J. Edwin Raja Dhas

• Ph.D
• Head of Department at Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari DT, INDIA

Surface of a machined component is a significant factor in evaluating the quality. Quality of machined surface plays an important role in predicting the fatigue strength, corrosion resistance and creep life. It is tedious to realize the process parameters behind the surface roughness formation mechanism. Hence development of models, which can predi...

Producing low-cost, high-quality products are the primary aim of machining. To accomplish this appropriate choice of machining parameters is a challenging issue. This paper compares three feature learning techniques to investigate their performances for predicting manufacturing quality using regression model development for predicting machining par...

The main objectives of the proposed work are to make sound welded joints, optimize the parameters involved in welding, perform the metallurgical characterization of various weld zones, and discover the new option of producing sound welded joints among the ZE42 and the different alloys of magnesium. As two dissimilar materials are needed to be joine...

INTRODUCTION: Effective (JSS) was required in the manufacturing industry to satisfy demand productivity, reduce production costs, and increase competitiveness in a market that was becoming more active and demanding of a variety of goods.OBJECTIVES: The (JSSP) has gained importance in recent years as a result of rising customer demand across a varie...

The present work is the novel examination of influence of welding process parameters and material flow on the mechanical and microstructural characteristics during the FSSW of dissimilar AA2024/AA7075 joint were evaluated and compared with similar AA2024/AA2024 and similar AA7075/AA7075 FSSW joints. The microstructural and physical properties of tw...

The present work is the investigating the parametric optimization of FSW parameters for joining ZE42 magnesium alloys by multi-objective grasshopper modelling technique (MOGOA) and non-dominated sorted genetic algorithm-II (NSGA-II). Regression equations were used to predict the optimal tensile strength and hardness of the FSW joints, while tensile...

The most important advancement in metal joining during the last few decades is the Friction Stir Welding (FSW) process. When welding magnesium or light weight alloys, FSW offers several benefits. Due to its advantages in lightweight construction, friction stir welding of magnesium alloys are widely used in the aerospace, marine, transport sector, p...

Composite materials based on renewable and biodegradable natural fibres derived from agricultural waste and wood industry residues are being used in an increasing number of applications. These products are an environmentally friendly and cost-effective alternative to traditional petroleum-based materials, as they significantly reduce the use of fos...

The FSSWed joining process is preferred as alternative for conventional joining process in automobile, aerospace, and mechanical sectors. However, dissimilar metal joints have serious drawbacks, prone to corrosion in saline water environments. Hence, corrosion characteristics of various metal joints are being explored. This chapter presents the cor...

Biofibers and Agro-waste in polymer matrix materials are attracting augmented deliberation because of ecological concerns and the acknowledgment that worldwide oil assets are limited. Natural fiber-based hybrid composites were the best choice for automobile industry for interior and exterior parts, bearings, door linings, etc., since they were sear...

Lightweight materials are being employed in aeronautical and automobile industries for high strength, lower weight, and energy consumption. Attention is needed to control pollution through the usage of harmful synthetic composites globally. In this work, coconut shell nanofillers are reinforced in the development of various palm fiber (leaf stalk,...

won or lost in milliseconds. They are the first to bring new technology to the test, and technological advancements on the racetrack frequently find their way into series production engines. To solve the current challenges of cutting CO2 emissions and fuel consumption, automakers have often adapted successful innovations on the track without sacrif...

More than 70% of the plastic wastes come out the packing materials. This causes heart problems and cancer too in the later stages. The plastics started to blend in drinking water in a major percentage. Recycling of the existing waste plastic is the only major way so that we can reduce this harmfulness to the globe. Here we have made use of polythen...

The present novel work is the investigation of dissimilar AA2024/AA7075 aluminium alloy friction stir spot welded joint. The input welding process parameters were analysed to determine the most influencing process parameter on mechanical and morphological properties of the weld. The welding process and input parameters were optimised by Box–Behnken...

