MECHANICAL ENGINEERING TOPICS

​​​BACKGROUND OF THE STUDY

Because of its contribution to national economic development, competitiveness, and improved living standards, innovation has become a fundamental concern for all businesses and governments. It's a complicated phenomenon with a wide range of inputs and outputs that have varying effects on firm, sector, and national performance. There is no one, comprehensive definition of innovation; it can encompass both technological...

ABSTRACT

The heat treatment of wood is an environmental friendly method for wood preservation. This process improves wood resistance to decay and its dimensional stability. In this study, the physical properties of White Afara wood( Terminalia superb) such as density, moisture content and shrinkage were investigated as well as mechanical property such as compression strength. Woods specimen that had been conditioned at 65% relative humility and 20 ± 2ºC temperature were...

ABSTRACT

Nowadays varying degrees of road crashes have been recorded from both developed and developing nations of the world. Crashes especially those that involve loss of lives around the world and in particular in developing countries is alarming. The existing solution is in-vehicle accident detection system, which is expensive. In this research work, a less expensive and system that can be widely used to reduce the time to report and respond to vehicle crash was developed. The sy...

ABSTRACT

This thesis explore the effects of wood dust particle size distribution and contents on the functional properties of wood plastic composites WPCs prepared from virgin high density poly-ethylene (vHDPE) and dilute sodium hydroxide (NaOH) treated African Copaiba Balsam (Daniella oliveri) wood dusts via compression moulding technique. Changes in the structure and the properties of WPCs resulting from variation in daniella oliveri wood dusts particle size distribution and conte...

ABSTRACT

Downdraft gasifier is one of the equipment that have been employed in biomass gasification for syngas production which is used as gaseous fuels and chemicals. The quality of the produced syngas depend upon the operating conditions of the gasifier. In this research, a counter flow heat exchanger was fitted to the air inlet of a downdraft gasifier in order to extract heat from the produced high temperature syngas and used to preheat the gasifying agent (Air) before being intr...

ABSTRACT

The journal bearing demonstration rig is an apparatus which is used to study how pressure would vary around the section of a journal bearing at various speed of the shaft and loading conditions. The design of the journal bearing was done by the use of standard design procedures carefully stated within this work. The frame, the journal bearing, the journal shaft, the base plate and all relevant components of the apparatus were designed. Other parts not constructed were procu...

ABSRACT

Some physical and mechanical properties of two Nigerian beniseed accessions (Yandev-55 and E8) were determined at 5 moisture content levels of 5.3, 10.6, 16.1, 22.4, and 28.3 per cent (wet basis). These were used as inputs into designing a beniseed oil expeller, as available ones could not perform effectively with the seed. The determined physical properties were linear dimensions, size, sphericity, bulk and true densities, porosity, thousand kernel weight and coefficient of...

SUMMARY

T cells of the immune system recognize small antigen peptide fragments loaded onto Major Histocompatibility Complex (MHC) molecules through their T Cell Receptor (TCR). The recognition of antigenic pMHC by the TCR is an extremely sensitive and specific process, discriminating as few as a single antigenic pMHC from the self majority while remaining tolerant to uninfected cells. This unique sensitivity and specificity have been intensely studied, but much is still unknown rega...

ABSTRACT

Thermal management of data centers remains a challenge because of their everincreasing power densities and decreasing server footprints. Current lack of dynamic control over global provisioning and local distribution of cooling resources often result in wasteful overcooling. These trends motivate this thesis research, which focuses on the development of a reliable and energy-efficient framework for allocating cooling resources to meet thermal management requirements, while...

ABSTRACT

In this study of Performance analysis and enhancement of Peugeot 307 timing belt, the effect of the engine speed, run time on the timing belt geometry were investigated and also a model were built to test how an engine should stop working when the timing belt cuts using sensor. The analysis, forces acting on the belt were carried out numerically. The belt failure monitoring model was achieved by the use of ultra-sonic sensor. Also an experiment was design to study the effec...

