brake pad for light weight vehicles with respect to their physical and mechanical properties. The vehicles considered for this study were those with gross weight of between 1500 – 3500 Kg in Ilorin. The brake pads of three different vehicle brands were procured and labelled A, B and C respectively. The properties examined were Brinell hardness, tensile strength, compressive strength, impact strength and coefficient of friction by following standard test in each case. The results obtained showed that at 3000 Kgf, sample A, B and C has Brinell hardness values of 117.15, 106.68 and 103.22 respectively. Sample C has the highest yield force under tensile at 815.03 N followed by sample A at 520.87 N and sample B at 426.51 N. Under compression, sample B has the highest yield force of 32.46 KN while sample A has 17.68 KN and sample C recorded 14.59 KN. The three test samples showed impact strengths of between 69 – 69.17 J with sample B having the highest impact strengths of 69.17 J. The coefficient of friction obtained ranges between 0.32 – 0.34. The results indicate non-uniformity in brake pads composition in the study area and the local authority involved with standardization needs to enforce strict adherence to standards