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| 1 | Influence of Rotational Speed on Microstructure and Mechanical Properties of Dissimilar Metal AISI 304-AISI 4140 Continuous Drive Friction Welds显示文摘Fundamental investigation of continuous drive friction welding of austenitic stainless steel (AISI 304) and low alloy steel (AISI 4140) is described. The emphasis is made on the influence of rotational speed on the microstructure and mechanical properties such as hardness, tensile strength, notch tensile strength and impact toughness of the dissimilar joints. Hardness profiles across the weld show the interface is harder than the respective parent metals. In general, maximum peak hardness is observed on the stainless steel side, while other peak hardness is on the low alloy steel side. A trough in hardness distribution in between the peaks is located on the low alloy steel side. Peak hardness on the stainless steel and low alloy steel side close to the interface increases with a decrease in rotational speed. All transverse tensile joints fractured on stainless steel side near the interface. Notch tensile strength and impact toughness increase with increase in rotational speed up to 1 500 r/min and decrease thereafter. The mechanism of influence of rotational speed for the observed trends is discussed in the torque, displacement characteristics, heat generation, microstructure, fractography and mechanical properties. | G Subhash Chander G Madhusudhan Reddy A Venugopal Rao | 2012 | Journal of Iron and Steel Research(International)2012，19，10： | 2 |
| 2 | Dynamic Fracture Toughness of Armour Grade Quenched and Tempered Steel Joints Fabricated Using Low Hydrogen Ferritic Fillers显示文摘The armour grade quenched and tempered steel joints fabricated using low hydrogen ferritic steel (LHF) filler exhibited superior joint efficiency owing to preferential ferrite microstructure in the welds and also they offered required resistance to HIC. However, the combat vehicles used in military operations will be required to operate under a wide range of road conditions ranging from first class to cross country. Structural components in combat vehicles are subjected to dynamic loading with high strain rates during operation. Stress loadings within the vehicle hull of these vehicles are expected to fluctuate considerably and structural cracking especially in welds during the service life of these vehicles can lead to catastrophic failures. Under these conditions, fracture behaviour of high strain rate sensitive structural steels can be better understood by dynamic fracture toughness (K1d). Hence, an attempt was made to study dynamic fracture toughness of the armour grade quenched and tempered steel and their welds fabricated using LHF consumables. The experimental results indicate that the K1d values of the joints fabricated by shielded metal arc welding (SMAW) are higher than those of the joints fabricated using flux cored arc welding (FCAW) process. | G Magudeeswaran V Balasubramanian S Sathyanarayanan G Madhusudhan Reddy A Moitra S Venugopal G Sasikala | 2010 | Journal of Iron and Steel Research(International)2010，17，5： | 2 |
| 3 | Microstructure and tensile properties of Inconel 718 pulsed Nd-YAG laser welds 显示文摘 | JANAKI RAM G D VENUGOPAL A PRASAD K | 2005 | Journal of Material Processing Technology2005，167，： | 1 |
| 4 | The effects of electric fields on polymer blend morphologies 显示文摘 | Venugopal G Krause S Wnek G E | 1990 | Polymer Preprint1990，31，1： | 1 |
| 5 | Intra-islet endothelial cell and β-cell crosstalk: Implication for islet cell transplantation显示文摘The intra-islet microvasculature is a critical interface between the blood and islet endocrine cells governing a number of cellular and pathophysiological processes associated with the pancreatic tissue. A growing body of evidence indicates a strong functional and physical interdependency of β-cells with endothelial cells(ECs), the building blocks of islet microvasculature. Intra-islet ECs, actively regulate vascular permeability and appear to play a role in fine-tuning blood glucose sensing and regulation. These cells also tend to behave as 'guardians', controlling the expression and movement of a number of important immune mediators, thereby strongly contributing to the physiology of islets. This review will focus on the molecular signalling and crosstalk between the intra-islet ECs and β-cells and how their relationship can be a potential target for intervention strategies in islet pathology and islet transplantation. | Siddharth Narayanan Gopalakrishnan Loganathan Maheswaran Dhanasekaran William Tucker Ankit Patel Venugopal Subhashree SriPrakash Mokshagundam Michael G Hughes Stuart K Williams Appakalai N Balamurugan | 2017 | World Journal of Transplantation2017，7，2： | 1 |
| 6 | Dynamic association rule mining using genetic algorithms 显示文摘 | Deepa Shenoy P Srinivasa K G Venugopal K R | 2005 | Intelligent Data Analysis2005，5，9： | 1 |
| 7 | Inhibition of TLR3 and TLR4 function and expression in human dendritic cells by helminth parasites显示文摘 | SEMNANI R T VENUGOPAL P G LEIFER C A | 2008 | Blood2008，112，4： | 1 |
| 8 | Spectroscopic parameters of Nd3+ ion in phosphate glass显示文摘 | Kumar G A Biju P R Venugopal C | 1997 | Journal of Non-Crystal Solid1997，221，： | 1 |
| 9 | Characterization of Microporous Separators for Lithium-ion Batteries显示文摘 | Venugopal G Moore J Howard J | 1999 | Journal of Power Sources1999，77，1： | 1 |
| 10 | Zirconium-cobalt intermetallic compound for storage and recovery of hydrogen isotopes 显示文摘 | NAIK Y RAMA RAO G A VENUGOPAL V | 2001 | lntermetallics2001，9，4： | 1 |
| 11 | Experimental study of mixed convection heat transfer in a vertical duct filled with metallic porous structures显示文摘 | Venugopal G Balaji C Venkateshan S P | 2010 | Int J Therm Sci2010，49，34： | 1 |
| 12 | Microstructure and tensile properties of Inconel 718 pulsed Nd-YAG laser welds显示文摘 | Janaki Ram G D Venugopal A Prasad K | 2005 | Journal of Material Processing Techology2005，167，： | 1 |
| 13 | Spectroscopic parameters of Nd^3+ ion in phosphate glass显示文摘 | Ajith K G Biju P R Venugopal C | 1997 | Journal of Non-crystal Solid1997，221，： | 1 |
| 14 | UHTC-Carbon Fibre Com-posites:Preparation,Oxyacetylene Torch Testing and Characterisa-tion显示文摘 | Paul A Venugopal S Binner J G P | | 0，，： | 1 |
| 15 | A real time and continuous assessment of cortisol in ISF using electrochemical impedance spectroscopy 显示文摘 | Venugopal M Arya SK Chomokur G | 2011 | Sensors and Actuators2011，172，1： | 1 |
| 16 | A selfadaptive migration model genetic algorithm for data mining applications显示文摘 | Srinivasa K G Venugopal K R Patnaik L M | 2007 | Information Sciences2007，177，20： | 1 |
| 17 | Surgical manage ment of chronic pancreatitis with portal hypertension: a 19 year expcriencc显示文摘 | Ramesh H Jacob G Venugopal A | 2008 | Surgery2008，143，： | 1 |
| 18 | Spectroscopic parameters of Nd^3+ ion in phosphate glasses 显示文摘 | Kumar G A Biju P R Venugopal V | 1997 | Journal of Non-Crystalline Solids1997，221，： | 1 |
| 19 | Reeominat envgp85 of HPRS 103 (subgroup J) avian leucosis virus: antigenitic characterization and usefulness as a diagnosis reagent显示文摘 | VENUGOPAL K HOWES K BARRON G et a1 | 1997 | Avian Dis1997，11，28： | 1 |
| 20 | Surgical management of chronic pancreatitis with porial hypertension-a 19-year experience显示文摘 | Ramesh H Jacob G Venugopal A el al | 2008 | Surgery2008，143，2： | 1 |
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