ABSTRACT

The parametric analysis of a tugboat propeller blade was carried out with solidworks computer aided simulation software. The aim is to achieve vibration and noise mitigation as well as performance improvement of the propulsion system by varying the number of propeller blade to ascertain minimum allowable pressure on the propulsion system. To determine the magnitude of stiffness assumed in the dynamic part of the propulsion system, modeling the propulsion system as an elasti...

ABSTRACT

This research work used shea nut (vitellaria paradoxa) shell and cow hoof (bauhinia ungulata) as the reinforcement materials in the production of automotive brake pads. Taguchi method of experimental design and grey relational analysis were used to determine the optimal values of the manufacturing parameters. Other constituents combined together to produce the brake pad samples were epoxy resin, graphite, calcium carbonate and aluminium oxide. The optimal values obtained fo...

ABSTRACT

This report presents the development of light vehicle brake pad test rig for testing and measuring the materials frictional characteristics such as brake pad wear rate, disc temperature, and average disc stopping time. Product validation and quality control is very necessary in the developmental process of any product. The brake pads were tested at various input variables such as speed and pressure to determine the effects of contact pressure on brake pad wear, and effects...

ABSTRACT

Aluminium in Nigeria is a popular metallic element. Widely used to produce single domestic appliances and even industrial engine components. These components display a decrease in performance level after many years of service are discarded and they become waste that tend to be a problem to manage. Furnaces are required for student practice to improve their technical skills, to reduce stress of local blacksmiths and the reduce delays due to frequent power interruption. This...

ABSTRACT

The work focuses on the development of a low cost briquette making machine using Rice husks and Sugarcane baggase as selected materials. The realization that deforestation and wood fuel shortages are likely to become pressing problems in many countries has turned attention to other types of biomass fuel. However, rice husks and sugarcane baggasse residues are often bulky and difficult to burn which lead to this conversion technique developed. In developing this briquetting...

ABSTRACT

In this study selected natural waxes were blended with other selected synthetic waxes like paraffin wax and microcrystalline wax for the purpose of investment casting. Beeswax, carnauba wax and microcrystalline wax were selected to be blended with paraffin wax at the proportion of; 100%-0%, 80%-20%, 60%-40%, 50%-50%, 40%-60%, 20%-80%, and 0%-100% for each blend. Wax properties like ash content, density, specific gravity, melting point, surface finishing, and shrinkage were...

ABSTRACT

In this study selected natural waxes were blended with other selected synthetic waxes like paraffin wax and microcrystalline wax for the purpose of investment casting. Beeswax, carnauba wax and microcrystalline wax were selected to be blended with paraffin wax at the proportion of; 100%-0%, 80%-20%, 60%-40%, 50%-50%, 40%-60%, 20%-80%, and 0%-100% for each blend. Wax properties like ash content, density, specific gravity, melting point, surface finishing, and shrinkage were...

ABSTRACT

The chemical and mechanical properties of recycled mild steel from scraps in Nigeria was investigated using the mechanical (strength of materials) testing approach, chemical (elemental composition) testing approach and metallurgical (microstructural analysis) testing approach methods. The aim of this study is to investigate the quality of recycled mild steel reinforcement used for engineering applications in Nigeria by obtaining asproduced mild steel samples of 12mm diamete...

ABSTRACT There are improper solid waste management processes in Abuja metropolis which leads to causes of ill health and environmental hazards to inhabitants. The effect of pollution caused by solid waste in open dumps and landfills can be minimised through conversion of the waste to energy.This study focuses on assessing energy generation potential from solid waste generated in Abuja municipal. The study investigated available energy conversion in solid waste using four sample of waste from...

INTRODUCTION

        Camp bed is used universally for relaxation, emergency eases such as war and in other several ways, and it is the acknowledgement of these resources that led to the design of the foldable camp – bed. All the existing foldable camp bed, have almost the same dimension but differ in design. Some use rope and ailets while the modern design make use of wood and spring. Some other are constructed using straight...

