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1843 articles for “Composites”
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Performance Analysis of Abrasive Water Jet Machining Process for AISI 304 Stainless Steel
Abstract: Abrasive waterjet machining (AWJM) is a non-conventional machining process capable to machine wide range of difficult-to-cut materials such as ceramics, alloys, composite materials, etc. This paper investigates the effect of various process parameters on kerf taper, surface roughness and power consumption which are important performance measures in abrasive waterjet machining. The variable process parameters considered here include water pressure, traverse speed, stand-off distance and abrasive flow rate. Experiments were conducted …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 2, 2017 · pp. 53–55 Read article
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Ce-TZP/Al2O3 Nanocomposites for Biomedical Implants
Abstract: Ceramic materials are widely used for biomedical applications because of their remarkable biological and mechanical properties. Titanium and titanium alloys are widely used for fabrication of dental implants. The foremost disadvantage of titanium is its dark greyish colour, negative delicate tissue states of the gingiva may prompt to compromised aesthetics. Anyway these days Zirconia implants were brought into dental implantology as an option in contrast to titanium implants. Zirconia seems …
Published in Journal of Experimental & Applied Mechanics · Vol. 10, Issue 2, 2019 · pp. 1–6 Read article
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RADAR IMAGING THEORIES AND PRINCIPLES OF OCEAN WAVES CAPILLARY WAVES AND TYPES OF RADAR
Abstract: Capillary waves caused by the wind were measured in a wave tank. The capillary waves' height, slope, and frequency composition were all measured. The wave heights (from trough to crest) were found to be between 0.06 and 8.8 mm for winds between 2.2 and 7.6 m/sec. Wind speed affects the distribution of frequencies (wavelengths), with more high frequency waves occurring at faster wind speeds. An S-shaped curve with the sharply …
Published in Journal of Experimental & Applied Mechanics · Vol. 13, Issue 2, 2022 · pp. 6–10 Read article
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Effect of Layering of Reinforcement on Bearing Capacity of Shallow Footing Resting on Sand
Abstract: The study was done to investigate the performance of reinforced soil foundation. The construction of reinforced soil foundation has a cost effective alternative to conventional methods. Performance characteristics were improved by using one or more layers of non-woven geotextile placed beneath the footing to create a composite material. The reinforcement in the soil interacts with the soil and is resisted by friction, adhesion or passive / bearing capacity. To study …
Published in Journal of Geotechnical Engineering · Vol. 5, Issue 2, 2018 · pp. 15–19 Read article
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REVIEW OF NANO MATERIALS FOR PREDICTING STRENGTH AND VOLUME CHANGE BEHAVIOUR OF EXPANSIVE SOILS
Abstract: Expansive soils are problematic to Civil Engineering by increase and decrease its volume due to movement of water in and out. This kind of soils is portrayed by its outrageous hardness while drying and with high swelling process on the wetting. Several researches during the past 20 years have proposed different nano materials for the soil stabilization approaches to counter the hazards present in the soils. This paper elaborates various …
Published in Journal of Geotechnical Engineering · Vol. 5, Issue 3, 2018 · pp. 8–13 Read article
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Soft Computing Based Prediction of Deviator Stress of Waste Plastic Reinforced Sand
Abstract: In the recent past, the soft computing techniques have received a significant attention for solution of the geotechnical stability problems. Following the trend, the present study tries to explore the use of different soft computing techniques such as random forest regression, support vector machines (SVM) RBF kernel, SVM poly kernel and M5P model tree for the prediction of deviator stress of sand reinforced with waste plastic strips. The deviator stress …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 3, 2019 · pp. 1–7 Read article
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Near-Surface Seismic Refraction Tomography; a case study for geotechnical application
Abstract: Usually, among geophysical techniques, seismic refraction methods are used to investigate near surface geology for engineering purposes. In these study physical parameters, longitudinal seismic wave velocities were used to characterize the shallow subsurface layers for geotechnical application. The physical response of subsurface materials varies as the structure, porosity, fluid saturation, composition and tie-up vary. These variations primarily viewed in the first arrival time of seismic waves. With the necessary steps, …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 2, 2019 · pp. 18–26 Read article
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VARIATION OF THERMAL CONDUCTIVITY WITH POROSITY
Abstract: Thermal conductivity in porous media as a function of the grain size and porosity has been studied establishing a relation between these two parameters. The study has been developed for a homogeneous porous medium with grain size in a very close range of particle diameter. The study has been extended from very small particles to large ones, to cover most of the real grain size. As a result of this …
Published in Journal of Geotechnical Engineering · Vol. 7, Issue 1, 2020 · pp. 47–58 Read article
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Experimental Investigation of High Strength Geopolymer Concrete
Abstract: This paper presents the experimental studies concerning high strength in geopolymer concrete. So far many researches were carried out in geopolymer concrete and also it enhances the strength and durability of OPC concrete. Several compositions of geopolymer concrete mixes were executed by varying the percentage of fly ash and GGBS. By finding the optimum percentage of fly ash and GGBS from the experimental results, the mechanical properties of geopolymer concrete …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 2, 2017 · pp. 29–31 Read article
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Effect of Reinforcement on Bearing Capacity of Sand
Abstract: The reinforced earth concept, which is now being evaluated with increased significant encompasses formation of a composite of a soil with tension resistance reinforcing elements such as metallic and nonmetallic strips, bars, rods fibers or nets in the soil. The objective of using the reinforcement is to supress the normal tensile strains in the soil mass through frictional interaction. Flexible nature of reinforced earth mass enables it to withstand large …
Published in Journal of Geotechnical Engineering · Vol. 1, Issue 3, 2014 · pp. 8–12 Read article
