The present study aims to multi factor optimization for preparation of aluminum matrix composites (AMC) by reinforcement of SiC/ Al2O3/ Al2O3+ SiC particles having dual particle size (DPS) and triplicate particle size (TPS) based upon signal to noise (S/N) ratio analysis. In this work the amalgamation of fused deposition modelling (FDM) and vacuum moulding (V-process) assisted stir casting (SC) has

The current research investigates the effect of electric discharge machining (EDM) and material parameters on material removal rate (MRR), tool wear rate (TWR) and surface roughness (Ra) while machining the novel aluminium rock dust composite. Experiments have been performed in Vidyunt EM 150 EDM machine by considering parameters namely discharge current, pulse ON time, pulse OFF time, reinforcement

The aluminium composites are being used for various number of applications like automobiles, aerospace, marine, construction, etc. Manufacturing industries keenly focus on improving their product quality by means of strength with reduction in cost. The hybrid metal matrix composites paved way for achieving those objectives through reinforcement of existing traditional materials. This work is also a

The preparation and properties of latex modified concrete (LMC), nano silica modified concrete (nSMC) and silica-latex modified concrete (SLMC) have been investigated in this study. Properties like compressive strength, tensile strength, flexural strength, thermal characteristics and water absorption have been evaluated. The 7-day compressive strength has increased 37% (30.15 N/mm2) after the inclusion

In this paper, a decagonal geometry has been designed for liquid sensing. The liquid analytes that are sensed are ethanol, benzene and water as they are the most used analytes in the chemical and biological industries. Firstly, a decagonal structure has been designed and neff and sensitivity of this structure has been calculated. Then, the core structure has been modified and decagonal, octagonal and

Effect of ultra-fine structure obtained by surface mechanical attrition treatment(SMAT) on microstructure, yield strength (YS), ultimate tensile strength (UTS) and microhardness of hypoeuctectoid steel have been studied in this paper. Surface alteration has been obtained by vibratory SMAT equipment with particular parameters for similar class of material. The SMAT has been carried out for different

Morphology tuning is one of the innovative techniques to overcome challenges of a pristine graphitic carbon nitride (g-C3N4) as a photocatalyst. In this study, a unique pipe-like C3N4 have been fabricated using a facile, environmentally friendly and scalable approach by treating dicyandiamide (DCDA) with ethylene glycol and nitric acid. The pipe-like C3N4 samples have been possessed unique structural

Dry sliding wear behaviour of aluminium matrix composites (AMCs) prepared by stir casting with 4% as fly ash reinforcement has been studied in the work. Dry sliding wear tests have been conducted using a pin-on-disc wear-testing machine to study the effect of changeable process parameters such as load, time, and sliding velocity, which have been used as design variables on the output parameters wear

Despite having significant role to measure the forces in tillage, medical and various diagnostic studies, force dynamometers are extensively employed in cutting-force monitoring and measurement. In this paper, an investigation of various cutting-force measuring dynamometers based on characteristics and design has been carried out. Characteristic based investigation helps in deciding about various important

The method of carbon fiber reinforced polymer (CFRP) strengthening is a technique that is rapidly developed and used for strengthening of steel structures in recent years. Most previous research in the area of CFRP strengthening of steel structures has been conducted on the behavior of flawless steel structures. Based on the author's knowledge, the behavior of CFRP-strengthened deficient square hollow

An approach has been made in this work to analyze sensitivity drift in a Pd decorated SnO2 sensor developed for detection of linalool, a significant aroma compound in tea.  Prior to the drift analysis, an attempt has been made to choose the optimum loading percentage of Pd in SnO2 for linalool sensing.  An inexpensive and simplistic hydrothermal method has been used to develop five different Pd decorated

Frequently, black sand from coastal deposits is a magnetic ore with a complex structure that is composed principally by iron, titanium and silica oxides, and metals such as vanadium, chromium, nickel, strontium, etc. This material could be used in oxidation/reduction processes as a photocatalyst doped naturally. However, its surface area low and the mass transfer constraints caused by the cluster formation