ABSTRACT

In this study, a gas assisted solar powered absorption air – conditioning system was designed, constructed and tested under Zaria weather conditions in Nigeria. A technical and economic viability study of the system was first carried out by developing and simulating a TRNSYS model of the system to cool an office block with an average space cooling demand of 151.8kWh/m2 per annum, under Zaria weather conditions. System components were sized and optimized to give maximu...

ABSTRACT

This work focused on the production and testing of biodegradable grease from Balanites aegyptiaca seed kernel oil. This was carried out by extracting the oil from the seeds using solvent n-Hexane extraction and reacting a given quantity of the extracted oil with a lithium soap to produce a lithium based biogrease. Consistency tests, drop point as well as gear wear tests were conducted on the developed biogrease samples and the results compared against that of a commercially...

ABSTRACT

This study has evaluated the effectiveness of metallic materials as chill in sand casting of aluminium alloy. Four plates of dimension 165mm x 80mm x10mm were cast using sand mould. Steel, copper and brass chills in form of cylindrical bar of geometry 7mm in diameter and 50mm long were inserted, side by side at regular intervals of 30mm in each sand mould and the last sample was left unchilled. Experimentation involved testing of mechanical properties and metallographic ana...

ABSTRACT

In recent years there has been an increased awareness to conserve energy through efficient use of fuels, energy saving devices and insulation against heat losses. Consequently, the construction of a rocket stove was undertaken in this research and the thermal property tests for ash and clay-sawdust insulation materials were carried out, after which the effect of these insulation materials on the thermal efficiency of the rocket stove was experimentally determined using cook...

ABSTRACT

This study centres on Failure Evaluation of Engineering Projects in Nigeria, A case study of Pipeline and Product Marketing Company Limited (PPMC). The instrument used in this study is analysis of some randomly selected Projects and questionnaires administered to Professionals involved in the execution of projects in PPMC. The result of this study show that there is still no consensus among project Management experts on what constitute a project failure, some consider failu...

ABSTRACT

This research sole aim is to improve on the development of conceptual procurement models that can create direct and indirect impacts of various forms of plant and equipment procurement in Kaduna state Tertiary Institutions in relation to, need assessment, delay in completion, costs and non-conformance with specification by suppliers and installation related issues, likewise the involvement of professionals in procurement activities. The model builds on existing classificati...

Excerpt from the Study

The problem identified by this research is health risk associatedwith the use of asbestos as a friction material and theincompatibility of thenumerous materials currently used in the development of an asbestos free brake pads. Some of these health risksinclude; Asbestosis, Lung cancer, Mesothelioma (a cancer of the linings around the lungs and abdomen), non-cancerous diseases that affect the linings around the lungs and abdomen (commonly calle...

Excerpt from the Study

Internal combustion engine lubricants supposed to be eco-friendly. Their production and use should not have any threat to the environment and the users. However, production, use and unsafe disposal of lubricants such as engine oils for internal combustion engines have raised concern over environmental pollutions (Mobarak et al., 2014 and Aji et al., 2015). This has brought in attention towards the use of non-edible vegetable oils as an alterna...

ABSTRACT

This project deals with the construction and fabrication of a two face gas burner. The gas components consists of the following major components; burner, injector opening, mixing tube, burner support, etc. The gas stove was constructed from medium carbon steel material. The choice of the selected material has to do with cost, and local availability. The distance between the cooking pot and the stove burner is 40mm, and the gap between each of the port is 5...

ABSTRACT

In the mechanical Engineering department of institute of management and technology there and many machines but not all in are good shape or form.

This may be due to inadequate maintenance, which is evident in the breakdown of air conditioner. In the case of machine maintenance, the quality and effusiveness of material were well noted. Also not left behind was the cost of maintenance which was minimized an...