10 publications
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Review on Challenges in Drilling Non-metalsBy Dr. Kondapalli Siva Prasad
Abstract: Drilling is widely used in manufacturing industry and can be easily performed on all materials. It is well known that drilling produces under size of the hole and we need to carry out further operations like boring to get the exact dimensions. When coming to nonmetals like composites maintaining the dimenions in drilling operations is a critical task, as they are laminated with different materials and chances of defects present …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 2, 2023 · pp. 15–21 Read article →
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Experimental Investigation on 4-Stroke Diesel Engine Using Waste Cooking Oil Biodiesel FuelBy Dr. Kondapalli Siva Prasad
Abstract: Due to using of fossil fuels, the world today is faced with serious environmental pollution. However, these fuels are limited and depleting day by day as the consumption is increasing very rapidly. Hence, it is necessary to find out a clean alternative fuel produced from renewable sources. Biodiesel production and applications are gaining popularity in recent times due to diminishing petroleum reserves and detrimental environmental impacts. Edible and non-edible oils …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 19–28 Read article →
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Establishing Empirical Relationships to Predict Grain Size and Hardness of Pulsed Current Microplasma Arc Welded Inconel 625 SheetsBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: Nickel alloys have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current microplasma arc welding was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on developing mathematical models …
Published in Journal of Materials & Metallurgical Engineering · Vol. 1, Issue 1-3, 2011 · pp. 37–47 Read article →
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Optimizating Pitting Corrosion in 3.5 N NaCl Medium of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Using Genetic AlgorithmBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current micro plasma arc welding (PCMPAW) was found beneficial due to its advantages over the conventional continuous current process. This paper highlights …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 132–142 Read article →
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Effect of Process Parameters of Pulsed Current Micro Plasma Arc Welding on Weld Pool Geometry of AISI 304L Stainless Steel SheetsBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: AISI 304L stainless steel is an austenitic Chromium-Nickel stainless steel offering an optimum combination of corrosion resistance, strength, and ductility. These attributes make it a favorite for many mechanical components. The low carbon content reduces susceptibility to carbide precipitation during welding. The effects of pulsing current parameters on weld pool geometry namely front width, back width, front height, and back height of pulsed current micro plasma arc-welded AISI 304L stainless …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 105–116 Read article →
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Multi Objective Optimization of Weld Bead Geometry Parameters of Pulsed Current Micro Plasma Arc Welded Inconel 625 Using Enhanced Non-dominated Sorting Genetic AlgorithmBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: Pulsed Current Plasma Arc Welding (PCPAW) is one of the most widely used welding processes in sheet metal manufacturing industry. In any fusion arc welding process, the weld bead geometry plays an important role in determining the mechanical properties of the weld and hence, quality of the weld. Moreover, the geometry of weld bead involves several simultaneously multiple quality characteristics such as front width, back width, front height and back …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 1, 2013 · pp. 17–24 Read article →
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An Investigation on Effect of Welding Current Mode on Weld Quality Characteristics of Microplasma Arc Welding of Inconel 625 SheetsBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: Nickel alloys have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single-pass welding of thinner sections of this alloy, pulsed current microplasma arc welding was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on studying the effect of …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 2, 2013 · pp. 8–13 Read article →
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Critical Review of Fatigue Properties of Friction Stir Welds of Aluminum AlloysBy Dr. Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao
Abstract: Friction Stir Welding (FSW) is a solid state welding technique being developed for various metals and alloys. It allows joining of high strength aluminum alloys which is generally difficult to weld with conventional welding techniques. This joining technique is energy efficient, environment friendly, and versatile. FSW is considered to be the most significant development in metal joining in a decade. It is expected to have various weld properties to meet …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 1, 2014 · pp. 1–6 Read article →
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Review on Corrosion of Welded JointsBy Dr. Kondapalli Siva Prasad
Abstract: Corrosion is one of the major problems generally faced by welded joints made from various welding processes. Welding resistance of welded joints can be improved with addition of anticorrosive elements in the base metal. However certain other factors like fabrication technique, welding practice, welding sequence, moisture contamination, organic or inorganic chemical species oxide film and scale, weld slag and spatter, incomplete weld penetration or fusion also contribute for corrosion of …
Published in Journal of Materials & Metallurgical Engineering · Vol. 5, Issue 3, 2015 · pp. 23–30 Read article →
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A REVIEW ON RECENT TRENDS AND CHALLENGES IN MICROMACHINING AND MACHINABILITY OF Ti-6Al-4VBy Dr. Kondapalli Siva Prasad
Abstract: Based on several literature examinations from past decades, it is clearly observed that limited research has been done till date concerning to micromachining and had a partial understanding of it with focus on miniaturized parts. This review article presents a complete comprehensive on machining process at micro level with attention in drilling for work horse of titanium alloys. The Ti and its alloys are the most attractive materials due to …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 3, 2018 Read article →