In the present work, the AISI 4150 steel has been pack-borided in the temperature range of 1123-1273 K for a treatment time of 2 to 8 h. The mixture of powders containing 20% B4C, 10% KBF4 and 70% SiC has been used for producing a single boride layer (Fe2B) at the surface of AISI 4150 steel. The presence of Fe2B phase has been confirmed by XRD analysis. The SEM observations have been done to investigate

The present study investigates the influence of adding multi-wall carbon nanotube (MWCNT) into the dielectric fluid of electric discharge machining (EDM) in terms of material removal rate (MRR), surface roughness (SR) and surface topology of EN-31 die steel using Cu electrode. A customized rotary electrode set-up has been developed to compare the performance improvement of powder mixed rotary electrical

In this research work, brake pad friction composite materials based on binary and ternary combinations of ceramic-organic fibres have been realized, following evaluation of braking performance parameters on Krauss friction testing machine adopting ECE R-90 regulations and PVW-32 standard test protocol. The obtained experimental performance data has been further used for the assessment of performance

This report focuses on fabrication, characterization, and fundamental optical, structural and thermal properties of PVA/calcium aluminum doped zirconate (CaAl2ZrO6) nanocomposites (NCs) films. The PVA-NCs with different amounts viz., 2, 4, 6 and 8 wt% of calcium aluminum zirconate (CaAl2ZrO6) have been fabricated using solvent casting technique. The NC films structural and morphology have been investigated

Rapid prototyping (RP) have been attracting attention in the manufacturing community because of their capability to reduce the lead time of product development. Present work is an effort to understand the influence of process variables like infill pattern, layer thickness, build orientation and infill density on dimensional accuracy (DA), flatness and cylindricity. Taguchi method orthogonal array L9

Debonding failures are a common problem in concrete bridge decks strengthened with adhesively attached carbon-fibre reinforced polymer (CFRP) strips. Accordingly, in this study, rectangular concrete slabs strengthened with CFRP have been experimentally evaluated to simulate the strengthening of T-beam and box girder slabs. The resulting static load data have been used to compare the effects of four

The conventional hydrothermal process for the synthesis of zinc oxide (ZnO) nanostructures has been a slow process and provides less control in terms of shape, size and nucleation time. Whereas, synthesis through microwave heating takes only a few minutes to produce high quality, ultra-pure zinc oxide nanostructures. In this study, we have presented a protocol to fabricate various ZnO nanostructures

The micro-structural parameters such as reinforcement shape, size, distribution, volume fraction, property mismatch, aging condition, bonding strength, and whisker orientation can influence the fatigue life of discontinuous reinforced metal matrix composites (DRMMCs). The strengthening effect plays a vital role in predicting the fatigue behaviour of DRMMCs. The modified shear lag (MSL) and enhance

Ductile fracture, such as micro-cavities and micro-voids, inevitably exist and evolve under tensile stress state in metal forming. Ductile fracture sways the mechanical performance of 52100 bearing steel. It is necessary to investigate the influences of strain rate and deformation temperature on both ductile fracture and microstructure evolution. Uniaxial hot tension tests were performed, in which

Owing to the complexity of grinding process, it has been very difficult to predict the optimal machining conditions which have been resulted in smooth surface finish, accurate geometric measurements and higher production rate. In this work, empirical models for surface roughness, roundness error and metal removal rate have been developed based on regression analysis. These models have been associated

The microstructure, fracture morphology and tensile fracture process of high manganese steel with single-phase austenite after water toughening have been investigated by optical microscope (OM), scanning electron microscope (SEM) and transmission election microscope (TEM). The results have shown a large number of deformation twins forming within the austenite matrix after tensile fracture, which have

In this study, laser remelting has been performed on the Metal Inert Gas welded (MIG) low carbon mild steel at varying laser power inputs (400 W & 600 W). To investigate the influence of laser remelting on the joint properties, optical microscope observation, scanning electron microscope observation, microhardness measurement and mechanical tests have been conducted. The experimental results revealed

