iosr-JMCE   Volume-3 ~ Issue-1

Abstract:Reliability centered maintenance (RCM) methodology was originally developed by the U.S. commercial airlines industry in the year of 1960 for identifying applicable and effective preventive maintenance tasks. Safety systems are usually stand by systems and they are periodically to reveal and repair failures that may have occurred since the previous activation or inspection.RCM approach has been applied to the goliath crane system of transmission tower industry for research work reported in this paper.RCM methodology can be applied to Indian industry for reduction of breakdowns as well as optimization of preventive maintenance cost. In the present study preventive maintenance task suggested for power transmission subsystem, guiding and transportation subsystem, hydraulic subsystem and supply current subsystem in goliath train.
Keywords-Goliath crane system, optimization ,rcm, transmission tower

[1] Deshpande V. S. & Modak J.P. "Reliability Engg. & System safety",Elsevier Sci Ltd. 80 (2003) 1-18
[2] Society of automotive engineers (SAE), and Potential Failure Mode and Effects Analysis machinery (Machinery FMEA), June
2000.
[3] Sushil Kumar Shrivastava , "Maintenance Engineering and Management", S.chand and co. ltd new Delhi, 1998
[4] Jones Richard B. "Risk based management", Mumbai jaico publishing house ,1997

Abstract: This paper presents the results of comparative study conducted to evaluate the strength properties of high volume flyash concrete(HVFAC) using a cement replacement level of 50%, 55% and 60% in M20 and M25 grades of concrete. In this investigation an attempt has been made to study the strength properties of HVFAC specimens in comparison with control OPC concrete specimens of same grade. It is observed that the compressive strength of HVFAC is improved by about 50% cement replacement by fly ash with 1.5% of plasticizer was equal to control concrete.
Keywords: Flyash, plasticizer, Compressive strength, Splitting Tensile strength, Flexural Strength

[1] Dhir RK, Hubbard FH, Munday JGL, Jones MR, Duerden SL. Contribution of PFA to concrete workability and strength
development. Cement Concrete Research 1988;18(2):277–89.
[2] Mark Reivier and Kevins Rens, high volume fly ash concrete; analysis and application, practice, periodical on structural design and
construction @ ASCE, 2006.
[3] Ravina.D, Methta.P., "Properties of fresh concrete containing large amounts of fly ash" cement and concrete research,
vol,16,PP227-238,1986.
[4] IS-12269-1987, "Specification for 53 grade OPC" BIS New Delhi.
[5] IS – 3812-1981, "Specification for fly ash for use as pozzolanic and admixture' BIS New Delhi.
[6] IS 10262:2009, "Concrete Mix Proportioning-Guidelines"
[7] IS:516 – 1959, Methods of tests for strength of concrete, edition 1.2(1991-07)

Abstract: As widely known, concrete is an essential material in civil engineering. However, its properties can vary considerably, depending on the nature and proportions of its constituents, the construction methods applied to create it, and the loading and environmental conditions to which it will be subjected over time. Therefore, the development of control methods to determine the condition and ascertain the quality of concrete is critical. Ultrasonic methods can play an important role in this area, since they allow us to monitor the density and homogeneity of concrete, providing information about the strength development and the existence of internal flaws and defects. To ensure that the information provided is reliable, expert knowledge is needed for interpreting the ultrasonic data. Computational tools that support the interpretation of ultrasonic (and other NDT) data might facilitate the job, reducing bias and helping specialists to analyze, in a consistent way, the great amount of data generated by the test. In this context, the use of Artificial Neural Networks (ANN) techniques is seen as a viable and adequate strategy to develop such tools. This study is focused on the evaluation of the feasibility of developing a specialist ANN tool. This kind of technique allows the emulation of the processes of specialists when dealing with uncertainty. Using a neural model, it is Possible to establish a non-linear correlation between known input data, such as ultrasonic readings and a certain output in this case, compressive strength, because this is the most used parameter to determine concrete quality.
Keywords: Compressive strength, Non-destructive testing, Ultrasonic pulse velocity, Regression analysis, Artificial neural network.

