Ramesh Raju

Using an unconventional method of machining, electric discharge machining is capable of processing extremely hard materials that are inaccessible to more traditional machining methods. Electric discharge machining is a metalworking technique that uses an electric erosion effect in conjunction with an electrosparking spark. A current discharge takes...

Complex structures can now be manufactured easily utilizing AM technologies to meet the pre-requisite objectives such as reduced part numbers, greater functionality, and lightweight, among others. Polymers, metals, and ceramics are the few materials that can be used in AM technology, but metallic materials (Magnesium and Aluminum) are attracting mo...

In this research paper the three-roll bending forming optimization for different sections of steel structure was studied. The three-roll forming method is suitable for forming a circular and curved type of work-piece. An analytical model and finite element model (FEM) using ANSYS are proposed for investigating the roll forming process for various s...

Inconel 718 is a nickel-based super alloy widely accepted in high-temperature applications owing to its high hot hardness. But the controlled machining of Inconel 718 super alloys is always a challenge at the micro-level with accuracy and precision. The powder mixed EDM is one of the best methods to machine Inconel 718 with high efficiency and prod...

This paper presents analysis and comparison into mechanical behaviour and microstructural attributes of postweld heat-treated AISI 1020 (0.21%-C) plates joined by the shielded metal arc welding (SMAW) process. The purpose of this work is to heat the welded samples uniformly so that a possible formation of austenite can be obtained, and hence, resid...

ECDM is important micro-machining technique to machine mostly non-conductive material like glasses, ceramics, composites, and alloys. The process has tremendous potential to replace earlier existing expensive processes. In this paper, an attempt has been made to machine important N-BK7 glass material with ECDM drilling process, to investigate the p...

This manuscript focuses on providing optimized transfer rate of heat produced in the fins that are provided on the cylinder head present on the compressor. In this paper three different cross sections are taken in to consideration, which are straight (rectangular), trapezoidal and parabolic cross section. The parabolic cross section stands to be th...

Superalloys are deemed as the most predominant material due to their exceptional mechanical characteristics such as better strength and corrosion resistance which are extensively adopted in various engineering applications like aircraft gas turbines. Nickel alloys are exhibiting better resistance to heat which makes the material to use in higher te...

Magnesium and Aluminum alloys continue to be important in the context of modern and lightweight technologies. With the advancement of additive manufacturing (AM), components can be produced directly in a net shape, widen up the usage of magnesium and aluminum alloys as well as holding new ideas for the application of unique physical structures made...

Additive manufacturing gives possibilities to fabricate complex parts up to its near final net shape through layer-by-layer deposition on top. The process involves proper understanding of the underpinning physics involved in the selection of processing parameters as well as materials used. It elucidates the implementation of artificial intelligence...

Ti6Al4V is a Hard-to-Shear material in the Automobile, Aerospace, Marine, and Biomedical implant industries. The difficulties in the shearing arise from metallurgical phase alterations under insufficient lubrication and cooling during Ti6Al4V machining. This article wisely investigated 3D finish milling using different Computer-Aided Machining (CAM...

Bio-mimicking is the process of mimicking the various patterns, models, and systems of nature to take inspiration and solve human problems. The fractal-like patterns are seen in the leaves, tree branches, veins and arteries of the human body, etc. Imitation of these structures is a complex process. This can be achieved using lifting plate Hele-Shaw...

The pull-in voltage of an electrostatically actuated cantilever-based series type MEMS switch suitable as a switching device in several applications can be lowered by reducing its cantilever beam stiffness constant (k). However, it is a challenging task to lower the pull-in voltage without adversely affecting its mechanical performance parameters l...

IN738 alloy used extensively in turbine applications. This study work looks into the hot air jet erosive analysis on the IN-738. Various parameters were used to examine the erosion mechanistics on IN738. The erosive analysis were made using SEM images. At 45°, the principal erosion mechanisms of IN738 were lip formation and grooving. At a 90° impac...

This paper focuses on providing economical methods for manufacturing of aluminum die casting inserts, for various optimized solutions developed the constraint of the existing manufacturing setup is also considered. The techniques are implemented on a die casting inserts of Honda Activa-Mission Case component which are made from hot die steel. The p...

Nickel-based superalloys are commonly used in the manufacturing industry due to their inherent properties and superior performance over titanium-based materials. Among these is Monel 400. This copper-based nickel alloy has exceptional corrosion resistance and mechanical properties. Monel 400 is mainly used in various industrial sectors such as chem...

Programs for 5 axis machining is not complex task but also tedious to understand and implement for new CNC programmers. Hence for making the concept of 5-axis easy for understanding at zero damage of the machine tool it is necessary for developing virtual platform which will give real time feel of the actual CNC machine. The concept of 5 axis simul...