To overcome the difficult deformation of common Mg alloys, the Mg-5Li-1Al (wt %) alloy sheet with good strength-ductility balance has been successfully fabricated by two-pass extrusion at 280 °C. The microstructural evolution, texture, mechanical properties and stretch formability of the extruded sheets have been investigated. The results show that a refined microstructure can be obtained by two-pass

In this analysis, an unsteady flow over a stretching plate with slip effect in CNT-water nanofluid has been examined. A set of ordinary differential equations have been obtained by applying the convenient similarity variables. Perturbation technique has been used to find numerical solutions of the study by applying Runge-Kutta fourth order scheme. Plots of velocity and temperature distributions for

In this paper, an influence of surface topography of ball rolling bearing raceways of the vibration values has been examined. Experiments have been preferment using series of bearing types 6304. Surface topography of bearing raceways has been measured using a stylus profilometer Talysurf PGI 1230. The 2D and 3D roughness and waviness parameters have been analyzed. The vibration measurements of ball

Rapid urbanization and economic growth are affecting an exceptional increase in the production of municipal solid waste (MSW), including packaging waste globally. Nations have a comparatively higher GDP incline to generate vast quantities of MSW. Forecasts appearance that the production of MSW through main metropolitan will increase from 1.3 and 2.2 billion tons, respectively in the year 2012 and 20251

In this work, high velocity oxy fuel (HVOF) method based spray coatings namely Cr3C2-25NiCr and WC-10Co-4Cr have been deposited on AISI304 turbine steels. An attempt has been made to analyze the coatings under accelerated slurry erosion conditions by employing a laboratory-developed slurry erosion testing set-up. The testing has been performed under varied conditions of slurry concentration, impact

The present study has envisaged an advance technique, gas injection bottom pouring vacuum stir casting process, for the casting of metal matrix composite (MMCs). This process has been eliminated several manual processing steps of conventional stir casting hence concerns about the workers’ safety and its bottom pouring mechanism & vacuum mould chamber improve the properties of the fabricated MMC. An

The main objective of this research is to find experimentally the effect of impact damage on the flexural strength of glass fiber/epoxy laminated composite materials at two different test conditions. The other objective is to determine the critical buckling load of laminated composite material after impact loading. Thus, the loss of flexural and buckling performances of the damaged material has been

To study the law of corrosion on the mechanical properties of the components used in spatial steel structures and obtain the load-carrying capability of circular steel tubes under varying degrees of corrosion, experiments on a periodic spray have been designed to study the accelerated corrosion and axial loading of tubes without a protective layer. The experiment results show that the yield and ultimate

In the present study, the AISI D2 steel has been treated by the plasma paste boriding process using a gas mixture of 70% H2-30% Ar with 70% of borax and 30% SiC. The boriding treatment has been carried out at 700, 750 and 800 °C for an exposure time of 3 to 7 h. The plasma paste borided samples have been investigated by various techniques such as scanning electron microscopy, optical microscopy, XRD

The additive manufacturing known also as “3D printing” or “rapid prototyping” is a present manufacturing method (compared to classic manufacturing methods) where layers of material are deposited at a time (successively) until a finished product is obtained. Depending on the phenomenon, material (in solid, liquid or powder state) used by the 3D printing equipment, a solid part, can be achieved using

Single point incremental forming (SPIF) process is an innovative and dies-less forming technique to produce various useful shapes for small batch size economically. This process exempts expensive and complex tooling which is used in traditional sheet forming processes. Study of forming force and thickness reduction of the components formed by SPIF process would help the process engineers to provide

Interest in using renewable resources such as natural fibers and agro-forest residues as reinforcements/fillers in polymer matrices has grown considerably for making wood alternatives in view of their low cost, easy availability, saving in energy and pollution free-production. In this paper, an overview on the global perspective of natural fiber reinforced composites has been outlined with reference