Residual stresses in a component or structure are stresses caused by incompatible internal permanent strains that develop or vary during the component's lifetime, from raw material manufacturing to final disposal. Residual strains may be detected in the solidified weld metal and the heat-affected zone of a welded connection. Researchers have establ...

Models are required by automation systems in order to forecast the influence of different industrial process factors in real time. Welding is a metal joining procedure that is utilised extensively in the fabrication industry. Welding speed, welding current, Arc voltage and Electrode stick out were taken as an input parameters and the weld quality w...

Natural fibers are the replacement for the readymade fiber to fiber-strengthened mixtures have improved and unlocked extra business opportunities and potentials. Conventional fiber offers both savings in the cost and decrease in compactness when likened to the cut-glass fibers. This review article highlights some of the important breakthroughs asso...

Every industry, particularly the automotive and aerospace industries, has a constant need for exceptional materials. Aluminium is the most often utilized material in these sectors. Despite the fact the it contains all of the features to some level, there is a continuing desire for alternative materials. In the automotive industry, friction stir wel...

Composite materials play a vital role in today's manufacturing world due to their light weight and reasonable strength. The selection of materials for composite manufacturing is a challenging issue. In order to overcome the weaknesses of particular characteristics of a fiber several fibers are hybridised and composites are manufactured. This paper...

The present study was the result of an investigation of friction stir spot (FSS)-welded similar aluminum alloys 2024-T3 joint and 7075-T6 joint and dissimilar aluminum alloy 2024-T3-7075-T6 joint. The mechanical , microstructural, and tribological behavior of the different FSS-welded specimens were characterized for effects of influence of the inpu...

Green Hybrid Composite Materials are an increasing trend for future uses, mostly in the automotive and aviation industries, therefore several studies are underway, focusing on Natural Hybrid Composites. This review journal focuses on green hybrid composites for use in the aviation industry, as these hybrid composites have a higher probability of be...

Aluminium hybrid composites were created using a modified stir casting process in this study. The casting yielded plates with dimensions of 100 mm, 50 mm, and 6 mm which were successfully butt connected using Friction Stir Welding (FSW). Four parameters were used to perform FSW; axial load, spindle speed, tool pin profile and aluminium material. Th...

In this paper, the Taguchi method and grey relational analysis have been used to evaluate the weldability of AZ91B Magnesium alloy by friction stir welding process. Experiments were conducted using the L9 Taguchi design considering an orthogonal array consist of 3 factors and 3 levels. The rotational speed, transverse speed and angle of tilt of the...

The requirement for structural materials with demanding properties is always a major concern among automotive researchers. Magnesium alloys possess the required properties. In this work magnesium alloys, AZ31B and AZ91B were joined by friction stir welding. The influence of process parameters on the weld properties has been studied. The process par...

In this modern world the requirement of metal matrix composites is high, because of its thermal and wears resistance properties and high strength to weight ratio. Production of a composite material economically and efficiently is highly challenging. Titanium carbide is one of the hardest and wear-resistant metals which can be used as a reinforcemen...

The present work investigates the corrosion behavior of friction stir spot welded similar/dissimilar aluminum alloys (AA2024 and AA7075)

The novelty of the present work is the investigation of friction stir spot welding between AA2024 and AA7075 aluminum plates performed by Box-Behnken technique of response surface methodology. The chemical composition of the aluminum alloys is confirmed using XRD analysis. The process parameters of the FSSW process are analyzed to find the signific...

At present, our world is shifting towards a green era of eco-friendly material for product development. So today’s attention of our research community is finding an eco-friendly material which gives high strength at affordable cost. The emerging "green" economy is based on energy efficiency, renewable food stocks in polymeric products, industrial p...

The designing and modeling of delta wing is one of the interesting topics. A number of researchers has contributed different works on modeling the same. This paper comes out with a new delta wing modeling with the inclusion of optimization concept. The obtained data from the investigation is integrated and given as the input to the classifier for p...

