International Journal of Advanced Materials Manufacturing and Characterization最新文献

{"title":"Magneto Rheological properties of Cobalt ferrite based MR fluids","authors":"M. Venkateswarlu, B. Rajinikanth","doi":"10.11127/IJAMMC.2013.02.083","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.083","url":null,"abstract":"Magneto Rheological fluids are made of soft magnetic particles dispersed in a carrier fluid. Here cobalt ferrite based magneto rheological fluids were made from the nanopowders of cobalt ferrite obtained from the simple wet chemical synthesis from the metal salts dispersed in the Polyvinyl Pyrrolidone (PVP). The nanoparticle Cobalt ferrite was heat treated at 600C for five and half hours in a furnace. The sample was characterized by using Xray Diffraction(XRD), Scanning Electron Microscopy(SEM) and Energy Dispersive X-ray Analysis (EDAX). Cobalt ferrite which is mixed with different weight percent solutions of PVP to make the Magneto Rheological fluid samples. These samples were characterized by the Rheometere in both oscillatory, rotational measurement conditions. The variation in viscosity with respect to the magnetic field, storage and loss modulus and damping of the samples were measured and presented in this paper. Magneto rheological (MR) fluids are dispersions of fine magnetically soft, multi domain particles. MR fluids exhibit rapid, reversible and significant changes in their viscosity and shear modulus when subjected to external magnetic field. The apparent yield strength of these fluids can be changed significantly within milliseconds by the application of an external magnetic field [13]. MR fluid devices are being used and developed for shock absorbers, clutches, brakes, and seismic dampers[4].The physical properties of an MR fluid change as a nonlinearly time varying function of applied field driven particle alignment with the typical hysteresis of magnetic materials [5]. The external magnetic field applied to the MR fluid causes changes in all physical properties of the fluid, such as Electrical conductivity, thermal conductivity, permeability, as well as viscosity[3, 68].MR fluid viscosity is very much sensitive to changes on external magnetic fields. Viscosity depends on particle concentration, particle shape, size and material in combination with several carrier fluids [5]. In the current MR devices control of the viscosity is performed by the direct excitation of the external magnetic field. The non-linear, hysteretic time varying response of the fluid is an obstacle to precision viscosity control despite fast response time. Most of the times the MR fluids encounter different operating conditions in which their visco elastic properties plays a vital role. Therefore an understanding of the dynamic behavior of the MR fluid will be crucial for the design[9]. Most of the MR devices operate under dynamic conditions (vibrators, dampers, etc) thus small amplitude oscillatory and rotational measuring rheometer provide more useful results [10]. Keeping these points in view, in the present study we have made an MR fluid which is comprising of magnetically soft Co ferrite nano powders weight percent solutions of PVP and studied their oscillational and rotational viscoelastic properties and results are presented in this paper.","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126093355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis on Stability Bar","authors":"S. Tuljapure, Laxminarayan Sidram Kanna","doi":"10.11127/IJAMMC.2013.02.064","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.064","url":null,"abstract":"Vehicle anti-roll bars are suspension components used for limiting body roll angle. They have a direct effect on the handling characteristics of the vehicle. Design changes of anti-roll bars are quite common at various steps of vehicle production, and a design analysis must be performed for each change. Finite Element Analysis (FEA) can be effectively used in design analysis of anti-roll bars. However, due to high number of repeated design analyses, the analysis time and cost problems associated with the use of general FEA package programs may create considerable. Disadvantages in using these package programs for performing anti-roll bar design analysis. In this study, an automated design program is developed for performing design analysis of vehicle antiroll bars. The program is composed of two parts, the user interface and the FEA macro. The FEA macro includes the codes for performing deformation, stress, fatigue, and modal analysis of anti-roll bars in ANSYS 10. The user interface, which is composed in Visual Basic 8.0, includes the forms for data input and result output procedures. By the developed software, the FEA of the anti roll bars is simplified to simple data entry via user interface. The flow of the analysis is controlled by the program and the finite element analysis is performed by ANSYS at the background. The developed software can perform design analysis for a wide range of anti-roll bars: The bar centerline can have any 3D shape, the cross section can be solid or hollow circular, the end connections can be of pin or spherical joint type, the bushings can be mounted at any position on the bar with a user defined bushing length. The effects of anti-roll bar design