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Omolayo M. Ikumapayi

Bio: Omolayo M. Ikumapayi is an academic researcher from Afe Babalola University. The author has contributed to research in topics: Ultimate tensile strength & Materials science. The author has an hindex of 14, co-authored 65 publications receiving 492 citations. Previous affiliations of Omolayo M. Ikumapayi include University of Johannesburg & University of Lagos.

Papers published on a yearly basis

Papers
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Journal ArticleDOI
TL;DR: In this article, the sawdust and other biomass materials are mixed in certain proportions, then bound together and palletized to a small blocks called briquettes, which can be used for particle board as well as oil production.
Abstract: Sawdust which is basically considered as a timber-industrial waste that pollutes the environment can become a valuable commodity which is considered in three ways: Manufacturing, Energy and Agricultural utilization. The sawdust is burnt in an updraft gasifier under a limited supply of air to obtain producer gas which is carbon II oxide and hydrogen as main components. The sawdust and other biomass materials are mixed in certain proportions, then bound together and palletized to a small blocks called briquettes. The material was also considered to be composted by mixing it with animal digestion or wood ashes and calcium carbonate to form fertilizers. The sawdust and wood shavings can be used for particle board as well as oil production.

48 citations

Journal ArticleDOI
TL;DR: In this article, a 3D printing scaffold with 5% and 20% carbon apatite (cHA) was micro-analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques.

43 citations

Journal ArticleDOI
TL;DR: Computational analysis of prepared crowned tooth in order to differentiate the possibility of using porcelain material for typical clinical condition and masticatory load by using the three-dimensional finite element method (3D FEM).

43 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated tool wear with the machined parameters and developed a mathematical model using response surface methodology to predict the minimum tool wear in end milling of aluminium.
Abstract: In recent machining operation, tool life is one of the most demanding tasks in production process, especially in the automotive industry. The aim of this paper is to study tool wear on HSS in end milling of aluminium 6061 alloy. The experiments were carried out to investigate tool wear with the machined parameters and to developed mathematical model using response surface methodology. The various machining parameters selected for the experiment are spindle speed (N), feed rate (f), axial depth of cut (a) and radial depth of cut (r). The experiment was designed using central composite design (CCD) in which 31 samples were run on SIEG 3/10/0010 CNC end milling machine. After each experiment the cutting tool was measured using scanning electron microscope (SEM). The obtained optimum machining parameter combination are spindle speed of 2500 rpm, feed rate of 200 mm/min, axial depth of cut of 20 mm, and radial depth of cut 1.0mm was found out to achieved the minimum tool wear as 0.213 mm. The mathematical model developed predicted the tool wear with 99.7% which is within the acceptable accuracy range for tool wear prediction.

39 citations

Journal ArticleDOI
TL;DR: In this article, a detailed explanation of six sigma and lean production methodologies, where they are used in manufacturing, how they work, their benefits and the advancements that have been made thus far are presented.

38 citations


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01 Jan 2010
TL;DR: The Oleo-gum-resin exuded by this tree has been regarded as a sovereign remedy in ancient medicine and has marked antiseptic properties.
Abstract: Balsamodendron mukul (Guggul): The Oleo-gum-resin exuded by this tree has been regarded as a sovereign remedy in ancient medicine. It is a bitter stomachic and carminative and improves digestion. It is quickly absorbed and is excreted by skin, mucous membranes and kidneys and in the course of excretion it disinfects their secretions improves the function and stimulates the activity of the respective organs. It has marked antiseptic properties.

411 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive understanding of the fundamentals of the microstructural evolution during FSW/P has been developed, including the mechanisms underlying the development of grain structures and textures, phases, phase transformations and precipitation.

390 citations

Journal ArticleDOI
TL;DR: In this article, a novel hybrid material bone implant manufacturing through the integration of two materials using additive manufacturing (AM) technology is proposed, which can manufacture high strength biomechanical implants with optimized geometry and mass.
Abstract: In this research, a novel hybrid material bone implant manufacturing through the integration of two materials using additive manufacturing (AM) technology is proposed. Biomimetic application can manufacture high strength biomechanical implants with optimised geometry and mass. The combination of polymers allows a significant leap in the development and production of a great diversity of components and applications of biomaterials. A novel hybrid scaffold with a poly lactic acid (PLA) matrix reinforced with carbohydrate particles (cHA) is analysed using digital surface software in the mass proportions of 100/0, 95/5, 90/10 and 80/20 for application in tissue and regenerative engineering, seeking a higher proposition strength of PLA. Filaments are used to fabricate scaffolds by 3D printing, using the fused deposition method. The frameworks are submitted to bioactivity tests, surface roughness evaluation, apparent porosity and mechanical analysis. Analysis of the microstructure of the composite particle evaluates the 3D surface luminance structure and the profile structure. Cross-sectional views of the specimens are extracted and analysed, and the surface roughness, waviness profile, and Gaussian filter of the structures are observed. In summary the structures are checked and analysed by SEM and EDS where possible, to observe the bioactive behaviour of the materials. The relationship between cHA content and roughness is shown to be proportional. The mechanical properties are shown to be affected by the reduced interaction between the PLA matrix and the cHA particles.

148 citations

Journal ArticleDOI
TL;DR: In this article , a comprehensive review and critical assessment of the existing understanding of electrostatic atomization MQL is provided, which can be used by scientists to gain insights into the action mechanism, theoretical basis, machining performance, and development direction of this technology.
Abstract: Metal cutting fluids (MCFs) under flood conditions do not meet the urgent needs of reducing carbon emission. Biolubricant-based minimum quantity lubrication (MQL) is an effective alternative to flood lubrication. However, pneumatic atomization MQL has poor atomization properties, which is detrimental to occupational health. Therefore, electrostatic atomization MQL requires preliminary exploratory studies. However, systematic reviews are lacking in terms of capturing the current research status and development direction of this technology. This study aims to provide a comprehensive review and critical assessment of the existing understanding of electrostatic atomization MQL. This research can be used by scientists to gain insights into the action mechanism, theoretical basis, machining performance, and development direction of this technology. First, the critical equipment, eco-friendly atomization media (biolubricants), and empowering mechanisms of electrostatic atomization MQL are presented. Second, the advanced lubrication and heat transfer mechanisms of biolubricants are revealed by quantitatively comparing MQL with MCF-based wet machining. Third, the distinctive wetting and infiltration mechanisms of electrostatic atomization MQL, combined with its unique empowering mechanism and atomization method, are compared with those of pneumatic atomization MQL. Previous experiments have shown that electrostatic atomization MQL can reduce tool wear by 42.4% in metal cutting and improve the machined surface R a by 47% compared with pneumatic atomization MQL. Finally, future development directions, including the improvement of the coordination parameters and equipment integration aspects, are proposed.

102 citations