Laser Beam Welding (LBW) is one of the sophisticated welding processes that find applications in multiple technical disciplines such as vehicle manufacturing, aviation, and electronics industries. For establishing sound weld joints, it is vital to improve artificial intelligence tools effectively and affordably. In this current inquiry, a hybrid op...

Additive manufacturing (AM) is the method for fabricating the components effectively. The components fabricated by AM process has wider applications in various domains. Fusion deposition modeling is one of the AM methodology that has been used for fabricating the components. Biodegradability of PLA makes the material as best alternate for plastics...

IN718 is a nickel-based superalloy that is frequently utilised in turbine applications. Investigation of Erosion Mechanism on IN-718 Superalloy under water jet Conditions are discussed in this research paper. Erosion mechanistic studies on IN718 was investigated with different impact angle and impact velocity. SEM micrographs were used to character...

In the past two years, the pandemic situation has affected the aviation industry drastically. This situation starts to change, gradually, which is about to highly increase the international air travel around the world. Commercial air transport emission contributes a significant amount to global warming. Hence, in this research, to reduce the fuel c...

Wire Electrical Discharge Machining (WEDM) is one of the innovative approaches for removal of material from the work piece that is the variant of Electrical Discharge Machining method. This method is prominently engaged for machining harder materials with intricate shapes. Titanium alloys are categorized as lightweight material, which is used in va...

Additive manufacturing is considered as one of the emerging technologies in the field of manufacturing technology since the 1980s. The scope and application of such additive manufacturing are getting widen since the concept of building-up parts can overcome all types of geometrical complexity in the manufacturing of structural components. The appli...

3D printing is growing as one of the most important advanced technologies and it has highly integrated with today’s manufacturing field. The polymer materials are finding versatile applications with respect to recent trends. Fabrication of such polymer materials with advanced manufacturing technology emphasis their usage in the structural applicati...

Titanium alloys are lightweight materials for transportation industry and are additionally arising as a possible material for temporary biomedical inserts. Among them Grade 9 is a wrought Ti alloy with good corrosion resistance and thermal strength. The applications of Grade 9 include aircraft, tennis racquets, golf club shafts, skiing plates, and...

The Precipitation Hardened 17–4 PH Stainless Steel (PHSS) offers an amalgamation of higher strength and hardness, better resistance for corrosion, excellent transverse mechanical behaviour, and is broadly adopted in various engineering applications such as making of aerospace components, chemical industries, and general metalworking industries. Pre...

Wire Electrical Discharge Machining (WEDM) is a variation of the electrical discharge machining procedure that is one of the creative approaches for removing material from the work piece. This technique is commonly used to machine tougher materials with complex forms. Titanium alloys are a type of lightweight material that is employed in a wide ran...

Magnesium alloys are one of the lightweight materials with exceptional mechanical characteristics that possess high strength to weight ratio and it is primarily used for various engineering applications. Due the better resistance to corrosion, these materials are primary choice for aerospace applications such as fuselages. However, the conventional...

Titanium alloys are lightweight materials used in the transportation industry, and they are also being considered as a potential material for biomedical implants. Grade 5 is a wrought titanium alloy with excellent corrosion resistance and thermal strength. Aircraft, tennis racquets, golf club shafts, skiing plates, and bicycles are all examples of...

Titanium alloy is one of the predominant materials that are progressively used in the aerospace components, marine parts, and automotive applications. Making of components by titanium and its alloys is still confrontation. Conventional methods of machining are restricted in use due to more tool wear and slower machining. Non-traditional methods of...

Wire electrical discharge machining (WEDM) is one among the contemporary method of material removal process which is established from the perception of spark erosion machining. Non-traditional method of material removal processes has been evolved to overcome some difficulties in making of intricate shapes in any electrically conductive work materia...

Incoloy 800HT is one of the hard-to-machine materials and extensively employed in high-temperature applications. It possess better strength and lower thermal diffusion that results in poor machinability by conventional machining methods. To overcome such kind of demerits, unconventional methods of material removal process have been evolved and assu...

AA 6061 is an aluminium alloy having good mechanical possessions such as high strength and ductility plus fatigue. Owing to its specific properties, AA 6061 is widely used in fabricating aerospace components such as aircraft fittings, shafts, gears and defence products. Moreover, its outstanding corrosion resistance property suits it as a significa...

This book comprises selected peer-reviewed proceedings of the International Conference on Advances in Industrial Automation and Smart Manufacturing (ICAIASM) 2019. The contents focus on innovative manufacturing processes, standards and technologies used to implement Industry 4.0, and industrial IoT based environment for smart manufacturing. The boo...

Response of an engineering material to applied stress is normally evaluated by stress analysis to assess the zone of strength and weakness. Such an analysis will illustrate the possibility of crack-free machining. Grooving of ceramics with diamond indenter is associated with upsetting of the material drawn to the tool wedge and relaxation of the ma...