parameters on final anti-roll bar properties are also evaluated by performing sample analyses with the automated design program developed in this study. Ride comfort, handling and road holding are the three aspects that a vehicle suspension system has to provide compromise solutions. Ride comfort requires insulating the vehicle and its occupants from vibrations and shocks caused by the road surface. Handling requires providing safety in maneuvers and in ease in steering. For good road holding, the tires must be kept in contact with the road surface in order to ensure directional control and stability with adequate traction and braking capabilities. The anti-roll bar, as being a suspension component, is used to improve the vehicle performance with respect to these three aspects. The anti-roll bar is a rod or tube that connects the right and left suspension members. It can be used in front suspension, rear suspension or in both suspensions, no matter the suspensions are rigid axle type or independent type. The ends of the anti-roll bar are connected to the suspension links while the center of the bar is connected to the frame of the car such that it is free to rotate. The ends of the arms are attached to the suspension as close to the wheels as possible. If the both ends of","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127634399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Centrifugal Pump for Pulp Handling in Paper Plant.","authors":"D. Raju, Y. Vijaya, V. Sreenivasulu, G. Rao","doi":"10.11127/IJAMMC.2013.02.074","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.074","url":null,"abstract":"","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127786296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Friction Stir Welding of Aluminum 6082 with Mild Steel and its Joint Analyses","authors":"Sajin G. Sajan, M. P. Meshram, Pankaj, P. Srinivas, S. Dey","doi":"10.11127/IJAMMC.2013.02.033","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.033","url":null,"abstract":"A B S T R A C T Friction stir welding is carried out on 6mm thick plates of Al 6082 alloy and mild steel, where various welding parameters like, tool rotation speed (rpm), welding speed (mm/min) have been optimized and a suitable range for all parameters is achieved. After welding, good samples are selected and small specimens are cut from it perpendicular to the weld direction for microhardness and tensile tests. In this research study, the significance of placing the material on advancing and retreating sides especially during the welding of dissimilar materials has been checked, with the help of microstructural characterization technique like energy dispersive spectroscopy (EDS) analyses","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131390354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and Optimization of Thrust force and Torque during Drilling of Aluminum 6061 Alloy Using Taguchi–Grey Analysis Approach","authors":"R. Sreenivasulu, C. S. Rao","doi":"10.11127/IJAMMC.2013.02.077","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.077","url":null,"abstract":"Drilling, a hole producing process is especially important because it accounts for a large portion of overall machining operations. Amongst all machining operations, drilling using twist drill is the most commonly applied method for generating holes for riveting and fastening structural assemblies. It is well known that the drill point geometry has a significant effect of the thrust force of a twist drill. The present research initiative in an attempt to investigate the relative significance of the drilling parameters such as point angle, clearance angle, speed, feed rate and drill diameter on the thrust force and torque using Taguchi-Grey relational analysis. Drilling operations have been conducted over a wide a range of cutting condition. Spindle speed varied in the range 600 rpm to 1000 rpm in 3steps, Feed rate varied from 0.3 to 0.6mm /rev in 3 steps. High-speed steel (HSS) drills of 3 different diameters (8mm, 10mm and 12mm) and different point angles have been used for drilling of 27 through holes on 10mm depth with variable combination of soluble oil mixing with pure water on Aluminum 6061 alloy. A drill tool dynamo meter was used to record the thrust force and torque. In grey relational analysis can be used to represent the grade of correlation between two sequences so that the distance of two factors can be measured discretely. In the case where experiments are ambiguous or when the experimental method cannot be carried out exactly, grey analysis helps to compensate for the shortcoming in statistical regression .Grey relation analysis is an effective means of analyzing the relationship between sequences with less data and can analyze many factors that can overcome the disadvantages of statistical method. Most of manufacturing industries perform a huge number of drilling operations in machine shops. The drilling technology has been studied to improve the cutting performance with optimizing the cutting parameters and the tool geometry. However, burrs are sometimes formed when the drill exits the work piece and the exit burrs have to be removed in the deburring process. The control of burr formation, therefore, has been strongly required to reduce the post process of