iosr-JMCE   Volume-11 ~ Issue-5 ~ Sep-Oct 2014

Abstract: In this project we have endeavoured to study and create an adaptive design of semi-flexible screw conveyor using conventional specifications and standards. A CAD model shall be developed of a three segment screw conveyor that can function as a single unit as well as independently and also can be mix matched, thus providing flexibility by length variation. Also applying the concept of universal joint, each of these segments can be linked at an angle, both in the horizontal and vertical planes thus providing flexibility by angle variation. The successful design and assembly of the CAD model shall provide us a cheap, efficient and standard method of providing flexibility in screw conveyors.

Keywords: Auger Section; Keys and Splines; Norelem Single Cardan Joint; Trough; Tonnage Capacity

[1]. Uematsu T., Nakamura S., Hino, Y. and Suyama, ‗A study of the screw conveyor ‗Trans. JSME, 26(162), 180–186. (1960).
[2]. Chris Rorres ―The turn of the screw: Optimal design of an Archimedes Screw‖, Page: 72-80, Journal of Hydraulic Engineering / January 2000.

[3]. Siddharta Ray, ―Introduction to Materials Handling‖ New Age International (P) Ltd., 2008, pp. 112-118.
[4]. Don McGlinchey, ―Bulk solids handling, equipment selection and operation‖ Blackwell Publishing Ltd., 2008, pp. 197-220.
[5]. Kevin Otto, Kristin Wood, ―Product design-Techniques in Reverse engineering and New Product Development,‖ Pearson Education Inc., 2001.
[6]. V.B Bhandari, ―Design of machine elements‖ Tata McGraw-Hill, 2007.

Abstract: Over the years, modern maintenance cost has gradually built up, often frighteningly outpacing material or labor costs in cost of production. This is however brought about the need to develop new maintenance strategies that can effectively reduce the cost, while at the same time adequately maintain the integrity of the equipment, this work takes a look at various concepts of reliability such as Fault Tree Analysis (FTA). Failure Mode and Effect Analysis (FMAE), Reliability Centered Maintenance (RCM), the usefulness of data associated concepts such as Mean- Time- To- Failure (MTTF), instantaneous failure rate, lifetime of components and others in uncovering the root causes of the failure associated with an Ingersoll- Rand compressor.

Keywords: Reliabilty, Maintenance, cost, Valve, Failure rate

[1]. Institute of Electrical and Electronics Engineers (1990) IEEE Standard Computer Dictionary: A Compilation of IEEE Standard Computer Glossaries. New York, NYISBN 1-55937-079-3
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[3]. O'Connor, Patrick D. T. (2002), Practical Reliability Engineering (Fourth Ed.), John Wiley & Sons, New York. ISBN 978-0-4708-4462-5
[4]. System Reliability Theory, second edition, Rausand and Hoyland – 2004
[5]. The Blame Machine, Why Human Error Causes Accidents - Whittingham, 2007

Abstract: A stochastic identification technique is proposed to estimate both the order and parameters of multi-inputs multi-outputs vibrating structural systems. A time-series model of an over-specified order is considered. The extraneous modes associated with the over-specified order model are distinguished from system modes by applying a backwards approach. The poles of the extraneous modes have been shown to be canceled by the extra zeroes. These poles are found to be generally inside the unit circle. Simulation examples have been presented to illustrate the effectiveness of the present proposed identification approach. Experimental runs on the vibration of a flexible truss, representing the tower of an overhead tower cranes, is carried out, the data of which was used to identify the system order and parameters.

Keywords: Extraneous modes, flexible structures, multi-input multi-output (MIMO) systems, stochastic system identification, tower cranes.

[1] E. Yazid, S. Parman, and K. Fuad, Vibration Analysis of Flexible Gantry Crane System Subjected Swinging Motion of Payload,
Journal of Applied Science, ISSN 1812-5654, 11 (10), 2011, 1701-1715.
[2] J. Wahyudi, M. Riza, and J. Momoh, , Control Strategy for Automatic Gantry Crane Systems: A Practical and Intelligent Approach,
International Journal of Advanced Robotic Systems, ISSN 1729-8806,Vol. 4, No. 4, 2007, 447-456.

