Papers Posted on - Oct / 2017


Author Name Amandeep Singh
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DOI http://dx.doi.org/10.11127/ijammc2017.10.01
Paper Title Evaluation Of Microstructural And Mechanical Behavior Of Some Magnesium Metal Matrix Composites
Abstract
Magnesium based metal matrix composites reinforced with different content of boron carbide (B4C) particles were prepared using stir casting route. Microstructure study was done to see the particle distribution in the T4 heat-treated state using optical microscope and SEM analysis. The fabricated composites showed nearly uniform distribution of B4C particles however some agglomerated regions were also found. The significant grain size reduction was observed with the addition of B4C particles. Mechanical properties of cast composites i.e. tensile strength and macro hardness were investigated. The Mg composites showed an increase in hardness, yield strength and ultimate tensile strength as compared to unreinforced Mg.
Keywords
Stircasting,Magnesium,Hardness,Tensilestrength
Author Name I. Esther
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DOI http://dx.doi.org/10.11127/ijammc2017.10.02
Paper Title An Eco Friendly Novel Metal Matrix Nano Composite Friction Surfacing Of Titanium Alloy
Abstract
Friction surfacing process is a friction based solid state coating process, where no fusion of the materials occur. The process is eco-friendly in nature due to the absence of shielding gas as well as the formation of toxic gases during the melting of the coating materials thereby creating new avenues for minimizing environmental pollution. The process avoids melting of the coating material and it is free from most of the problems as encountered in the conventional surfacing processes. This produces coatings with no dilution combined with enhanced mechanical properties. Titanium alloy (Ti 6Al-4V) offers a combination of high strength, light weight, wear and corrosion resistance properties. The aluminium alloy based metal matrix nano composites (AMMNCs) are found to be suitable wear and corrosion resistant material especially for aircraft and space applications. The present work pertains to production of friction surfaced coatings on titanium alloy by using aluminium metal matrix nano composites AA2124-B4C for improving the wear and corrosion resistance of the titanium alloy. The process parameters were then optimized for achieving the desired properties of surfaced coatings. The coating was characterized by metallography, dry sliding wear and potentiodynamic polarization testing. The coating exhibited excellent wear resistance, which is attributed to composite deposited on the surface. The coating was also found to have adequate corrosion resistance. Microstructures obtained from various zones of the surfaced layer were correlated to the enhanced properties.
Keywords
Eco friendly, Friction Surfacing, Metal Matrix, Nano composites, Wear, Corrosion, Microstructure.
Author Name M. Indra Reddy
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DOI http://dx.doi.org/10.11127/ijammc2017.10.03
Paper Title Mechanical properties of short and randomly oriented Borassus Flabellifer (Asian Palmyra) Sprouts fiber reinforced epoxy composites
Abstract
Fiber-reinforced composite materials consist of fibers of high strength and modulus embedded in or bonded to a matrix with distinct interfaces (boundaries) between them. In this form, both fibers and matrix retain their physical and chemical identities, yet they produce a combination of properties that cannot be achieved with either of the constituents acting alone. The objective of this study is to evaluate mechanical properties such as tensile, flexural and impact properties of natural fiber (Asian Palmyra sprouts) reinforced composites (NFRC). The fiber content in NFRC was varied from 20 to 40 by % volume. The results revealed that the tensile, flexural and impact strength increased with increase in fiber content. Further, the density of the natural fiber was measured by theoretical method.