the drilling operation. Many researchers have been made on burr formation so far. The earlier works associated the burr shape with the cutting parameters experimentally. Some mathematical models based on the experiments were presented to determine the cutting conditions. A statistical analysis was presented to estimate the burr height in the drilling process. Some of researches tried to associate the drill geometries with burr formations. A drill shape, which removed the chisel edge and increased the wedge angle and the web thickness, was designed to suppress burr formation and evaluated in cutting of some materials . From the point of view of the cutting force, the thrust at the end of the cut promotes burr formation in drilling of the plates. When the cutting chip flows upwar","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122375601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Literature Review on Analysis of Sensitization and Corrosion of Ferritic Stainless Steel (FSS) by Different Welding Processes","authors":"D. D. Balsaraf, S. Ambade, A. Patil, Y. Puri, P. Student","doi":"10.11127/IJAMMC.2013.02.048","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.048","url":null,"abstract":"This paper deals with the review of different literature. The review focuses light on analysis of sensitization and corrosion by the different authors for controlling sensitization and corrosion in ferritic stainless steel by using different welding processes. Besides the problem of low ductility and poor toughness of ferritic stainless steel, welds due to the microstructures characteristics of the weld section as a result of weld heat input rate and heat transfer rate factor , susceptibility to intergranular corrosion caused by the depletion of the chromium content of the weld matrix particularly in the HAZ is a major concern limiting the full deployment of the material in certain engineering application regardless its attractive economics combined with moderate strength and excellent corrosion characteristics of AISI 409 M. Ferritic stainless steel during welding (TIG,MIG, and SMAW) have been investigated. Its sensitization and corrosion can be evaluated by chemical exposure of the weld cross section. Then the characteristics of sensitization and corrosion can be analyzed using scanned electron microscope. This review concluded that variation in heat input resulted in significant changes in the mechanical properties of the weld which results on the sensitization and corrosion.","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116931365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis and Optimization of Ball Valve for Reengineering","authors":"Satish M. Silaskar, Akash S. Bage, Milind S.Deotale","doi":"10.11127/IJAMMC.2013.02.078","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.078","url":null,"abstract":"A B S T R A C T With the change economic scenario, the various factors are affecting the growth and survival of industry in India due to customer expectation and changes industrial processes/product were incapable of meeting today’s stringent customer demand for quality, reliability, cost, and timeliness. “Reengineering is the fundamental rethinking and radical redesign of business processes to achieve dramatic improvements in critical, contemporary measures of performance, such as cost, quality, service, and speed”. Due todimension of an existing valve body for reduction in weight. Also study of other parts manufacturing process method is require to develop by studying the existing processes for identifying the reengineering issue for improvement by quality, cost and design Comparing the result of analysis and optimize it with. In this paper consists of a case study conducted at Ball Valve manufacturing industry, Thane, an attempt is made in existing products technical specification, weight, cost and quality. increasing global and competitive environment reengineering being actively pursued by industries modeling and analysis of existing valve body. principal, working and function of valve. After studying the existing system and comparing with some theoretical We developed a Finite Element Model using computer aided design and engineering software (Pro/ENGINEER).Then the finite element analysis, simulation software (ANSYS/FEM) is use for determine to finalization of critical","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116772337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relevance of Nanoindentation Experiments in Materials Research-A Review","authors":"B. A. Prasad, A. Kumaraswamy, B. Babu","doi":"10.11127/IJAMMC.2013.02.029","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.029","url":null,"abstract":"A B S T R A C T Nano indentation is now commonly used for the study of mechanical properties of materials on the nanoscale.. It offers a direct measure of contact stiffness during the loading portion of an indentation test and, being somewhat insensitive to thermal drift, allows an accurate observation of small volume deformation. Nano scale damage caused by fatigue is of critical importance to the reliability of ultrathin protective overcoats and micro/nanostructures. The cyclic loading used in the nanoidentation makes the technique useful for the evaluation of nanofatigue. Methodologies