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Abstract: Solar energy is renewable source of energy which can be used for many applications like power generation, water heating & cooking etc. The hard part is capturing the sunlight. It shines all over the earth. Air compressors, sometimes referred to as gas compressors, are devices or tools that reduce the volume of a gas thus creating pressure and heat in the gas being compressed. The most common application of this technology is the common or garden air compressor that you might have at home for inflating tyres or using with a spray painting tool. The basic set up of a solar power air compressor is a number of solar panels that are made up of photovoltaic cells. The cells create direct current electricity through the reaction of photons with silicon dioxide. This direct current is used to power a motor that works the compressor unit. In the present work solar photo voltaic is used to generate the power to run the air compressor used for inflating tyres.

Keywords: solar energy, compressor, volume, solar photovoltaic, electricity.

[1]. Passos, E., Meunier, F., and Gianola, J.C., "Thermodynamic performance improvement of an intermittent solar powered refrigeration cycle using adsorption of methanol on carbon‟, Heat Recovery Systems, 6, 259-264, 1986.
[2]. M. Li. C. J. Sun, R. Z. Wang, W. D. Cai, "Development of No Valve Solar Ice Maker", Applied Thermal Engineering, vol. 24, 2002, pp. 865-872.
[3]. Huang M.J., Eames P.C., Norton B., An experimental study into the application of phase change materials to limit the temperature rise in build integrated photovoltaic systems, Proceedings of Renewable Energy in Maritime Island Climates, September, Belfast, UK, 2001, 143-150.
[4]. Antonio Luque, Steven Hegedus, Handbook of Photovoltaic Science and Engineering, 2nd edition by John Wiley & Sons, Ltd., pp. 1014-1072, 2011.
[5]. N. M. Khatlab, "A Novel Solar Adsorption RefrigerationModule", Applied Thermal Engineering, vol. 24, 2004, pp. 2747-2760

Abstract: The purpose of this technical study was to do a design analysis in order to ascertain the performance and output capacity of a pedal powered cassava grinding machine that is very efficient and affordable for rural farmers (dwellers) who cannot afford petrol and diesel engines as a prime mover for garri processing. In the design, the human expended for an average age man of 70kg (1501b) at a cycling speed range of 16km/h – 24km/h or 233 r.p.m was used and after the analysis the efficiency and human power required to drive the shaft was calculated to be 56% and 1.02hp respectively. The machine which is very cheap and affordable is highly recommended for farmers as it can deliver an output capacity of 58:59kg of cassava per hour and can produce a mechanical advantage of 0.42 which is less than 1 as recommended under simple machines.

Keywords: Cassava, Pedal Powered, Rural Farmers

[1]. K.P. Ajao, S.O. Ayilara, I.O. Usman (2013), Design and Fabrication of a Home Scale Pedal Powered Cassava Greater.
[2]. Ministry of Food and Agricultural (2003), Annual Sample Survey of Agriculture Ghana.
[3]. Ajao K.R. Mustapha K, Mahamood M.R, Iyemda M.O. (2010), Design and Development of a Pedal Powered Soap Mixer, New York
Science Journal, Vol. 3(1) Pp.6-9.
[4]. Wilson D.G, Understanding Pedal Power by Volunteer, Published by VITA.
[5]. Adetunyi, O.R. and A.H. Quadric (2011) Design and Fabrication of an Improved Cassava Grater. Pacific Journal of Science and
Technology. 12(2:120 – 129.
[6]. Oladele, P.K, L. Ayodeyi, and S. Agbetoyey (2007) Engineering Research to Improve Cassava Processing Technology. International,
Journal of Food Engineering 3(6):9