Wire electrical discharge turning set-up has been developed by modifying the conventional five axes CNC WEDM machine. The main objective of this setup is to achieve cylindrical forms on hard to cut materials. This work focuses on the study of effect of input process parameters like pulse on-time, pulse off time, gap voltage, spindle rotational speed on output responses like surface roughness, material

Mini specimens of 5052 alloy have been used to study the mechanical behaviour for cladding materials of research reactor. The problem that arises in the manufacture of the mini specimens is the deformation effect after shear cutting process. The objective of this research is to obtain characteristics of mini specimens of 5052 alloy, i.e. microstructure, hardness and tensile strength. The results have

Cutting tools have been employed in wood processing must be corrosion and wear resistant due to the acidic composition of wood and the wear generated during cutting, which lead to the deterioration of steel saws. Hydrogenated amorphous carbon films possess mechanical, tribological and barrier properties that can increase the hardness, wear and corrosion resistance of this type of tool. This work has

Mathematical investigation has been presented to examine the magnetohydrodynamic boundary layer flow of viscous nanofluids bygone a nonlinear stretched plate among cumulative impact of viscous dissipation and joule heating. Physical formulation produced a system of partial differential equations which has been converted into a set of ordinary differential equations through employing suitable similarity

This study involves the application of replacement material to cement which eliminates the carbon-dioxide emissions. Cement production industries alone give out 5 to 8 % of greenhouse gas into the atmosphere globally. Naturally, geopolymer concrete emits very low greenhouse gas compared to ordinary portland cement (OPC). Therefore, geopolymer concrete is greatly ecological and alternative material

In the present study, the corrosion behaviour of CoCrMo ASTM F75 alloy with boride diffusion layer and under simulated physiological conditions has been investigated using electrochemical methods. Corrosion has been analyzed using Tafel and electrochemical impedance spectroscopy (EIS) curves. The corrosion resistance optimization of boride diffusion layer on ASTM F-75 alloy using a central composite

The present work aims to study the influence of different geometrical, technological, and material parameters on residual stress in tungsten inert gas butt-welded aluminum cylinder. In order to present a simple analytical model to estimate the welding residual stress, the Taguchi L18 array has been employed with one 6-level factor and four 3-level factors. A 3D coupled thermo-mechanical finite element

Mo-Mn metallization of alumina ceramics of different purity has been performed at 1400 °C for 10 min in moist hydrogen and nitrogen atmosphere. Nickel coating has been applied onto the metallized alumina ceramics at 1000 °C for 1 h in a reducing hydrogen atmosphere. Finally, metallized and nickel coated alumina ceramics has been brazed with another metallized and nickel coated alumina ceramics using

More researchers have been worked to increase the quality of the machined composite materials. In this paper, a comparative experimental study of mechanical techniques over the laser techniques has been performed in the drilling process by using the carbon fiber reinforced polymer (CFRP). In order to identify the best process among the mechanical drilling (MD) and laser drilling (LD) technology various

The effect of process parameters and vanadium carbide on hardness, toughness and structural properties of the tungsten carbide-cobalt (WC-Co) nanocomposite has been investigated using micro-hardness tester, X-ray diffraction and scanning electron microscopy (SEM) with attached energy dispersive spectroscopy, respectively. To suppress grain growth, a high percentage (upto 10 wt. %) of vanadium carbide

AISI H10, H11, H21, and D2 have been vacuum oxy-nitrocarburizing at 570 °C in cycling gas flow manner. Metastable diagram calculations belonging to Fe-N-C and Fe-N-C-X systems (X = Cr, Mo, W), have been performed by using “phase diagram” module of FactSageto predict the steels’ phase compositions. The reactive diffusion of both N and C into the tempered martensite has been discussed on the base of

The inter-row delay timing plays a pivotal role in any blast round as it not only influences the mechanism of fragmentation, but also offers a vast potential in improving the overall results of fragmentation. It is in this perspective that the current study presents a comparative investigation of the influence of inter-row delay timing on fragmentation in two different strength sandstone formation

