iosr-JMCE   Volume-11 ~ Issue-6 ~ Nov-Dec 2014

Abstract: We present a mechanical system model of the inertial type vibrocompactor used in railroad building. In the paper we examine forced vibrations of the mechanical system excited by inertial disturbance. Using a dynamical model of the mechanical system and applying numerical methods, frequency response and frequency relations are found.
Keywords: vibrocompactor, dynamical model, frequency response, inertial forced vibrations.

[1]. B. Petkov, Dynamic model of vibrocompactor with two degrees of freedom, Mechanics, Transport, Communications:3-2015.
[2]. Тондл А., Нелинейные колебания механических систем,( Мир, Москва, 1978)
[3]. D. Vasilev, Vibrations of a mechanical system with positional dry friction and kinematics and forced disturbance, Mechanics,
Transport, Communications:3-2015.

Abstract: For more than a century, hydrocarbon fuels have played a leading role in propulsion and power generation. Recent years, declining oil reserves and increased fuel prices have, together with increased awareness of the environmental impacts of burning hydrocarbon fuels, led to an interest in alternatives to fossil fuel based propulsion and power generation. One such alternative is to use hydrogen as an energy carrier and to extract energy using a fuel cell or a modified internal combustion engine. Hydrogen as a fuel in Internal Combustion engines is a solution for the near future to realize zero CO2 emissions for trafficapplications. This paper presents an overview of the internal combustion hydrogen fuelled engine.
Keywords: Hydrogen, Fuels, Combustion, Propulsion, Engine

[1]. Aceves S.M. and Smith J.R.: Hybrid and conventional hydrogen engine vehicles that meet EZEV emissions. SAE, paper nr 970290,
(1997).
[2]. Bardon M.F. and Haycock R.G.: The hydrogen research of R.O. King, Proceedings, 14th World Hydrogen Energy Conference,
invited paper, Montreal, Canada, (2002).
[3]. Berckmüller M. et al.: Potentials of a charged SI-hydrogen engine. SAE, paper nor 2003-01-3210, (2003).
[4]. Binder K. and Withalm G.: Mixture formation and combustion in hydrogen engine using hydrogen storage technology, International
Journal of Hydrogen Energy, 7, 651–659, (1982).
[5]. Das L.M.: Hydrogen-oxygen reaction mechanism and its implication to hydrogen engine combustion, International Journal of
Hydrogen Energy, 21, 703–715, (1996).

Abstract: Ordinary Portland cement is recognized as a major construction material throughout the world. Researchers all over the world today are focusing on ways of utilizing either industrial or agricultural waste, as a source of raw materials for industry. This waste, utilization would not only be economical, but may also result in foreign exchange earnings and environmental pollution control as industrial wastes, such as blast furnace slag, fly ash and silica fume are being used as supplementary cementing materials (SCMs). Currently, there has been an attempt to utilize the large amount of bagasse ash, the residue from sugar industry and the bagassebiomass
fuel in electric generation industry.

[1]. Aigbodion.V.S, Hassan.S.B, Olajide.S,O, Agunsoye.O.J, AbdulRahaman.A.S. and Okafor.G.E,"The use of rice husk ash as an
aggregate for foundry sand production in Nigeria", Proceedings of The Nigerian Metallurgical Society (NMS), Annual Conference
& Annual General Meeting, 2008 pp 16-22.
[2]. Mrs.U.R.Kawade, Mr.V.R.Rathi, Miss Vaishali and D. Girge, "Effect of use of Bagasse Ash on Strength of Concrete", ISSN: 2319-
8753 Vol. 2, Issue 7, 4. Abdolkarim Abbasi and Amin Zargar," Using Baggase Ash in Concrete as Pozzolan", Middle-East Journal
of Scientific Research 13 (6):2013 pp716-719.
[3]. Committee Board of sugar cane and sugar Summary of sugar cane and sugar industry in Thailand in 2003/2004, Division of sugar
cane and sugar industry Policy,Ministry of Industry,Vol.2 (2004). Bangkok Thailand (in Thai). 4
[4]. Abdolkarim Abbasi and Amin Zargar, "Using bagasse ash in concrete as pozzolan," Middle-East Journal of Scientific
Research,vol.13(6), 2013. pp.716-719.
[5]. Ganesan, K., Rajagopal, K., and Thangavel, K. "Evaluation of bagasse ash as supplementary cementitious material" Cement and
Concrete Composites,2007.