Abstract: In any human environment (Residential, industrial, commercial etc) wastes are often generated. These wastes (combustible wastes, organic wastes, metallic wastes, broken ceramics/bottles wastes) constitutes serious nuisance and pose health problems when not properly managed. Attempt to overcome this problem and control these waste, led to the development of broken ceramics/bottles grinding machine. In the design a two stroke spark ignition engine was incorporated. Littered broken bottles and ceramics were gathered from the environment and fed into the hopper where it was grinded into powdered form to be used as a replacement fir sharp sand in a sand blasting machine. The performance of the machine was evaluated the through its output capacity which was feted to be 45.58kg/S using a single stroke S.I engine

Keywords: grinding machine, ceramics/Bottles waste, design, Fabrication

[1]. Samson E.A, Integrated Bicycle pedal, accessed on 24th May, 2012 at Wikipe dia-free encyclopedia.
[2]. Ajao K.R, Mustaphak, Mahamood M.R, & Lyanda M.O, (2010), Design and Development of a pedal – power Soap mixer, New York Science Journal, Vol.. 3(1) pP. 6 – 9.
[3]. K.R Ajao, S.O Ayilara, I.O. usman, (2013), Design and Fabrication of a home Scale pedal power carsava Grater.
[4]. O.R. Adefunji, A.H. Quadri, (2011), Design and Fabrication of an Improved Cassava Grater. The practice journal of Science and Technology.
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[6]. Mrs. Uthman, F. (MNIAE), (2011), Design and Fabrication of cassava lump breaking and sieving machine

Abstract: Smart structures are the structure where in piezoelectric layers are attached to elastic layers in patches or in distributed form. Among many types of smart or adaptive materials, piezoelectric materials are primarily use because, theoretical analysis of this material has been so well developed. In this paper an analytical procedure is developed, to investigate the buckling characteristics of smart material plates subjected to electromechanical loading based on higher order shear deformation theory. The solutions are obtained using Navier's method for symmetric and anti-symmetric cross ply composite laminates attached with piezoelectric layer with all four edges all simply supported. The results obtained in this paper have been compared with other authors.

Keywords: buckling characteristics, higher order theory, navier's method, piezoelectric material, smart structures.

[1] Rajan L. Wankhade, Kamal M. Bajoria, "Buckling Analysis of Piezolaminated Plates Using Higher Order Shear Deformation
Theory", International Journal of Composite Materials, Vol. 3, 2013, PP 92-99.
[2] Hsuan-Teh Hu, Chia-Hao Yang and Fu-Ming Lin, "Buckling analyses of composite laminate skew plates with material nonlinearity"
International Journal of Composites, No. 37, PP 26-36, 2006.
[3] S. K. Singh and A. Chakrabarti, "Buckling analysis of laminated composite plates using an efficient CO FE model", International
Journal of Solids and Structures, No. 9, PP 353-365, 2012.
[4] M. Mohan Kumar, Colins V Jacob, Lakshminarayana N, Puneeth BM and M. Nagabhushana, "Buckling Analysis of Woven Glass
Epoxy Laminated Composite Plate", American Journal of Engineering Research, Vol. 2, Issue 7, PP 33-40, 2013.
[5] Hessameddin Yaghoobi and Iraj Rajabi, "Buckling Analysis of Three-Layered Rectangular Plate with Piezoelectric Layers", Journal
of Theoretical and Applied Mechanics, Vol. 4, No. 51, PP 813-826, 2013

Abstract: Design of the end-effector of a robot is of high importance. This is the part of a robot that actually interacts with the object and does grip it. Without a suitable end-effector, a robot cannot function properly. Poorly designed gripper may result in slip of a component from the jaws of a gripper and even damage parts sometimes. A component may be hold with instability, and this can decrease system reliability. In this paper, discussion is made on design considerations that one needs to take into account while designing the 4-bar linkage gripper. The control system applied for it is also briefed.

Keywords: Robot, gripper, end-effector, FSR, force sensor resistor, 4-bar link.

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