Department of Mechanical Engineering

Permanent URI for this community

https://ir.unilag.edu.ng/handle/123456789/3475

Browse

Browsing Department of Mechanical Engineering by Author "Adelaja, A. O."

Now showing 1 - 2 of 2
  • Item
    Open Access
    Design and development of waste sorting machine
    (Scholarlink Research Institute, 2011) Ojolo, S. J.; Adelaja, A. O.; Orisaleye, J. I.; Kilankko, O.
    Nigeria is yet to develop a comprehensive scheme which is required to solve the current and persisting problem of waste management in the country. Whereas the crude methods of sorting wastes practiced may be efficient, it wastes useful time; hence the need for a mechanized sorting machine. An attempt has been made to develop a waste sorting machine, which is conceptualized to sort wastes into light materials, ferrous metals and other heavy materials. The machine is designed with the major components being the fan, the belt conveyor and the magnet. Tests carried out on the machine successfully classified wastes into light materials and heavy materials with inability to sort ferrous metals. Samples of wastes tested weighed 1.15kg and 3.53kg. The wastes consisted of an average of 32% of light materials and the time to sort the waste was 65 minutes per unit mass. This machine separates light materials such as paper, nylon, textile and heavy materials similar to nylon, ferrous and non ferrous metal, glass and paper sorted by the machine developed by Falayi et al. (2007) and the machine designed by Adzimah and Anthony (2009).
  • Item
    Open Access
    Development of a High Speed Abrasive Cutting Machine
    (Faculty of Engineering, University of Lagos, Nigeria, 2010-09) Ojolo, S. J.; Orisaleye, J. I.; Adelaja, A. O.
    A high speed abrasive cutting machine was designed and developed. The abrasive wheel of 4mm thickness was used and the speed was 2500 rpm. It is driven by an electric motor having a power of about 3.67 kW. Tests results on the machine showed that it can cut 25mm and 60mm mild steel rods in 7.5s and 21.3s respectively; 25mm and 60mm stainless steel rods in 15.3s and 136.7s respectively. It was discovered from the tests that depending on the length of cut and material being cut, the high speed abrasive cutting machine was more efficient, in terms of cutting time, than the power hacksaw. The grinding/wear ratio was also dependent on the material being cut and the length of cut.