Abstract: This present investigation is primarily focused on comparison of emission reduction in diesel engine by biofuels namely Methanol, Ethanol and Butanol when added to diesel as blends with the help of CFD simulation. The simulation is performed on a 1.9L, four-cylinder direct injection diesel engine using a commercial code AVL FIRE for a rectangular piston geometry . To perform the combustion simulation, hexahedral mesh of engine bowl shape was created using AVL FIRE ESE diesel module. Further, ECFM-3Z
type of combustion model based on laminar flame let concept is applied in the present work. The three fuel Methanol (D+M), Ethanol (D+E) and Butanol (D+B) are blended to diesel in the ratio of 5% (M5, E5 and B5) and 10% (M10, E10 and B10) by volume. The effects of these blended fuels on the emission such as NO, SOOT, CO and HC are compared.

[1]. Zehra Sahin , Orhan N. Aksu. Experimental investigation of the effects of using low ratio n-butanol/diesel fuel blends on engine
performance and exhaust emissions in a turbocharged DI diesel engine. Renewable Energy 77 (2015) 279e290. http://dx.
doi.org/10. 1016/j.renene. 2014.11. 093.
[2]. Nadir Yilmaz, Francisco M. Vigil, Kyle Benalil, Stephen M. Davis, Antonio Calva. Effect of biodiesel–butanol fuel blends on
emissions and performance characteristics of a diesel engine. Fuel 135 (2014) 46–50.
http://dx.doi.org/10.1016/j.fuel.2014.06.022.
[3]. Zunqing Zheng, Lang Yue, Haifeng Liu , Yuxuan Zhu, Xiaofan Zhong, Mingfa Yao. Effect of two-stage injection on combustion
and emissions under high EGR rate on a diesel engine by fueling blends of diesel/gasoline, diesel/n-butanol, diesel/gasoline/nbutanol
and pure diesel. Energy Conversion and Management 90(2015)11. http://dx.doi.org/10.1016/j.enconman.2014.11.01.
[4]. Byungchul Choi, Xiaolong Jiang, Young Kwon Kim, Gilsung Jung, Chunhwan Lee , Inchul Choi, Chi Sung Song. Effect of
diesel fuel blend with n-butanol on the emission of a turbocharged common rail direct injection diesel engine. Applied Energy
146 (2015) 20–28, http://dx.doi. org/10.1016/j. apenergy.2015.02.061.

Abstract: Usage of synthetic unit hydrograph Nakayasu for calculating of flood discharge, often result in different values with a significant deviation of a field recording flood discharge. This will affect the design of water building, river cross-sectional studies and other hydraulics study purposes. Significant deviation values due to the characteristics of each watershed are not the same, especially land use in most of the watershed is currently changing dramatically, thus greatly affect the runoff coefficient. The results of modeling runoff patterns using synthetic unit hydrograph Nakayasu in the watershed Bedadung district of Jember in this study were obtained value of Tr = 0.3 and α = 0.651 gives the reliability of 71%. By obtaining value of Tr and α more detail, and utilizing the distribution of land use or runoff factors, then investigated coefficient of river length (L). As a result the value of the coefficient L is 0.052 which have a level of reliability model of 87.44%.
Key Words: Nakayasu, river, flood, plan

[1]. Arsyad, Sitanala. 1989. Konservasi Tanah dan Air. Bogor: IPB Press
[2]. Asdak, Chay. 2004. Hidrologi dan Pengelolaan Daerah Aliran Sungai. Yogyakarta: Gadjah Mada University Press.
[3]. Chow, Ven Te, 1985, Hidrolika Saluran Terbuka, terjemahan Suyatman, Kristanto dan Nensi R, Jakarta, Penerbit : Erlangga.
[4]. Harto, Sri, 1993, Analisa Hidrologi, PT Gramedia Pustaka Utama, Jakarta.
[5]. Kartasaputra, A.G, 1985. Teknologi Konservasi Tanah dan Air. Jakarta: PT. Bina Aksara.