Keywords
Keywords: Natural fiber reinforced composites (NFRC); Mechanical Properties; Asian Palmyra Sprouts fiber; Epoxy resin
Author Name Piyush Gulati
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DOI http://dx.doi.org/10.11127/ijammc2017.10.04
Paper Title Investigation of the Effects of Plunge Depth on the Resulting Temperature Distribution, Microstructure and Mechanical Properties of Friction Stir Welded AZ31B Magnesium Alloy
Abstract
Friction stir welding is an appropriate joining technique to join metals and non metals especially soft alloys and that too without defects. Recently, in many industrial applications such as, in automotive, marine and aerospace, magnesium alloys are used widely due to their excellent mechanical properties and light weight. In the present research, Friction stir welded joints of AZ31B magnesium alloy plates were fabricated. The effect of varying the plunge depth on the resulting temperature distribution, microstructure and mechanical properties of the welded specimens were evaluated. Temperature distributions were plotted for different zones of the welded specimens. The grains in the weld nugget were found to be fine and equiaxed due to recrystallization and severe plastic deformation. Tensile strength of the welded specimens was found to be lower as compared to the base material
Keywords
Keywords: Friction stir welding, microstructure, magnesium alloy, tensile strength
Author Name P.S.Yadav
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DOI http://dx.doi.org/10.11127/ijammc2017.10.12
Paper Title The Effect Of Nano Sio2 On The Mechanical And Tribological Properties Of Hybrid Polymer Matrix Composites: A Review
Abstract
Composite are exciting materials finding widespread applications because of their enhanced mechanical, dynamic and thermal properties over the conventional materials. Polymer Matrix Nano Composites (PMNCs) were developed by uniform dispersion of nano silica particles with different weight percent in epoxy matrix using hand lay-up and compression moulding technique were showing remarkable improvements in the mechanical properties like tensile strength, flexural strength, and impact strength. The nano particles show considerable improvement in properties when reinforced with carbon/Kevlar fabric/epoxy composites, because of their larger surface area to volume ratio, very high specific strength, hardness and stiffness. This performance indicates the good adhesion strength and chemical compatibility of the nano-silica particles with the polymer matrix. Being environment friendly, applications of nano composites offer new technology and business opportunities for several sectors, such as aerospace, automotive, defence, electronics and biotechnology industries. Hybrid composites that exploit the synergy between natural fibres in a nano-reinforced polymer can lead to improved properties along with maintaining environmental appeal. This review article involves the detailed study of polymer matrix composites and epoxy resin hybrid nano composites for engineering applications
Keywords
Polymer matrix nano composites, Hybrid composites, Nano particles, Kevlar fibre, Hardness, Impact strength.
Author Name Keyvan Seyedi Niaki
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DOI http://dx.doi.org/10.11127/ijammc2017.10.05
Paper Title Optimizing Tensile Strength and Corrosion Resistance of API 5LX52 Steel Pipe after Repair Using MMAW
Abstract
In the present study, the effect of multiple repairs on the microstructure and, thus, strength and corrosion resistance of API 5LX52 steel is investigated using manual metal arc welding (MMAW). To this end, four sets of specimens were utilized for the tensile and corrosion tests: control, once-, twice- and three-time-repaired specimens. The result showed that strength was decreased by repeating the repair. Also, the corrosion resistance of the twice-repaired specimen was higher than that of other repaired specimens. Therefore, considering maximum tensile strength and corrosion resistance, the use of micro-alloy electrodes with twice repair is recommended to achieve the best result.
Keywords
Manual metal arc welding; Micro-alloy; Corrosion
Author Name Prakash Shanker Kumar
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DOI http://dx.doi.org/10.11127/ijammc2017.10.06
Paper Title Analysis of Sheet Metal Forming of Interstitial-Free Steel and Extra-Deep-Drawing Steel Using ABACUS
Abstract
Sheet metal forming is one of the most important processes in automobile industries. Often the components are formed in multistage. As the plastic deformation is path dependent, the prior deformation affects the capability for further (second stage) deformation without defects. It is further important to know the forming limit in case of multistage deformation. The tradition forming limit diagram (FLD) is useful for proportional and signal stage deformation, however, often it does not provide a satisfactory result in non-proportional, multistage deformation. In my present work Experiments such as Uni-axial Tension test in Rolling, Transverse; A Diagonal direction of the sheet, Hole Expansion Ratio, Circular Cup Drawing and Forming Limit Diagram will be performed. The effect of Blank Holding Force and Punch displacement on subsequent deformation will be studied using Experimental, Numerical, and Simulation methods. Hill’s 48 yield criteria will be used to find the Anisotropy value. ABAQUS will be used for simulating these processes.
