Research Papers/Topics in Mechanical Engineering

Evaluation of the dangers of corrosion in marine piping system using carbon steel c-1040.

The research was undertaken to ascertain the level and ingress of corrosion in carbon steel C-1040.

Distributed manufacturing with 3-D printing: a case study of recreational vehicle solar photovoltaic mounting systems

For the first time, low-cost open-source 3-D printing provides the potential for distributed manufacturing at the household scale of customized, high-value, and complex products. To explore the potential of this type of ultra-distributed manufacturing, which has been shown to reduce environmental impact compared to conventional manufacturing, this paper presents a case study of a 3-D printable parametric design for recreational vehicle (RV) solar photovoltaic (PV) racking systems. The design ...

3-D Printing Solar Photovoltaic Racking in Developing World

The purpose of this paper is to provide a technical and economic evaluation of the value of the RepRap as an entry-level 3-D printer in the developing world and provide a cost effective solar photovoltaic (PV) racking solution to better serve the developing world and aid in the acceleration of their economic and socioeconomic growth. A customizable open-source PV racking concept is designed, prototyped for three types of modules, constructed into systems, and outdoor tested under extreme cond...

Emergence of Home Manufacturing in the Developed World: Return on Investment for Open-Source 3-D Printers

Through reduced 3-D printer cost, increased usability, and greater material selection, additive manufacturing has transitioned from business manufacturing to the average prosumer. This study serves as a representative model for the potential future of 3-D printing in the average American household by employing a printer operator who was relatively unfamiliar with 3-D printing and the 3-D design files of common items normally purchased by the average consumer. Twenty-six items were printed in ...

Open source laboratory sample rotator mixer and shaker

An open-source 3-D printable laboratory sample rotator mixer is developed here in two variants that allow users to opt for the level of functionality, cost saving and associated complexity needed in their laboratories. First, a laboratory sample rotator is designed and demonstrated that can be used for tumbling as well as gentle mixing of samples in a variety of tube sizes by mixing them horizontally, vertically, or any position in between. Changing the mixing angle is fast and convenient and...

Viability of Distributed Manufacturing of Bicycle Components with 3-D Printing: CEN Standardized Polylactic Acid Pedal Testing

Recent advancements in open-source self-replicating rapid prototypers (RepRap) have radically reduced costs of 3-D printing. The cost of additive manufacturing enables distributed manufacturing of open source appropriate technologies (OSAT) to assist in sustainable development. In order to investigate the potential this study makes a careful investigation of the use of RepRap 3-D printers to fabricate widely used Black Mamba bicycle components in the developing world. Specifically, this study...

Slicer and Process Improvements for Open­source GMAW ­based Metal 3­D Printing

Low­cost gas metal arc welding (GMAW)­based 3­D printing has proven effective at additive manufacturing steel and aluminum parts. Early success, however, was based on hand­writing G­code, which is inadequate for the majority of potential users. To enable automated slicing a 3­D model and generating G­code for an acceptable path for GMAW 3­D printing, this paper reports on upgrading of the free and open source CuraEngine. The new slicer, MOSTMetalCura, provides the following novel abil...

Design, Modelling and Fabrication of a Portable Solar Powered Suction Pump

Some inventions are glamorous and very sophisticated – microchips embedded system technology –and more while some others are quieter, yet not less relevant in easing the work that man has to do with his own energy. Pumps do fall in the latter category (Mario, 2001).This project is intended to model a portable solar powered suction pump. Pumps are devices that transfer fluids (liquid or gas) from one point to another through some mechanical means. Pumps generally have being in use fo...

Design

Solar powered systems have been built for various applications ranging from public lighting to water supply units but robust efforts have not been made in the development of pumping systems that can effectively replace the manually operated pumps used in field applications. Designing a machine that can pump the fluid without the need of so much energy on the part of the operator as well as boycott the use of direct electricity will hence be a reasonable contribution to field of maintena...

Analysis of Longitudinal Aerodynamic Characteristics of an Aircraft M

Analysis of Longitudinal Aerodynamic Characteristics of an Aircraft Model with and Without Winglet Altab Hossain a*, Prithvi Raj Arora b, Ataur Rahman c, Abdul Aziz Jaafar b, A.K.M. Parvez Iqbal aa Department of Mechanical Engineering, University Industry Selangor, Jln Timur Tambahan, 45600 Batang Berjuntai, Selangor Darul Ehsan, Malaysia b Department of Aerospace Engineering, University Putra Malaysia, Malaysia c Department of Mechanical Engineering, International Islamic...

Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves

Abstract: Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves as inhibitor was studied using gravimetric and gasometric analysis. It was found that the leaves extract of both plants act as a good corrosion inhibitor for AISI 4137 steel in all concentrations of the extract ranging from 0.3 - 1.5 g/l and the inhibitive efficiency increases with increasing concentration of inhibitor. Cascabela thevetia has better surface coverage than Jathr...

Dynamic Behavior of Brushless DC Motor under the Application of PI, PD, PID, and Fuzzy Logic Controllers

ABSTRACTThe importance of Brushless Direct Current(BLDC) motors in modern day technology cannot be overemphasized. Its improved performance in terms of efficiency, reliability, noise and dynamic response, better speed versus torque characteristics, higher speed range, and durability over the Brushed Direct Current motors could not be wished away.This work investigates the performance of a BLDCmotor with the application of PI controller, PD controller, PID co...

Design and costruction of bicycle ergometer

CHAPTER ONEINTRODUCTION1.1 BACKGROUND OF THE STUDY: trolling body weight, reducing the chances of heart diseases, reducing the risk of diabetes and some other chronic diseases by improving the functions of the heart, lungs and improving the biomechanical system of the body. Aside surgeryand medication, several methods have been proposed for the prevention and treatment of heart conditions. One of such methods is the use of regulated and supervised exercise as therapy both for prevention of he...

Design and Construction of a Model Power Generating Windmill

This project covers the design and construction of a power generating windmill. The designs was carried out based on long-term available wind data of bida at 10m above the ground level. The average wind speed for Bida is 5.24m/s and rated turbine wind speed is 6.29m/s. The design of each components of the system were carefully constructed in a well equipped workshop within the school premises. Calculations were done manually for each components of the system and the results was match with the...

Statistical model to predict dry sliding wear behaviour of Aluminium-Jute bast ash particulate composite produced by stir-casting

A model to predict the dry sliding wear behaviour of Aluminium-Jute bast ashparticulate composites produced by double stir-casting method was developed in termsof weight fraction of jute bast ash (JBA). Experiments were designed on the basis ofthe Design of Experiments (DOE) technique. A 2k factorial, where k is the number ofvariables, with central composite second-order rotatable design was used to improvethe reliability of results and to reduce the size of experimentation without loss ofacc...


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