G. Yuvaraj ¹, B. Vijaya Ramnath ², A. Abinash ², B. Srivasan ², R. Vikas Nair ²

Affiliations
1 KPR Institute of Engineering and Technology, Coimbatore, IN
2 Sri Sairam Engineering College, Chennai, IN

Abstract

Objectives: The recent development in materials replaces automotive and aerospace components with composites. Among composites, natural fiber composites play a vital role due to their properties like bio-degradability, low strength to weight ratio and ease of manufacturing. Method: In this work, sisal epoxy hybrid composite was fabricated by hand layout process. Initially, releasing agent is applied on the top surface of the mould over which Glass Fiber Reinforced Plastic (GFRP) is placed. On GFRP, apply resin hardener mixer over which sisal is placed. Again GFRP layer is kept on sisal. Findings: The result shows that, breaking load of double shear test is increased from 1.02 to 1.43 kN. Hardness value increased from 76.2 to 88.2. The results of inter de lamination test also increased from s 7.96 to 8.52 kN. Above results proved that composite with equal fibre ratio of glass and sisal (50:50) has improved the mechanical properties than composite with minimum percentage of sisal fiber. Applications: The material developed is suitable for automotive bumper application. Also, it may be used as partition and load carrying medium in railway and marine application.

Keywords

Glass Fibre, Hybrid Composites, Mechanical Properties, Sisal Fibre.

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J. Jeykrishnan ¹, B. Vijaya Ramnath ¹, A. Jude Felix ², C. Rupan Pernesh ¹, S. Kalaiyarasan ¹

Affiliations
1 Department of Mechanical Engineering, Sri Sairam Engineering College, Chennai - 600044, Tamil Nadu, IN
2 Department of Mechanical Engineering, Mar Ephraem College of Engg & Tech, Marthandam – 629171, Tamil Nadu, IN

Abstract

Objectives: To find the important parameters that affects the performance output (i.e.) to boost the Material Removal Rate (MRR) of the workpiece. Methods: Electro–Discharge Machining (EDM) is a thermal based machining process which is used to remove ‘hard to cut materials’ with complex shapes. The principle with the EDM or spark eroding machining is that the unwanted materials are removed with the repeated current discharges between cathode and the anode, separated by a dielectric fluid and is subjected to an electric voltage. Findings: This paper investigates in optimizing the process variables of EDM by employing a traditional technique. The parameters chosen for optimization are pulse on time, pulse off time followed by the current and L9 Orthogonal Array (OA) has been selected to examine the impact of the process variables on the performance i.e. on the material removal rate. The experimental trials have been done on AISI D2 die steel with positive polarity and brass has been chosen as an electrode material. Applications: Mainly, the EDM are employed to machine difficult to cut materials like nickel base super alloys, titanium etc.

Keywords

AISI D2 Die Steel, Design of Experiments (DOE), Electro-Discharge Machining, Material Removal Rate.

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J. Jeykrishnan ¹, B. Vijaya Ramnath ¹, G. Sureshrajan ², M. Siva Bharath ², X. Hervin Savariraj ², S. Akilesh ¹

Affiliations
1 Department of Mechanical Engineering, Sri Sairam Engineering College, Chennai - 600044, Tamil Nadu, IN
2 Department of Mechanical Engineering, DMI College of Engineering, Chennai - 600123, Tamil Nadu, IN

Abstract

Objective: The objective of this paper is to find the optimal machining parameters of Die-Sinking Electro-Discharge Machining on Inconel 825 alloy with nickel coated copper electrode for improving the process response. Methods: The effects of different parameters were studied on the machining responses. The machining parameters considered for this work were applied current, pulse on time and pulse off time and their effect on surface roughness response was studied. Findings: Taguchi optimization technique was employed to find the effect of machining parameters on Electro-Discharge Machining process responses. Besides, analysis of variance statistical method has been employed to predict the importance of individual machining parameters in the responses. The result of this research reveals that the proper selection of the input variables plays an important role in die-sinking EDM process. Applications: Ni base alloys are widely used in aviation, ship building and defense industries because of their better properties such as good impact strength, high ultimate tensile strength, high yield strength, high resistance to corrosion, retaining the strength even at high temperatures and fatigue resistance.