Abstract: The effect of silica fume as an admixture in cement based materials is well known to construction industry. Many works have been taken place as replacement to cement in the cement concrete mass. The past research works have been focused as replacement to cement at various dosages. The present paper focused on effect of uniform size and dosage of micro silica in the concrete.For the present work 20, 45, 90,125 and 250 micron size particles of silica fume and with different replacements of 10, 20, 30 and 40% for cement in the
concrete is provided. Total 240 cube specimens are prepared with above particle sizes and replacements and these are tested in the laboratory. The results showed that the 20 micron size and 20% replacement of cement with micro silica is effective than the other mixes.
Keywords: Admixture, Micro silica, Size of particle, Different replacements, Compressive strength

[1] SantanuBhanja and BratishSengupta , Optimum silica fume content and its mode of action on concrete. ACI materials journal,
2003, 407-412.
[2] R.Duval and E.H.Kadri ,Influence of silica fume on the workability and the compressive strength of high performance concretes
.Pergamon cement and concrete research, 1998,533-547.
[3] B.L.P. Swami, P. Srinivas Rao nad P.S.S Narayana studies on Cement replacement in concretes by micro silica 920-D. 30th
conference on our world in concrete and structures, Singapore, 2005,23-24.
[4] Bentur A, Goldman A, Cohen MD. Contribution of transition zone to the strength of high quality silica fume concretes. In:
proceedings of the materials research society symposium, vol.114:1987.p. 97-103.
[5] MazloomM, Ramezanianpour AA, Brooks JJ. Effect of silica fume on mechanical properties of high strength concrete. Cement
and concrete composites, 2004:26(4):347-357.

Abstract:CNC End Milling Machining is a widely accepted material removal process used to manufacture components with complicated shapes and profiles. The quality of the surface plays a very important role in the performance of milling because good-quality milled surface significantly improves fatigue strength, corrosion resistance, or creep life. The surface generated during milling is affected by different factors such as vibration, spindle run–out, temperature, tool geometry, feed, cross-feed, tool path and other parameters. In the present study, experiments are conducted on aluminium 6351 materials to see the effect of process parameter variation in this respect.

[1] Joshi, Amit and Kothiyal, Pradeep, " Investigating effect of machining parameters of CNC milling on surface finish by taguchi
method" International Journal on Theoretical and Applied Research in Mechanical Engineering, Volume-2, Issue-2, pp. 113-119,
2013
[2] Anish Nair & P Govindan, "Optimization of CNC end milling of brass using hybrid taguchi method using PCA and grey
relational analysis" International Journal of Mechanical and Production Engineering Research and Development (IJMPERD)
ISSN 2249-6890 Vol. 3, Issue 1, Mar 2013, 227-240.
[3] Shahzad Ahmad , Harish Kumar Sharma, Atishey Mittal, "Process Parametric Optimization of CNC Vertical Milling Machine
Using ANOVA Method in Mild Steel – A Review, International Journal of Engineering Sciences & Research Technology pp
137-146, http: // www.ijesrt.com
[4] J.Pradeep Kumar & K.Thirumurugan, "Optimization of machining parameters for Milling titanium using taguchi method",
International Journal of Advanced Engineering Technology Vol.III/ Issue II/April-June, 2012/108-113 ,E-ISSN 0976-3945
[5] Reddy Sreenivasulu, "Multi response characteristics of process Parameters during end milling of GFRP using grey based
Taguchi method", Independent Journal of Management & Production (IJM&P)http://www.ijmp.jor.br v. 5, n. 2, February – May
2014.ISSN: 2236-269X DOI: 10.14807, pp.299-313.

Abstract:The aim of the research contained in this study is to check the applicability of the destructive and non-destructive techniques in concrete , to make such comparison between destructive and non-destructive tests
Two grades of concrete were considered, grade 25 and grade 30 N/mm² . For each grade 24 cubes and three beams were casted and tested. Two destructive tests were made(crushing test and tensile strength test) and two non- destructive tests were considered(rebound hammer test and ultra-sonic pulse velocity test). These tests were conducted in different intervals of time from the date of cast (7, 14, 28 and 56 days). Cubes were tested for crushing, hammer and ultra-sonic pulse velocity tests. Beams were tested for tensile strength after 28 days . According to the designated compressive strength after 28 days crushing test show good results, Non-destructive tests is very sensitive to local variations in the concrete (aggregate particles, voids, steel, cracks, experience of the operator,…,etc) (Bungy&Millard,2004)[1] so for as measure of concrete strength this type of test may can not be a reliable test.

