Advanced Materials Research Vols. 984-985

Abstract: Abst r a c t -Magneto rheological aqueous is an old advancing to the bazaar at top speed. Excellent appearance like fast response, simple interface amid electrical ability ascribe and automated ability output, and absolute controllability accomplish MRF technology adorable for abounding applications.The aim of this project is preparation of MR-fluids by using the different types of carrier fluid mixed with iron powder and stability and magnetic properties are analysed. Thesedimentation of iron particles can be reduced by using additives. The sedimentation can be analysed by boundary variation of the clear fluid to the fluid turbulence. The viscosity of smart fluid can be increased by varying the applied magnetic field.The performance of the MR-damper depends on the applied maximum magnetic field and the hydraulic circuit design. The MR-damper force by increasing the magnetic field can be analysed by sing the FEMM V4 Software.Damping force depends on the excitation of current and magnetic field.Key words: Rheological, magnetic field, damping force, FEMM, flux density

Abstract: This paper presents results of an initial investigation into models and control strategies suitable to predict and prevent vehicle rollover due to untripped driving maneuvers. Outside of industry, the study of vehicle rollover inclusive of experimental validation, model-based predictive algorithms, and practical controller design is limited. The researcher interested in initiating study on rollover dynamics and control is left with the challenging task of identifying suitable vehicle models from the literature, comparing these models in their ability to match experimental results, and determining suitable parameters for the models and controller gains. For vehicles that are deemed to be susceptible to wheel-lift, various open-loop control strategies are implemented in simulation. The primary assumption in their implementation is that the vehicle in question is equipped with a steer-by-wire system. Nomenclature

Abstract: In this competitive world, Speed is everything people are crazy on faster things. Speed is their passion either an automobile or any consumer appliances. The faster you get served better the returns expected. Economic value of automobiles is a factor which is dominated by the speed and pickup of the vehicle. In this project effort is made inDesigning and Analysis of the formula one race car chassis using ANSYS software. The Chassis is designed in Solid works, Meshingand Analysis is carried out in ANSYS. To enhance the speed and efficiency, aerodynamic modifications of the car profile is done and also to be float in a dynamic condition, weight is a vital parameter to be considered hence material change is also employed.

Abstract: Self-Compacting Concrete (SCC) is a highly flowable, self-levelling concrete. Just as in Fibre Reinforced Concrete (FRC), fibres can be incorporated into SCC also to get FRSCC. In the present study hybrid fibres namely, Polypropylene and hooked ended Steel fibres are incorporated in different volume fractions and their fresh and hardened state properties have been studied. Fly ash and Silica Fume obtained as waste from industries are used as replacement for cement, the replacement being 10% and 5% respectively. The behaviour of HFRSCC under compression, tension and flexure has been experimentally observed. The stress-strain behaviour of SCC and HFRSCC have also been studied by varying the combinations of volume fractions of hybrid fibres.

Abstract: In this paper, totally 7 innovative steel concrete composite columns were investigated for axial load and reported. 6 of them were modified DSHCFT columns consisting only outer skin tube and butting concrete and the remaining one was Double Skinned Hollow Concrete Filled steel Tubular columns having outer and inner steel tube (DSHCFT), which was annularly in-filled with Self-Compacting Concrete (SCC). The concrete grade and yield strength of steel tubes used were respectively M35 and 250MPa. The ratios of outer tube diameter to its thickness were 34 to 36. The length to outer diameter (aspect ratio) and the hollowness ratio were from 2.4 to 4.5 and from 0.35 to 0.5 respectively. Mechanical behaviour in term of stiffness, confinement, ultimate strength and ductility were discussed. Load Vs mid-span deflection diagrams, failure patterns of the specimens are presented. The existence of composite action between steel and concrete and confinement of concrete were experimentally evidenced. Suitability of two existing design codes is verified. For the design of the modified DSHCFT Stub columns with SCC and DSHCFTs, a possible simplified formula is suggested.Keywords: Failure mode, Stiffness, ductility, confinement, Ultimate load, Simplified formula.