In this paper, grey relational analysis combined with Taguchi method have been used to evaluate the weld ability of AZ31B magnesium alloy by FSW process. The L9 Taguchi design considering an orthogonal array consists of 3 factors and 3 levels was used for experimentation. The rotational speed of tool, transverse speed and angle of tilt of the tool...

The emerging “green” economy is based on energy efficiency, renewable food stocks in polymeric products, industrial processes that reduce carbon emissions, and recyclable materials. Natural fiber is a type of renewable source and a new generation of reinforcements and integrators for polymer-based materials. Because of its advantages over synthetic...

Light materials having high strength-to-weight ratio plays a vital role in material science especially in the field of aerospace, marine transportation, military and structural applications. Composite serves the same. Aluminium matrix composite (AMC) is the aluminium matrix which has high strength-to-weight ratio. The purpose of the work is to inve...

The continuous advancement of lightweight resources for the application in the automotive industry is due to the lower absolute strength of aluminum alloys. From these alloys, several components are produced by casting, stamping, forging and extrusion manufacturing processes. General technique for joining the steel sheets is Resistance spot welding...

AA 5052 H32 aluminum alloy is one of the most commonly used materials in the marine environment due to its good formability, good weldability, and better corrosion resistance. Assessment of resistance of welds of the alloy against corrosion is necessary for reliable design. In the present study, pitting and intergranular corrosion behavior of tungs...

In this paper Al7075-TiC-MoS 2 hybrid composites were prepared through stir-casting process and their microstructure, mechanical and tribological properties are analyzed. Aluminium 7075 was selected as matrix and reinforced with harder TiC to improve the mechanical strength and softer MoS 2 to enhance the resistance to wear. The prepared samples we...

The structural material identified for this work is 15CDV6 steel belongs to the category of High strength low alloy (HSLA) family. This research is conducted in the area of Powdered flux TIG (PFTIG) and Flux bounded TIG (FBTIG) welding with the assistance of optimum process parameters procured from Grey wolf optimization tool generated in MATLAB so...

Manufacturing and maintaining different aircraft fleet leads to various purposes, which consumes more money as well as man power. Solution to this, nations that are leading in the field of aeronautics are performing much research and development works on new aircraft designs that could do the operations those were done by varied aircrafts. The fore...

The most popular steel grade material highly used in the fabrication of industrial pressure vessels and boilers is SA516 grade 70. Submerged Arc Welding is a metal joining technique widely used in heavy fabrication industries for its high quality, reliability, attaining deeper penetration and a smooth appearance of weld bead. In this paper, Taguchi...

In the present work, multi-objective optimization of the input welding parameters influencing the quality of weld joint of AA 5052 H32 aluminium alloy by FSW process is investigated using response surface methodology and grey relational analysis. The quality of the welded joint is measured based on the higher value of tensile strength and hardness...

Welding is a fabrication process that joins materials by causing fusion. Even though there available various welding types like MIG/MAG and MMA welding, they need additional electrodes while doing welding process. Aspiration of this paper is to introduce Tungsten Inert Gas (TIG) welding via an optimization approach namely Grey Wolf Optimization (GW...

This study investigates the effect of various nanopowders on PFTIG (Powdered flux Tungsten inert gas) welding of HSLA steel. The High strength low alloy (HSLA) steel identified for this work is 15CDV6 steel. Three different nano-oxide powders such as Cr203ZnO, and NiO were used in this research. The bead geometry analyzed by using various nanopowde...

Fluid-structure interaction (FSI) is the commerce between a flexible structure and the surrounding fluid gives a variety of phenomenon. Application of this phenomenon in many areas like vibrational analysis of aircraft wings, machinery, bridges, etc. This computational analysis leads to many aerodynamic and structural dynamic problems. In the prese...

PFTIG welding process is mainly used to provide a quality welding. This method provides the best quality of manufacture. TIG is the most commonly used method for joining two similar or dissimilar metals, but their quality will be less. So, to improve the quality, PFTIG method is used. Here, the reference of sixty papers is considered, and their out...