The layer-by-layer addition of material technology is termed as additive or constructive manufacturing. It has gained a significant importance in latest era of manufacturing due to its simplicity. In this process, the procedure starts with generation of CAD model and ends with printing of CAD data in a 3D printer. As parts of complex and intricate...

Apart from green manufacturing perspective, laser material processing is known for higher productivity, non-contact processing, elimination of finishing process, adaptability to automation, minimum HAZ, etc.Majority of laser material processing involves absorption of large number of photons involving in surface modification by increasing the te...

Inconel 718 one of the Superalloy which is a high performance material that possess special features such as better mechanical properties, creep strength, oxidation and corrosion resistance and thermal resistance and considered as a difficult to machine material because of its poor machinability by traditional machining methods due to its low therm...

In this report carbon nano-particles composites with polylactic acid polymer material were fabricated which finds interesting applications in various industrial devices. 3D fused deposition technique has been used for the preparation of polylactic acid (PLA)/ carbon nanocomposite coupons. The analysis of hardness and impact testing proved that the...

Nickel based superalloy is a high performance alloy that has distinct features such as improved mechanical properties, creep strength, oxidation and corrosion resistance and thermal resistance. Inconel 625 belongs to the family of super alloys and mostly preferred in case of high temperature applications. Inconel 625 is particularly suited for indu...

Hastealloy C276 is hard to machine superalloy and extensively used in various engineering applications. It possess good strength and lower thermal conductivity which results in decreased tool life and poor machinability by conventional machining. Advanced machining processes have developed to overcome these difficulties and claimed as an alternativ...

Thin sections of Inconel 718 sample was treated with laser-based metal deposition using a CW CO2 laser. The Taguchi-based grey relational approach was incorporated for determining the optimized process characteristics of the laser treatment. Laser scan speed was varied at a constant laser power in order to analyze the effect of cooling rate and the...

Importance of this present investigation is to identify the influence of modified tool (tool with texturing) on the process of orthogonal turning of Ti–6Al–4V work material. To achieve the enhanced turning conditions, four different types of textures (plain conventional, cross, perpendicularly textured and parallel textured tool to the chip flow di...

Wire EDM is an advanced approach of machining which is developed from the concept of electrical discharge machining and primarily employed to remove material from difficult to machine materials. Also, this advanced machining process has been exclusively employed to produce intricate shapes on the electrically conductive work materials. Composite ma...

Hastealloy C276 is hard to machine superalloy and extensively used in various engineering applications. It possess good strength and lower thermal conductivity which results in decreased tool life and poor machinability by conventional machining. Advanced machining processes have developed to overcome these difficulties and claimed as an alternativ...

The wear behaviour of Cr 3 C 2-25% NiCr laser alloyed nodular cast iron sample were analyzed using a pin-on-disc tribometer. The influence of sliding velocity, temperature and load on laser alloyed sample was focused and the microscopic images were used for metallurgical examination of the worn-out sites. Box-Behnken method was utilised to generate...

This technical paper deals with high-temperature dry sliding wear behavior and its mechanism of Al2O3–50TiO2 (A50T) coating on Inconel 718 alloy. The sliding wear behavior of the A50T coating on Inconel 718 alloy was investigated using a pin on disc equipment at 500°C with varying parameters like normal load and sliding velocity. Scanning Electron...

Nickel based superalloys are most commonly used materialin various engineering applications such as gas turbines, nuclear reactors and aerospace industries. The nickel based superalloys are very hard to machine materials with the use of conventional machining methods. Electrical Discharge Machining (EDM) is an appropriate unconventional material re...

In this work, an attempt is made to reduce the detrimental effects that occurred during machining of Ti-6Al-4V by employing the textures on the rake faces of the cutting tools. Turning experiments on the Ti–6Al–4V alloy were carried out using textured tungsten carbide tools with micro-scaled grooves in preferred orientation such as, parallel, perpe...

An optimization of laser metal deposition process considering tensile strength, clad hardness, clad grain size and clad porosity as performance characteristics were investigated. The influence of laser power and laser scan speed on the thermal gradient and cooling rate with regard Ti6Al4V powder coating on Ti6Al4V substrate was focused. Taguchi’s e...

Nickel based superalloys are commonly employed in numerous engineering applications such as gas turbine, nuclear reactor and aerospace industries. The nickel based superalloys are very difficult to machine with the aid of traditional machining methods. Electrical Discharge Machining (EDM) is an appropriate unconventional method used for machining s...

An optimization of laser metal deposition process considering tensile strength, clad hardness, clad grain size and clad porosity as performance characteristics was investigated. The influence of laser power (1500W and 1750W) and laser scan speed (500 mm/min and 600 mm/min) on the thermal gradient and cooling rate with regard Ti6Al4V powder coating...