Keywords
Anisotropy, Formability, Simulative test, Simulation, ABAQUS.
Author Name Ravindra Kumar Bharilya
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DOI http://dx.doi.org/10.11127/ijammc2017.10.07
Paper Title Development, Testing and Characterization of Multi-Layer Functionally Graded Nano Material (FGNM) Laminates
Abstract
This investigation intends for the structural utility based development of a multi-layered sandwich structure of Functionally Graded Nano Materials (FGNM) by Compressive Moulding technique. Design and development of laminate includes standard sonification, moulding layer by layer and with conventional method of curing with a little improvement based on laminate requirement. The material and mechanical properties investigations for the observation of different characteristics by conducting various tests and the analysis after characterisation of each layer with microstructural study of interface by scanning electron microscope (SEM) have been performed.
Keywords
Keywords: Functionally Graded Multi-Layered Laminate; FGNM; Nano alumina; Compressive Moulding Technique
Author Name Raviprakash M
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DOI http://dx.doi.org/10.11127/ijammc2017.10.08
Paper Title Microstructure, Hardness and Tensile Behavior of Micro B4C Reinforced Al7020 Alloy Composites
Abstract
Micro particulates reinforced metal matrix composites are well suited for large number of automotive and marine applications. In the current study, an investigation made on fabrication of B4C reinforced Al7020 alloy composites and evaluation of properties. Al7020- B4C composites were synthesized by melt stirring process. The weight percentage of B4C particulates were varied in steps of 2 and 4 %. Microstructural characterization was carried out by using scanning electron microscope and energy dispersive spectroscope. Prepared composites were evaluated for hardness and tensile strength as per ASTM standards. Scanning electron micro photographs revealed the distribution of B4C particulates in the Al matrix and were confirmed by EDX analysis. B4C particulates reinforced composites were shown more enhanced properties as compared to A7020 alloy
Keywords
Keywords: Al7020 Alloy, B4C particulates, Microstructure, Hardness, Tensile Strength
Author Name Ashwini A. Rote
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DOI http://dx.doi.org/10.11127/ijammc2017.10.10
Paper Title Milling Process Parameter Optimization Using Taguchi Method
Abstract
The present study focused on optimization of end milling process parameters to improve Surface finish and Dimensional deviation of Cam indexing drive casing. The effect of three machining parameters namely Spindle speed, Feed rate and Depth of Cut on Surface finish and Accuracy of dimensional deviation were investigated by using Taguchi Design approach. An orthogonal array, Signal to noise (S/N) ratio and analysis of variance (ANOVA) were employed to analyze the effect of these end milling process parameters. The analysis of results shows that Spindle speed and Feed rate are most influencing parameters on response variables than Depth of cut. Validation of results is done by using regression analysis and experimental production.
Keywords
Keywords — ANOVA; End milling operation; Regression analysis; Surface Roughness; Taguchi Design;
Author Name Sunil Kumar
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DOI http://dx.doi.org/10.11127/ijammc2017.10.11
Paper Title Synthesis And Characterization Of Non Rare Earth Bcno Phosphor Materials Using Ultra Sonication Method
Abstract
Boron Carbon Oxynitride (BCNO) phosphors were synthesized at 750°C using ultra sonication mixing of boric acid, citric acid and urea as raw materials. The synthesized BCNO phosphor has orthorhombic structure and crystallinity of samples increased with increasing ultra sonication time period. In FTIR spectra influence of B – C, B – N bonds increased with increasing sonication time and showed the existence of B, C and N elements in phosphor materials. Band gap can be tuned by changing the ultrasonic vibration time. Photoluminescence (PL) intensity increased with increasing the sonication time.
Keywords
BCNO phosphor, synthesis, sonication, crystallinity.