ADEFUYE OLUSEGUN ADEFOLABI

Mechanical Engineering

At the Mechanical Engineering department office

Appointment on Visitation important

Topic: Comparative Analysis Of Products And Process Of Conventional Pattern Making And 3D Printing Of Patterns For Sand Casting

Description: INTRODUCTIONPatterns are the tools used to create mold cavities in sand molds. Patterns are very important because defects in pattern directly results into defects on the castings. The complexity and accuracy of patterns that can be produced by a pattern maker depends to a large extent on his skills and the equipment he uses. The 3-dimensional 3D printer has produced in the foundry products both molds and patterns that will be very difficult if not impossible to make by conventional methods and that it did with remarkable accuracy. Also the lead time needed by pattern makers are usually rather long. The process of costing a pattern may not be related to its complexity, material consumption, skills and human effort required for its production. With 3D printing, the cost is systematic and the lead time is calculated before the job starts. However the material used by the 3D printer is not the same as the conventional materials Hard wood, soft wood, metals and resins used in conventional casting.AIM: the aim of this work is to produce a pattern of intermediate complexity by conventional method and 3D printing. The technical quality, accuracy,lead time , and cost of the products will be compared. Also the suitability of the material used in the 3D printing will be tested and compared with that of the conventional materials.Objectives i Production of a pattern of intermediate complexity by both conventional method and 3D printing noting, the lead time and Cost. ii The accuracy of the patterns will be determined using meterological techniques, surface roughness and draft will be determined using standard techniques and equipment. Castings will be produced to determine clarity of some characters. iii Test specimen for flexural strength will be produced from both the conventional pattern making materials and the 3D printing materials and the flexural strength determined.Methodology.An engineering drawing of the pattern will be given to both the conventional pattern maker and the 3D printing operator. lead time and cost will be recorded, Using standard equipment and procedure, the accuracy, surface roughness, draft, of the patterns will be determined. Castings will be produced to determine clarity of characxters. and Flexural strength of the materials will be determined. these results will be analysed to determine which iis the better of the two processes.Expected ResultsDue to differences in the materials and process, very different results from the two processes may be expected.Contribution To Knowledge/Society: To the best of the authors knowledge there exist no experiment like this or a similar one that has been carried out in Nigeria. If the results show that 3D printing is the superior process, then it will create new customers the foundries for the 3D printing operators, pattern makers may also train themselves on the use of the 3D printing machines and buy it thereby upgrading themselves. If the results indicate otherwise then no researcher need bother repeating the experiment which in itself is a contribution to knowledge.

#	Certificate	School	Year
1.	Ph.D (Metallurgy and Materials)	School of Metallurgy and Materials/University of Birmingham	1997

Determinin The Optimum Flexural Parameter for the Fingers of a Chicken De-feathering Machine

Introduction: Chicken plucking is a slow ,Boring and labour intensive exercise. Chicken De-feathering machines have been produced and used to different degree of Success. Generally they are faster than chicken plucking and provide clean birds to some degree. but the cleanliness of the birds can be improved on. The aim of this project is to design and fabricate a user friendly chicken de-feathering machine that produces a very clean chickenObjectives . j Design a chicken de-feathering machine ii Fabrication and performance evaluation of the machine iii Use different finger materials to see which performs bestMethod.A chicken De-feathering machine will be fabricated based on some principles of Mechanical Engineering. The machine parts will be fabricated and assembled. The machine will be tested on real chickens and its performance noted. The finger materials will be changed and the performance noted. At the end the finger that cleaned the chicken cleanest will be used.Expected results. The cleanliness of the chicken will vary with the different fingers. Fingers that are too hard will cut into the chicken and those that are too soft will not remove the feather fast enough.Contribution to knowledge. The optimum material for the fingers of the de-feathering machine will be known.Contribution to the society. An industry can be built around the machine and this will provide employment. Also as it will be produced locally, It saves us foreign exchange and it will be even cheaper to purchase by those that need it.

ADEFUYE OLUSEGUN is a Senior Lecturer at the Department of Mechanical Engineering

ADEFUYE has a Ph.D in Metallurgy and Materials from School of Metallurgy and Materials/University of Birmingham