[1] Qasrawi H. Y., "Concrete strength by combined nondestructive methods simply and reliablityy‟, Cement and Concrete Research, 30 (Civil), 739-746, 2000.
[2] Tapkin S., Tucan M., Arioz O., Tucan A., "Estimation of Concrete Compressive Strength by Using Ultrasonic Pulse Velocities and
Artificial Neural Network‟, 1-7.
[3] Erdal M., "Prediction of the compressive strength of vacuum processed concretes using artificial neural network and regression
techniques‟, Scientific Research and Essay 4 (10), 1057-1065, 2009.
[4] Kewalramani M., Gupta R., "Concrete compressive strength prediction using ultrasonic pulse velocity through artificial neural
networks‟, Automation in Construction 15 , 374 – 379, 2006.
[5] Noorzaei J., Hakim S., Jaafar M., Thanoon W., "Development of Artificial Neural Network For Predicting Concrete Compressive
Strength‟, International Journal of Engineering and Technology, 4( 2), 141-153, 2007.
[6] Hola J., Schabowicz K., "Application of Artificial Neural Netwoks To Determine Concrete compressive Strength Based On Non -
destructive Test‟, Journal of Civil Engineering And Management, XI (1), 23-32, 2005

Abstract: Friction welding is used in many fields because the procedure is easily automated and it is possible to weld similar and dissimilar materials. It can be used to weld the materials which can not be welded by resistance welding due to electrical and heat conductivity. It can also be applied to weld the materials which have the low co-efficient of friction such as BRASS.Brass is an alloy of 57% cu and 40% Zn and 3% Pb its characteristics are high tensile strength, high resistance to corrosion, easily machinable and low co-efficient of friction. In this research the brass was selected because it can not be weld by resistance welding and arc welding due to high conductivity and it can not be welded by friction welding at normal working parameters due to low co-efficient of friction, but by controlling the parameters it is possible to weld with equally good tensile strength and other mechanical properties. Hence this research mainly concentrates on, The suitable friction welding parameters for the brass material by friction welding to attain the required tensile strength.
Key Words: - Friction welding, Tensile strength, upset, microstructures, Minitab software, DOE,
TAGUCHI, REGESSION, ANOVA.

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Materials Science, Riso, edited by N. Hansen (Riso National Laboratory, Denmark, 1991) PP. 529-534.
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Ti6Al4V plates using filler metal of similar and different composition to the base plate". Vacuum 62 (2-3), 2001.PP 143-150
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Abstract: Thermal property is the important material property for engineering and analysis of insulating materials. In this study, thermal conductivities of insulating materials are determined and compared with the literature values. Lee's and Charlton's apparatus is used to measure this property of insulating materials by steady state technique. This apparatus gives more precise result for insulators that can be utilized for the further thermal related analysis. An experimental set up is prepared to determine and analyze thermal conductivities of insulating materials. The thermal conductivities are obtained by this apparatus are 0.797W/m.K, 0.3023 W/m.K and 0.057 W/m.K for borosilicate glass, styrene butadiene rubber, and polyolefin foam faced aluminum foil respectively. The experimental results are found (9-30) % deviation from the literature values.
Keywords - Lee's and Charlton's apparatus, Steady State Technique, Thermal conductivity, Thermal Insulation.