This research work attempted a study regarding the effect of different nanoparticles on PFTIG (Powdered flux Tungsten inert gas) welding of 15CDV6 steel. The Nanopowders used for this work are TiO2, SiO2, Cr203, ZnO, and NiO. The analysis of bead morphology is conducted by using these nanoparticles and observed that all Nanopowders provide a better...

Friction stir welding (FSW) is a solid-state joining process producing high-quality welds with lower residual stresses and improved mechanical properties. Underwater FSW is a variant of FSW process which controls heat conduction and dissipation along the weld line improving the joint properties. The feasibility of underwater friction stir welding o...

Wire cut discharge Machining is an advanced machining method controlled by a variety of interrelated complex parameters like discharge current, pulse on time, pulse off time and servo speed rate. Any slight variations in one will have an effect on the machining quality measures like surface roughness and material removal rate. In the present work A...

In automobile industries, usage of unconventional machining is increased due to their precision and accuracy. This research work is planned to upgrade the Wire Electric Discharge Machining (WEDM) process parameters by considering the impact of discharge current, pulse on time, pulse off time and servo speed rate. Tests have been led with these para...

Friction stir welding between AA5052-H32 aluminium plates is performed by central composite design technique of response surface methodology. It is found that the welding parameters such as tool pin profile, tool rotational speed, welding speed, and tool tilt angle play a major role in deciding the joint characteristics. The joints fabricated using...

This paper focus on impact of tool pin in friction stir welding on activated carbon reinforced aluminium metal matrix composite. For fabrication of metal matrix composite AA6061 is used as matrix and activated carbon is used as reinforcement and it is casted using modified stir casting technique. After casting metal matrix composite has undergone v...

Aluminium 5xxx series alloys are the strongest non-heat treatable aluminium alloy. Its application found in automotive components and body structures due to its good formability, good strength, high corrosion resistance, and weight savings. In the present work, the influence of Tungsten Inert Gas (TIG) welding parameters on the quality of weld on A...

Natural fibers available plenty can be used as reinforcements in development of eco friendly polymer composites. The less utilized palm leaf stalk fibers sandwiched with artificial glass fibers was researched in this work to have a better reinforcement in preparing a green composite. The commercially available polyester resin blend with coconut she...

Industrial automation is the need of the hour. Success and failure of automation depends on the selection and efficient utilization of soft computing tools such as artificial neural network, expert systems, and fuzzy logic. This article explores the idea of constructing a fuzzy logic model to predict wear rate of fabricated composites under predete...

There is a consistent demand for superior materials in every industry. The areas on demand are automobile and aerospace sectors in major.. The most commonly used material in these fields is Aluminium.Though it possess all the properties up to some extent constant demand is pushing for alternate materials. Dissimilar alloys have been a relatively ne...

The comprehensive body of knowledge that has built up with respect to the friction stir welding (FSW) of aluminium alloys since the technique was invented in 1990's, enables us to weld aluminum alloys and titanium alloys etc. The processing of FSW, the microstructure in FSW alloys and the factors influencing weld quality are introduced. Aluminium A...

Composite materials are playing effective role in the development of automotives and aeronautical structural parts. Due to its flexibility and damping qualities and its easy approach of study and development, number of investigation and researches nowadays increases a lot. In this study, basics about Metal matrix composites with aluminium base are...

The purpose of this work is to produce an aluminum metal matrix composite with high strength, low weight with good thermal resistance. For preparing metal matrix composite AA6061 is used as matrix and activated carbon is used as reinforcement and it is cast using modified stir casting technique. The reinforcement activated carbon is added in variou...

The welding of aluminium and its alloys was a great challenge for researchers and technologists till 1991. Friction stir welding (FSW), a relatively new solid state joining process was first patented in 1991 by Thomas et. al. from ‘The welding Institute (TWI), England. Later its application found in various industries like aerospace, marine, automo...