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Application of E-Foundry Based Simulation for the Development of Gating System Design for Endshield FG200 Casting
Abstract: Every casting, by virtue of its geometry, shape, basic material, composition and process has an optimal method. Casting should be designed to achieve controlled progressive directional solidification so that it becomes free from solidification related defects particularly shrinkage porosity. In this research project, endshield FG200 grey casting is being simulated using efoundry for the development of new gating system design. This new gating system ensures directional solidification in casting, thus …
Published in Journal of Mechatronics and Automation · Vol. 4, Issue 3, 2017 · pp. 8–17 Read article
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Optimization of WEDM Process Parameters Using a Hybrid Multi-Criteria Decision Making Approach
Abstract: The effectiveness of the manufactured parts is typically measured by more than one performance characteristics. Hence the manufacturing engineers frequently experience the difficulty in optimizing the multiple responses at a time. The present work is to explore the effect of wire electrical discharge machining (WEDM) process parameters in machining of Aluminum metal matrix composite (AMMC). The multiple performance characteristics of material removal rate (MRR) and surface roughness (Ra) are optimized …
Published in Journal of Mechatronics and Automation · Vol. 5, Issue 3, 2018 · pp. 24–30 Read article
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Determination of the Mechanical Properties of Shape Memory Alloys
Abstract: Shape memory alloys are materials which can be deformed by cooling below a certain critical temperature and then regain their original shape after heating above this critical transition temperature.. Shape memory alloys (SMAs) are a class of functional materials that possess unique thermo mechanical properties, such as shape memory effect (SME), super elasticity (SE), damping, and good fatigue and corrosion resistance, which enable them to become ideal materials for applications …
Published in Journal of Mechatronics and Automation · Vol. 8, Issue 2, 2021 · pp. 1–9 Read article
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Optimization of Machining Process Parameters in Hard Turning of AISI D3 Tool Steel
Abstract: Machining operation is still irrefutably vital process in manufacturing, that involves complex relation of input parameters (like cutting speed, feed rate, depth of cut, nature of cooling, etc.) to output parameters (like surface finish, tool life, tool wear, machining time, machining cost, etc.). Numerous efforts were noticed in literature, to relate these parameters with each other so as to implement cost effective machining with least efforts. This paper presents one …
Published in Journal of Mechatronics and Automation · Vol. 4, Issue 1, 2017 · pp. 23–30 Read article
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Laser ablation to secure electronic fabrication
Abstract: This article is study of laser pulse treat of matter to produce nano-materials. Nano-particulated formation of semiconducting metalloids has showed optoelectronic sensibility to scheme eco-friendly production from Si and Ge. Of various techniques of nano-fabrication principles laser ablation has been as such production of stable, otherwise decisive scope has spelt to involve ligand as well. Liquid prohibitive laser ablation has scoped production of nano-in-meso-matter when bulk material has ablated underneath …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 9–15 Read article
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Oxidation Behaviour of Plasma Sprayed Carbon Nanotubes-Alumina Coated ASME-SA213-T291 Boiler Tube Steel
Abstract: In this research work, oxidation behaviour of Carbon Nanotubes reinforced Al2O3 coated ASME-SA213-T91 boiler tube steel specimens were investigated at 900°C temperature in air. The different CNTs-Alumina composite coatings were deposited using plasma spray technique and NiCr was used as bond coat before applying CNTs-Al2O3 coatings. The hot corrosion studies were conducted on all coated specimens in air at 900°C under cyclic conditions. The thermogravimetric technique was used to establish …
Published in Journal of Materials & Metallurgical Engineering · Vol. 7, Issue 3, 2017 · pp. 1–15 Read article
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An Overview of Welding of Aluminium Alloys through Pulse – Gas Metal Arc Welding Process
Abstract: Newer aviation and automobile designs intend at minimizing weight. Motivated by this requirement light metal industry is experiencing some stimulating developments. One of the mainly used light metals is aluminium. As aluminium is exploited as a substitute material, many challenges have been emerged in front of manufacturers. Some of them are development of new aluminium alloys, joining of diverse types of aluminium alloys and enhancement in weld quality of welds …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 1, 2018 · pp. 17–24 Read article
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Effect of Magnetic Field on Casting Parameters
Abstract: AbstractThe casting process is one of the oldest manufacturing methods involving squeezing / jolting the green sand used as moulding material, and further was developed with use of binders such as clay/organic resins. The constants search for newer moulding material lead to the magnetic mould involving steel shots and application of magnetic field. The preliminary trials on one of the process parameters i. e. Magnetic field was carried out and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 3, 2018 · pp. 30–35 Read article
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EFFECT OF Scandium and Zirconium ADDITIONS ON HARDNESS AND CORROSION RESISTANCE OF AA5083 Alloy
Abstract: This study investigates the hardness and corrosion resistance of modified AA5083. Stir casting with cold rolled condition was applied to prepare the four compositions, namely AA5083 alloy, modified AA5083 alloy with 0.2wt.%Sc-0.1wt.%Zr, modified AA5083 alloy with 0.4wt.%Sc-0.1wt.%Zr alloy, and modified AA5083 alloy with 0.6wt.%Sc-0.1wt.%Zr alloy. Alloying with Sc-Zr has a strong influence on the hardness of AA5083 alloy and corrosion resistance.
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 1, 2019 · pp. 1–8 Read article
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Effect of Pulse Current Micro Plasma Arc Welding Parameters on Pitting Corrosion Rate of AISI 316Ti Sheets in 3.5 N NaCl Medium
Abstract: Austenitic stainless steel sheets are used for fabrication of components, which require high temperature resistance and corrosion resistance such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industries. When they are exposed to seawater after welding they are subjected to corrosion as there are changes in properties of the base metal after welding. The corrosion rate depends on the chemical composition of the base metal and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 3, 2016 · pp. 12–24 Read article