[1] Wen, J, Fa, W.,Chu, S.H., Thermal conductivity of polyurethane foams, International Journal of Heat and Mass Transfer 42, pp.
2211-2217, 1999.
[2] Salimon A., Ashby, M. F., Greer, A.L., Potential applications for steel and titanium metal foams, Journal of Materials Science 40
pp.5793-5799,2005.
[3] Ohmura, T., Tsuboi, M., and Tomimura, T., Estimation of the Mean Thermal Conductivity of Anisotropic Materials, International
Journal of Thermo physics, vol.23, No. 3, May 2002.
[4] Nagasakat, Y. and Nagashima, A., Absolute Measurement of the Thermal Conductivity of Electrically Conducting Liquids by the
Transient Hot-Wire Method, Journal Physics, Vol. 14, pp.1335-1340,1981.
[5] Mann,D., Field, R.E. and Viskanta, R., Determination of Specific Heat and True Thermal Conductivity of Glass from Dynamic
Temperature Data, Wirme und Stofffibertragung 27, pp.225-231,1992.
[6] Gori, F, Marina C., and Pietrafesa, M., Experimental Measurements and Theoretical Predictions of the Thermal Conductivity of
Two Phases Glass Beads, Inr. Cmm. Heat Mars Transfec, Vol.28, No. 8, pp.1091-1102, 2001.
[7] Doyen, N. T., Grenier, X., Huger, M., Smith, D. S., Fournier, D., and Roger, J.P, Thermal Conductivity of Alumina Inclusion/Glass
Matrix Composite Materials: Local and Macroscopic Scales, Journal of The European Ceramic Society, pp.2635-2640, 2007.
[8] Assael, M.J., Botsios, S., Gialou, K. and Metaxa, I.N., Thermal Conductivity of Polymethyl Methacrylate (PMMA) and Borosilicate
Crown Glass BK7, International Journal of Thermophysics, Vol. 26, No. 5, September 2005.
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Insulation under Transient Heat Transfer Conditions, Struct Multidisc Optim 28, pp.349-355, 2004.
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Journal of Thermo physics, Vol.21, No. 2, pp. 465-478, 2000.

Abstract: Construction earth dam is developed to access supply resources. This paper tried to evaluate numerical analysis of the dynamic settlement during the earthquake in different conditions of the Poisson's ratio from core clay. Models were carried out with NAGAN record. ANSYS software is used regard to Finite-element method. Literature indicated that the maximum displacement during the earthquake is conducted at the crest. Interaction between dam and foundation is cased it. Lateral strain is administered the zero so models were considered in plan strain method. This paper considered end of construction with fill up reservoir when the core clay is saturated. Effect of Poisson's ratio on maximum settlement is evaluated. It was regarded the range between 0.2-0.45 for saturate and un saturate respectively. Results indicated that increase of the Poisson's ratio for saturate condition was caused to reduction of the maximum settlement at the crest and middle of core. It is mentioned the end of construction was at the critical state.
Keywords -Dynamic settlement, Poisson's ratio, Clay core, ANSYS software.

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564, 2009

Abstract: In towns and big cities, the storm water overflow causes many problems like temporary flooding when it is not effectively managed. Indian towns and bigger cities are growing at a faster rate from last few decades due to educational, employment and business opportunities available in towns and bigger cities. The urbanization and concentration of population has increased requirement of buildings and other facilities. This results in increase in impervious surfaces which resulted in increased surface runoff and decrease in rainwater percolation in soil. The problems of managing storm water are becoming more and more severe due to increased storm water runoff. The stormwater overflow is routed through the combined sewers to the treatment plants which eventually increase in the quantity of wastewater, cost for pumping and treatment. Therefore the management of stormwater is one of the important challenges with the municipal authorities. The porous pavement systems are a unique way of handling and treating stormwater under such conditions. This paper highlights the material requirement, properties, construction process, benefits and limitations of porous concrete.

Keywords: Concrete, Management, Porous Pavement, Runoff, Stormwater

[1]. ACI 522R-10, (2010) Report on Porous Concrete, American Concrete Institute, Farmington Hills, Michigan.
[2]. City of Chicago, Stormwater Management Ordinance Manual, (2011)
[3]. Ghafoori, N., and Dutta, S. (1995), "Building and Nonpavement Applications of No-Fines Concrete," Journal of Materials in Civil Engineering, Volume 7, Number 4, 286-289.
[4]. Meininger, R.C. (1988), "No-Fines Pervious Concrete for Paving," Concrete International, Vol. 10, No. 8, 20-27.
[5]. NRMCA, (2004), "What, Why, and How? Pervious Concrete," Concrete in Practice series, CIP 38, Silver Spring, Maryland.