Connecting Rods are practically generally used in all varieties of automobile engines. Acting as an intermediate link between the piston and the crankshaft of an engine. It is responsible for transmission of the up and down motion of the piston to the crankshaft of the engine, by converting the reciprocating motion of the piston to the rotary motio...

Wire cut discharge Machining is an advanced machining method controlled by a variety of interrelated complex parameters like discharge current, pulse on time, pulse off time and servo speed rate. Any slight variations in one will have an effect on the machining quality measures like surface roughness and material removal rate. In the present work A...

The present work represents the AA7075 and Powdered Activated Carbon (PAC) metal matrix composite was processed by down pouring stir casting technique. Invented metal matrix composites were subjected to hardness, tensile test, microstructure analysis, X-ray diffraction, energy dispersive spectrum, FT-IR analysis and thermal analysis. AA7075 metal m...

This article focus on optimizing the friction stir welding process parameters for hybrid non ferrous composites. The hybrid composites were butt joined by varying four welding parameters such as spindle speed, axial load, tool pin profile and material. Experimentation was carried out by adapting response surface method (RSM) with central composite...

Wire cut discharge machining is a progressed machining strategy controlled by an outsized scope of assortment of interrelated complex inputs are discharge current, pulse on time, pulse off time and servo speed rate. Any slight variations in one will have an exertion on the machining execution responses like surface roughness and material removal ra...

The aim of this work is to produce an aluminium metal matrix composite with high strength, low weight and good weldability.For preparing metal matrix composite AA6061 is used as matrix and activated carbon is used as reinforcement and it is casted using modifi ed stir casting technique. The reinforcement activated carbon is added in various ratio 2...

The quality of machining of AA7075-PAC metal matrix composites by WEDM is investigated using response surface methodology and grey relative analysis. Method: Experimentation is designed and performed using Response surface methodology with 27 trials discharge current, pulse on time, pulse off time and servo speed rate as input variables. Material r...

This paper focuses a proper approach to optimizing friction stir welding process parameters for the aluminium hybrid composites. Friction stir welding process is a solid-state welding process that creates high-quality, high-strength joints with minimum distortion and is capable of fabricating either butt or lap joints, with a wide range of material...

This article illustrates the response surface methodology and artificial neural network primarily based mathematical modelling for average machining parameters of powdered activated carbon and 7075 Al metal matrix composite throughout wire spark machining. Four WEDM parameters particularly Discharge current, pulse-on time, pulse-off time and servo...

This paper focus on optimization of Friction Stir Welding (FSW) process parameters for joining of disparate aluminium composites using hybrid approach. The FSW process parameters considered are tool rotational speed, tool profile, axial force and aluminium material. Response Surface Method (RSM) of central composite design is used for determining t...

In the prevailing work Aluminium alloy AA7075 become bolstered with numerous percentages of TiC particles via the usage of high energy stir casting method additionally added with MoS2 as hybrid composite material. The characterization became achieved through Tensile, EDS, SEM, XRD, and TGA. The mechanical behaviors like hardness, tensile and therma...

Due to increasing environmental concerns and non-renewable resources dwindling at a higher rate, the researchers are working on replacement of traditional non-renewable materials with sustainable eco-friendly materials that can be recycled or biodegradable. Among the polymer composites reinforced with natural fibre, bamboo fibre is a strong contend...

The motivation behind this work is intended to the experiment of ideal machining settings to get most minimal surface roughness in whirling of AA7075-TiC composite by response surface method. Investigation was planned utilizing response surface design and 17 analyses were outlined by this procedure and tests directed. The outcomes are examined util...

The selection of reverse logistics service provider (RLSP) can bring economic benefits. Considering the current development of reverse logistics in manufacturing, process and domestic appliances industries, this paper proposes a set of factors influencing selection of service provider and uses a DEMATEL method to establish relation matrixes reflect...