1]. BUNGY,J.H&MILLARD, S, G, 2004, ((Testing of concrete in structures)).
[2]. Neville, A, M & Brooks,1990,(( Concrete Technology )) Singapore, Person Education Asia Pte Ltd.
[3]. Mehta, P. Kumar & Monteriro Paulo ,J,M,2006,((Concrete [micro structure, properties and materials])), McGraw hill, Third edition
[4]. Beatrix, steven, H, Kosmatka & Panarese, William, C.2003, ((Design and control of concrete mixtures, SKOKI, Illinois, USA, 40th
Edition.
[5]. BS1881:Part111:1983, Testing concrete, method of normal curing of test specimens, British standards institution, London.
[6]. BS1881:part203Recommendations for measurement of velocity of ultrasonic pulses in concrete. British standards Institution,
London.

Abstract:The objective of this work is to develop foundry waste sand as a masonry mortar and plastering mortar. Since there is acute shortage of sand the efforts are made on finding the alternate material to the sand. This has lead to study the properties of mortar using foundry waste sand obtained from ALSTOM industry Shahabad. Tests for physical properties of various material used in preparation of mortar such as cement, local sand and foundry waste sand were conducted. Based on trail flow table test mix proportion and w/c ratio were fixed. Specimens caste for different tests were 21 for masonry mortar, 27 for plastering mortar, 9 for water retentivity and 18 for sulphate attack test respectively. Thus in all 81 specimens were caste for the experimental studies.

[1] Naik, T.R., Patel V.M., Parikh D.M., Tharaniyil M.P., Application of Foundry By-Product Materials in Manufacture of concrete and masonry products. ACI Materials Journal, January-February 1996.
[2] J. M. Khatib, S. Baig, A Bougara, and C Booth, Foundry Sand Utilisation in Concrete Production, Second International Conference on Sustainable Construction Materials and Technologies, June 28-June 30, 2010
[3] Saveria Monosi, Daniela Sani and Francesca Tittarelli, Used Foundry Sand in Cement Mortars and Concrete Production, The Open Waste Management Journal, 2010, 3, 18-25.
[4] IS: 1489-1991, Specifications for 53-Greade Portland Pozzolana cement, Bureau of Indian standards, New Delhi, India. ASTM D-512,Texas Department of Transportation Materials and Tests Division, Test method Tex-619-J
[5] IS: 383-1970, Specifications for coarse and fine aggregates from natural sources for concrete, Bureau of Indian standards, New Delhi, India.

Abstract:To generate air swirl inside a direct ignition diesel engine combustion chamber an attempt is made to modify some possible changes in an inlet valves without disturbing the properties of valve material, which ensures an improved combustion and a noticeable improvements in emission levels at its exhaust gases. In order to select better and most suitable modifications in practicality the simulation through CFD is the most precisive and accurate way of selecting the optimum modification in inlet poppet valves. Keywords: Swirl, Turbulence, CFD analysis, thermal efficiency HC and CO

[1]. Pandey K. M. and Roy Bidesh : Intake valve design for high level swirl Induction in carbureted spark ignition engine, Department of Mechanical Engineering, N.I.T Silchar, Assam (INDIA) JERDVol. 7 No. 1A, July-September 2012
[2]. Seita Akimoto Techniques for Low NOx Combustion on Medium Speed Diesel Engine TECHNICAL PAPER
[3]. Jorge MARTINS Design of an inlet track of a small i. C. Engine for swirl enhancement 20th International Congress of Mechanical Engineering Copyright © 2009 by ABCM November 15-20, 2009, Gramado, RS, Brazil
[4]. Bassem Ramadan, Study of swirl generation in di diesel engine using kiva-3v Kettering University
[5]. Christophe Garth Extraction and Visualization of Swirl and Tumble Motion from Engine Simulation Data, Univ. of Kaiserslautern (hagen@informatik.uni-kl.de)
[6]. Wendy Hardyono CFD Investigation of Fluid Flow and Turbulence Field Characteristics in a Four-Stroke Automotive Direct Injection Engine, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Techniques for Low NOx Combustion on Medium Speed Diesel Engine