iosr-JMCE   Volume-13 ~ Issue-1 ~ Jan-Feb 2016

Abstract: The exhaust gas recirculation technique has proven a better solution to reduce NOx emission in diesel engines. EGR method is taken for the study to investigate the engine behavior on its performance and emissions. The paper the performance characteristics such as brake thermal efficiency(BTE),volumetric efficiency(ηvol), exhaust gas temperature(EGT), the exhaust gas emissions such as CO, CO2, NOx, UBHC, O2, and smoke are presented and discussed. The discussion is presented and supported by experimental results. In the experimentation variation in EGR percentage for different air filters is selected for the study. The engine is run by adopting one type of filter at once at different loads for different percentages of EGR such as 5%, 10% and 15%.

Key words: Diesel engine, Air filters, Emissions, EGR.

[1] Nagarajan, G., Kumar, S., and Chowdhury, D., "CFD Analysis of Air Filters for an Off-Highway Vehicle," SAE Technical Paper 2007-26-048, 2007.
[2] Ptak, T. and Walker, M., "Testing Automotive Engine and Interior Air Filters," SAE Technical Paper 970677,1997.
[3] T. Jaroszczyk, J. Wake and M. J. Connor , "Factors Affecting the Performance of Engine Air Filters, Journal of Engineering for Gas Turbines and Power ,Volume 115, Issue 4,Research Paper, J. Eng. Gas Turbines Power 115(4), 693-699 (Oct 01, 1993).
[4] M.R.Chopade1, A.P Valavade 2, S. H. Barhatte3, "Performance Enhancement Of Air Filter By Design Optimization", International Journal of Advanced Engineering Technology, IJAET, E-ISSN 0976-3945, Vol.III, Issue I, January-March 2012, pp: 68-70.
[5] Donepudi Jagadish, Dr.Puli Ravi Kumar, Dr.K.Madhu Murthy., "Performance Characteristics of a Diesel engine operated on Biodiesel with Exhaust gas Recirculation," International Journal of Advanced Engineering Technology, E-ISSN 0976-3945, IJAET/Vol.II/ Issue II/April-June, 2011/202-208.

Abstract: Rotating flexible beams are found in many practical applications. It can be seen in robot arms, turbine blades ,and aircraft rotary wings. Generally, severe transverse vibration occurring in such systems may cause the degradation in performance and accuracy, and even the failure of such elements.

[1]. Vibration Control of variable speed /acceleration rotating beams by using smart materials, Kexiang Wei, Guang Menga, Shuo Zhoua, Jinwu Liub.
[2]. C.Y. Lin, L.W. Chen, Dynamic stability of a rotating beam with a constrained damping layer, Journal of Sound and Vibration 267 (2003) 209–225. [3]. Vibration control of simply supported beams under moving loads using fluid viscous dampers. P. Museros, and M.D. Martinez-Rodrigo
[4]. A text book of Mechanical Vibrations by S.S Rao
[5]. Electric field dependant vibrations of a plate featuring an Electrorheological fluid, Smart Structures and Systems laboratory, Department of Mechanical Engineering, Inha university,S B Choi
[6]. Active Vibration Control of a Flexible Beam Using a Buckling-Type End Force, ASME Journal of Dynamic Systems, Measurement, and Control,Shahin Nudehi
[7]. An Experimental Study of Particle Damping for Beams and Plates, ASME Journal of Vibration and acoustics, Zhiwei Xu, Michael Yu Wang

Abstract: India is developing and progressing rapidly in the field of construction .With the increase in construction at a fast pace, usage of concrete is increasing .Cement is one of the main ingredients of concrete. The increase in environment pollution due to the release of CO 2 in the atmosphere by the production of cement has been alarming. To develop clean environment the use of cement should be limited and should be replaced by an eco friendly material, Geopolymer ,which results from the reaction of a source material that is rich in silica and alumina along with alkaline liquid.

Journal Papers:
[1]. Anuar K.A, Ridzuan A.R.M2.,Ismail Strength Characteristics of Geopolymer Concrete Containing Recycled Concrete Institute of Infrastructure Engineering and Sustainable Management (IIESMUniversiti Teknologi MARA 40450 Shah Alam, Selangor, Malaysia
[2]. Djwantoro Hardjito, Steenie E. Wallah, Dody M. J. Sumajouw, and B.Vijaya Rangan "On theDevelopmentofFlyAsh-BasedGeopolymer Concrete" ACI Materials Journal
[3]. Anurag Mishra,Deepika Choudhary, Namrata Jain,Manish Kumar, Nidhi Sharda and Durga Dutt "Effect of concentration of alkaline liquid and curing time on strength and water absorption of geopolymer concrete" ARPN Journal of Engineering and Applied Sciences ISSN 1819-6608MP.O.
[4]. Shuguang Hu, Hongxi Wong, Gauzhan Zhang, Qingjing Ding "Bonding and Abrasion of geopolymeric repair material waste with steel slag", Cement and Concrete Composites(2008) 239-244.
[5]. Satpute Manesh B., Wakchaure Madhukar R., Patankar Subhash V. "Effect of Duration and Temperature of Curing on Compressive Strength of Geopolymer Concrete" International Journal of Engineering and Innovative Technology (IJEIT) Volume 1, Issue 5, May 2012 ISSN: 2277-3754

Abstract: To machine any material the tribological parameters play an important role in the machining. The main important tribological parameters are speed, feed, and depth of cut. The hard material like EN-31 or AISI 52100 steels are having hardness in between the range of 41 HRC to 69 HRC on C scale of Rockwell hardness. To machine hard materials like this, the special purpose tools or the machines are required. Most of the times the grinding process perform to machine these kinds of materials. But the alternatives like ceramics, cBN, PcBN tools are also available to machine these materials instead of grinding. The different tools are giving different values of roughness after machining, but the roughness value can be optimized by using the different statistical techniques by comparing the different combinations of tribological parameters while performing the machining operations on the hard materials.

[1] Anoop, A. D., Sekhar, A. S., Kamaraj, M., & Gopinath, K. (2015). Numerical evaluation of subsurface stress field under elastohydrodynamic line contact for AISI 52100 bearing steel with retained austenite. Wear, 330, 636-642. [2] Attanasio, A., Umbrello, D., Cappellini, C., Rotella, G., & M'Saoubi, R. (2012). Tools wear effects on white and dark layer formation in hard turning of AISI 52100 steel. Wear, 286, 98-107. [3] Bagawade, A. D., Ramdasi, P. G., Pawade, R. S., & Bramhankar, P. K. (2012, August). Evaluation of cutting forces in hard turning of AISI 52100 steel by using Taguchi method. In International Journal of Engineering Research and Technology (Vol. 1, No. 6 (August-2012)). ESRSA Publications. [4] Bapat, P. S., Dhikale, P. D., Shinde, S. M., Kulkarni, A. P., & Chinchanikar, S. S. (2015). A Numerical Model to Obtain Temperature Distribution during Hard Turning of AISI 52100 Steel. Materials Today: Proceedings, 2(4), 1907-1914.