Abstract: The usage of waste materials in making concrete gives a satisfactory solution to some of the problems related to waste management and environmental concerns. In the development of blended cements, some of the Agro wastes such as sugarcane bagasse ash, rice husk ash and wheat straw ash are used as pozzolanic materials. Few studies have been reported on the use of bagasse ash (BA) as partial cement replacement material. This research aims to study the physical and mechanical properties of hardened concrete prepared with bagasse ash as partial replacement material for cement are reported. The Portland cement was replaced with BA in the ratio of 0%, 5%, 10%, 15% and 20% of weight of cement. The compressive strength, splitting tensile strength and flexural strength of concrete at the age of 28 days were investigated. From the test results it was observed that bagasse ash is an effective mineral admixture, with 5% as optimal replacement ratio of cement.

Abstract: Ground-granulated blast-furnace slag (GGBS) is obtained as waste product from the Iron industries, Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder. Investigations were carried out to explore the possibility of using GGBS as a replacement of sand in concrete mixtures. This paper presents the results of study undertaken to investigate the feasibility of using GGBS as fine aggregate in concrete. The effects of replacing fine aggregates by GGBS on the compressive strength of cubes, split tensile strength of cylinders and flexural strength of beams are evaluated in this study. Five test groups were constituted with the replacement percentages of 0%, 20%, 30%, 40%, and 50% .The results showed the effect of GGBS on RCC concrete elements has a considerable amount of increase in the compressive, split tensile and flexural strength characteristics. Leaching studies revealed that GGBS does not leach heavy metals like Pb, Zn, Cr, Ni, Mo etc and also indicates that the leaching of heavy metals was well below the toxicity limits even under aggressive conditions.

Abstract: In soil-structure interaction problems, the frictional resistance between soil and structure is very important to have an appropriate system analysis. It includes retaining walls, deep foundations, soil samplers, soil and geo-membrane interface strength, and the stability of mechanically stabilized structures. Fibre Reinforced Polymer (FRP) is a synthetic material and can be effectively used for strengthening of soils and substructures, and hence it is important to study the interface friction between these FRP sheets with soil. This study will provide some insight knowledge regarding the interfacial friction between gravel soil with glass fibre reinforced polymer. It will be beneficial to the researchers and practicing engineers working in soil-structure interaction problems. The parameters varied in this investigation are surface roughness, orientation of fibre and normal stress (0.05 N/mm² to 0.20 N/mm²). Experimental results show that surface roughness of specimens and fibre orientation was significantly changes the interface friction angle. Shear strength at the interface increases with increase in normal stress and surface roughness. Key words: Direct shear test, gravel soil, internal friction angle, interface friction angle, GFRP.

Abstract: The project area and it surrounding region has been a drought prone area since quite a long time. The majority of the population in this region lives in villages where agriculture is the main source of income. In order to utilize the river water to the possible extent and distributing the same among all the areas of the state, these projects were proposed. This Lift Irrigation Scheme was proposed in to irrigate an ayacut of 1.23 lakh acres and to supply drinking water to the enroute villages [6].

Abstract: In India, more than 22% of milk, fruits and vegetables produced in the villages are spoiled due to lack of preservation facilities. Refrigerated cold storages at local level can be one of the methods to avoid this spoilage. Electrical operated conventional refrigeration is not viable due to the non-availability of electrical power as well as the issues in power transmission. In this paper, the feasibility study of hybrid energy powered cooling system to satisfy the cooling needs of remote seashore villages in southern part of India, where the renewable energy sources are abundantly available has been discussed. A study has been conducted on the possible of energy sources in the above said region and a LiBr-Water absorption cooling system operating with various combinations of available energy sources has been analysed using the Matlab software. Suitable hybrid energy systems with maximum overall COP have been identified and the economic analysis for such systems is also presented.