The paper presents a new method for modelling oxide layers for tribology related needs. The most recent world trends in the machine-building sector, in particular with reference to piston machines, are heading towards reducing their lubrication and cooling. Hence, a question arises, what the upper layer of a ceramic material should be like in order to maintain low wear and low frictional resistance

The relationship between the late-age hydration and strength development of cement-slag mortars have been investigated by measuring the compressive strengths and the non-evaporable water contents. The results show that the late-age strength increases with increasing the slag content. Increasing the fineness of slag makes greater contribution to the late-age strength improvement at high water to binder

In present experimental investigation, wear characteristics of Al 7075-T6/Eggshell/SiC/Al2O3 hybrid composites (Al 7075-T6 as base metal with eggshell particles wt. % 0.5, 1and 1.5, average particle size ~ 60 µm, SiC particles wt. % 1, 1.5 and 2, average particle size ~ 65 µm and Al2O3 particles wt. % 1.5, 2 and 2.5, average particle size ~90 µm) synthesized through electromagnetic stir casting route

Electric discharge machining (EDM) is a non-contact type manufacturing process used to machine hard materials. Obtaining surfaces with the desired surface finish is the primary challenge when employing this process in any industry. Powder blended EDM, a process in which properties of dielectric are varied by blending it with an appropriate weight of powder, is one among many methods coined to overcome

Iron-based shape memory alloys are the materials that can be especially used in civil engineering structures and pipe coupling because of their good mechanical properties and their low price compared with Ni-Ti and cooper-based alloys. However, their applications have been remained limited so it is very important to determine the wear behaviours of this family of materials. This paper presents friction

Minimum quantity lubrication (MQL) is an alternative over dry machining due to economic and ecological sustainability. In the current research, a comparative investigation has been carried out on machinability and surface integrity aspects of hardened AISI 4340 steel using PVD TiAlN coated carbide inserts during dry and MQL assisted hard turning. Under the dry condition, turned surface has been encountered

In the present study, butt weld produced by friction stir welding of aluminium 1060 alloy has been analyzed. Destructive test, non-destructive test, and SEM image analysis methods have been implemented to investigate the microstructural evolution and mechanical properties of welded joints. The effects of tool rotation speed, welding speed, tool pin profile and tool offset have been investigated to

Incremental sheet metal forming (ISF) is one of the best flexible manufacturing processes used to convert a sheet metal into required final shape using tool movement. In incremental sheet metal forming process, a single pointed forming tool is allowed to move over the sheet metal as per the pre-programmed numerical control of a computer. The advantage of making any complex part without die confirms

This paper presents experimental investigation on improvement of mechanical properties of both plain cement concrete (PCC) and fibre reinforced concrete (FRC) confined with un-plastisized poly-vinyl chloride (UPVC) pipes, which has been considered for enhancing durability of concrete structures. UPVC pipes with outer diameter 160 mm and length 300 mm have been used with three different average thicknesses

This work aims to develop a carbon fiber/epoxy composite reinforced by metal fillers (Copper/Stainless steel) in order to improve the tribological properties. For this, a tribological study has been conducted using a ball-on-disc configuration. The surface of the material has been modified by deposing a layer of metal powder during manufacturing. For a better understanding of the wear mechanisms, the

In this paper, an attempt has been made to numerically investigate the transient dynamic response of carbon-basalt/epoxy laminated composites subjected to low velocity impact. Carbon laminates are expensive hence, inclusion of cheaper basalt to obtain an improved, yet economical laminate is necessary. Finite element analysis (FEA) technique has been employed to simulate the laminated models. Loading

In-situ foamed geo polymers have been produced from fly ash/slag blend, surfactant, hydrogen peroxide (H2O2) and sodium silico fluoride in an alkaline medium and evaluated their physico-mechanical, micro structural and fire characteristics as a function of foaming agent. Isothermal calorimetric response has been indicated that the rate of geo polymerization for the foam slurry was ~25% more than its