of the nanoindentation technique used for the characterization of layered materials and nonhomogeneous composites are reviewed and discussed. Applications of the nanoindentation experiments to the measurement of contact stiffness, elastic modulus, hardness, creep resistance, and fatigue properties of the materials are presented. The nanoindentation in conjunction with nanoscratch and friction and wear tests, can be satisfactorily used for the materials characterization of magnetic storage and micro electromechanical systems (MEMS) devices and should find more application","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117164947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Evaluation of Stress Intensity Factor for Inclined-Edge Crack Geometry using Singularity Elements","authors":"N. Tatke, N. Kotkunde","doi":"10.11127/IJAMMC.2013.02.026","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.026","url":null,"abstract":"Edge cracks are more dangerous than interior cracks. Free edge close to the crack influences the stress field near the crack tip (since the free edge is traction free).In case of edge crack, the free edge is not only close to the crack, but it intersects the crack. Evaluation of Stress Intensity factor for oblique edge crack geometry is done using commercial FEM software ANSYS and compared with analytical results. The conventional elements always underestimate the sharply rising stress-displacement gradients near the crack tip. Therefore, in order to produce this singularity in stresses and strains Barsoum elements were employed which involves shifting the mid-side nodes to the quarter point locations. It observed that stress intensity factor found by FEM method has good agreement with analytical results.. The singular order of stresses near the interface is a good way of understanding of failure initiation; however, in engineering applications usually the knowledge of singular orders is not enough for the prediction of failure initiation. As an example in the case of homogeneous cracks, the singular order is -1/2 which remains constant irrespective of the surrounding environment and outside loading of the crack. These influential factors are reflected through the associated stress intensity factor of the cracks. Hwu and Kuo [1] have demonstrated several different kinds of examples such as cracks in homogenous isotropic or anisotropic materials, central or edge notches in isotropic materials, interface cracks and interface corners between two dissimilar materials. It is also shown that KI Evaluation Using Displacement etrapolation technique under adaptive dense mesh with Parallel Finite Element gives fairly accurate results [2]. Based upon the analytical solutions obtained previously for the multi-bonded anisotropic wedges and the well-known path-independent H-integral, Hwo and Kuo [3] provided a unified definition and a stable computing approach for the stress intensity factors of interface corners. The stress intensity factor calculations are usually limited to Linear Elastic Fracture Mechanics (LEFM). For a linear elastic material the stress and strain fields ahead of the crack tip are expressed as [4]. The singular order of stresses near the interface is a good way of understanding of failure initiation; however, in engineering applications usually the knowledge of singular orders is not enough for the prediction of failure initiation. As an example in the case of homogeneous cracks, the singular order is -1/2 which remains constant irrespective of the surrounding environment and outside loading of the crack. These influential factors are reflected through the associated stress intensity factor of the cracks. Hwu and Kuo [1] have demonstrated several different kinds of examples such as cracks in homogenous isotropic or anisotropic materials, central or edge notches in isotropic materials, interface cracks and interface corners between two dis","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125734414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geometrical Accuracy of Parts Produced by Rapid Prototyping Technique (Sls)","authors":"V. Kumar, A. Shirisha, P. IndA.","doi":"10.11127/IJAMMC.2013.02.084","DOIUrl":"https://doi.org/10.11127/IJAMMC.2013.02.084","url":null,"abstract":"A B S T R A C T The present work has been carried out to identify various geometrical characteristics of the parts produced by Selective Laser Sintering (SLS) technique using different process parameters like part built orientation and sintering temperature. A geometrical bench mark part with different shapes and features is produced by SLS process with polyamide powder material. The bench mark part is inspected using CMM to know the geometric errors like roundness, perpendicularity, parallelism, concentricity etc. Effect of build orientation and sintering temperature on various errors has been studied and reasons are analyzed. Suitable process parameters are suggested to produce the parts with better geometrical accuracy and these are very much useful in industrial applications.","PeriodicalId":207087,"journal":{"name":"International Journal of Advanced Materials Manufacturing and Characterization","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123503943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}