Keywords

Analysis of Variance, Die-Sinking EDM, Surface Roughness, Taguchi.

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J. Jeykrishnan ¹, B. Vijaya Ramnath ¹, X. Hervin Savariraj ², R. David Prakash ², V. R. Dhinesh Rajan ², D. Dinesh Kumar ²

Affiliations
1 Department of Mechanical Engineering, Sri Sairam Engineering College, Chennai, IN
2 Department of Mechanical Engineering, DMI College of Engineering, Chennai, IN

Abstract

Objectives: The scope of this work was to: 1. to fabricate Silicon Carbide (SiC) particle Metal Matrix Composites (MMC) by vortex method; 2. to investigate the effect of SiC particles on the tensile and impact behavior of SiC particle reinforced 6061 aluminum alloy composites. Recently, the material technology has seen many contemporary developments in the field of fabricating new materials which reinstates the current materials for different applications. Amidst these, the composite materials have an important aspect which is a combination of different materials possessing various physical and chemical properties. Methods: This Aluminum base metal Matrix Composite (AMC) has been manufactured by wrought aluminum alloy by varying the weight fractions of silicon carbide to compose five distinct forms of composites. Stir – casting has been chosen as the manufacturing technique, in this study. Findings: The manufactured composites were tested to determine their tensile and impact properties and the result proves that the sample with higher percentage of silicon carbide has better mechanical properties, comparably. Applications: This study essentially focuses on establishing AMC as they find applications on aerospace and automotive industries because of their admirable properties compared with the unreinforced alloys.

Keywords

Aluminum 6061, Mechanical Properties, Metal Matrix Composite, Silicon Carbide, Stir Casting.

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B. Murali ¹, B. Vijaya Ramnath ², D. Chandramohan ³

Affiliations
1 Department of Mechanical Engineering, Vel Tech, Avadi, Chennai - 600062, Tamil Nadu, IN
2 Department of Mechanical Engineering, Sri Sairam Engineering College, Chennai – 600044, Tamil Nadu, IN
3 Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Chennai-603103,Tamil Nadu, IN

Abstract

Objectives: In this analysis, natural fibers like, Jute, Kenaf and hemp; Jute and Hemp (mixture) Hemp and Kenaf (mixture), Jute and Kenaf (mixture) are invented with bio epoxy stick abuse forming system. This work, affects quality of Hemp and Kenaf (mixture), Jute and Kenaf (mixture) and Jute and Hemp (mixture) composite at dry and wet conditions were examined. Affect check were directed Izod affect testing machine and the little structure of the examples are checked by the Scanning magnifying instrument and contrast the leads with Ansys. Methods/Statistical Analysis: A synthetic check could be a subjective or quantitative strategy intended to demonstrate the presence of, measure, a substance or unit with the assistance of a chose compound specialist. The synthetic testing was performed in both sulphuric. The bits of the fiber strengthened polymer composite were initially weighed and after that drenched in the corrosive for around 24 hours. The pieces were then were made to a temperature of around 105°C and again weighed. The outcome uncovers the erosion resistance of the mixture polymer composites. Findings: Fiber-strengthened compound composites have contend a predominant parent for an extended time in an exceedingly style of uses for high particulate quality and modulus. The fabricate, utilize and expulsion of antiquated fiber-reinforced plastic, now and again made of glass, carbon or aramid fibers-reinforced thermoplastic and thermo-setting gums zone unit considered fundamentally on account of ecological issues. By characteristic fiber composites we tend to mean a material that is reinforced with strands, particles or platelets from regular or renewable assets, in refinement to for instance carbon or aramide filaments that should be integrated. The aftereffect of strands on effect quality for the examples prepared for each dry and wetness conditions. This check are regularly utilized as quick and basic inner control look at to work if a texture meets particular effect properties or to match materials for general sturdiness. Application/Improvements: Mixture fiber composites show halfway weak nature of break in view of the nearness of hemp strands. So by examining the protective cap display, and Experimental Results, it’s demonstrated that common fiber supported stuff of jute and hemp Hybrid material elements a property quality for the apparatus of Motor cycle Safety head protectors.

Keywords

Ansys, Bio Polymers, Hemp, Jute, Kenaf, SEM

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