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Venkatesha B K ¹, Deepak Kumar T ², B S Shivashankara ³, Sanman S ⁴

Affiliations
1 School of Mechanical Engineering, REVA University, IN
2 Department of Mechanical Engineering, UVCE, Bangalore University, IN
3 Department of Automobile Engineering, AIT, Bengaluru 560107, IN
4 Department of Mechanical Engineering, UVCE, Bangalore University, IN

Abstract

This paper presents the moisture absorption behaviour and its influence on mechanical properties of cenosphere filled hybrid bamboo-glass fiber reinforced epoxy composites (BGFRECs). The hand lay-up technique has been adopted with various weight percentages (0.5, 1.0, 1.5, and 2.0) of cenosphere as a filler content. The moisture absorption tests conducted in distilled-water, and saline-water for 10 days at room temperature. With the help of ASTM standards, the moisture absorption and mechanical properties of these composites have been estimated. The tensile and flexural strengths found to increase when filler percentage increases in different environmental treatments. The obtained results revealed that the cenosphere filler loading has a great impact on the moisture absorption and mechanical properties of the hybrid BGFRECs. However, the influence of moisture absorption presented a substantial drop in the mechanical properties of all the hybrid composites.

Keywords

Bamboo and glass fiber, cenosphere filler, hand lay-up, mechanical properties, moisture absorption

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Deepak Kumar. T ¹, Venkatesha B K ², Syed Sameer Hussain ³, Ramesha D.K ⁴

Affiliations
1 Department of Mechanical Engineering, University Visvesvaraya College of Engineering, Bangalore University, IN
2 School of Mechanical Engineering, REVA University, Bangalore 560064, IN
3 SECAB Institute of Engineering and Technology, Vijayapur, IN
4 Department of Mechanical Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bangalore 560001, IN

Abstract

The climate and fuel supply have been problematic emphasis on alternative fuels for combustion engines. Different research studies tested various alternative fuels. In this connection, biodiesel is the most promising diesel fuel based on a literature survey. In this paper, the prospects and potential for the use of biodiesel and increasing biodieseldiesel blending are studied by a fixed compression ratio, Optimum blending and enhanced performance engine parameter and pollution control should be proposed based on experiments. Experiments for a set compression ratio (17:1) undertaken utilising biodiesel cotton seed oil (CSME) diesel blends, i.e. B0, B10, B20, B30, without full loading rates, compared to the base cases (e.g. diesel engine fuel). The parameters may evaluate the fuel consumption and thermal efficiency of the brakes, Unburned hydrocarbons, and nitrogen oxides in emission of carbon monoxide. The results concluded that, B20 (20% biodiesel and 80% diesel) is the most efficient compared to other mixtures.

Keywords

Biodiesel, diesel engine, performance, emissions.

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Nagayya Nagayya ¹, M.K Venkatesh ¹, Nithesh Bhaskar N ¹, Venkatesha B K ²

Affiliations
1 Department of Mechanical Engineering, DSCE, Bengaluru, IN
2 School of Mechanical Engineering, REVA University, Bengaluru, IN

Abstract

Many industries such as oil, gas, aerospace, and automotive, use axisymmetric adhesively bonded single lap joints. Different materials are frequently mated using axisymmetric lap joints. When composite adherents delaminate, the stress circulation inside the adhesive layer significantly influenced. As a result, the importance of considering adhesive layer stresses in the presence of considerable delamination is investigated in this paper. To understand stress analysis and examine adhesive bond strength at static loading conditions, the model created using finite element analysis with cohesive zone modelling. A complete parametric study carried using simple finite element code in ABAQUS, the axisymmetric single lap joins adhesively bonded joints prepared with different material adherents. Analysis carried on the influence of numerous factors such as the distribution stress inside the adhesive joints. In this connection, mating of carbon reinforced polymer composite to titanium alloy adherends discussed thoroughly. The results show that depending on the position of the delamination, the presence of a throughout-the-thickness delamination affects the structural response of both single lap and axisymmetric adhesively bonded joints by varying overlap length. The presence of a delamination reduced adhesive peel and shear stresses significantly in both joint configurations

Keywords

Axisymmetric lap joint, carbon fiber, titanium alloy, finite element analysis.

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Mahadev Mahadev ¹, Narasimhe Gowda ², Pavan D ³, Venkatesha B K ³

Affiliations
1 Mechanical Engineering Department, Dayananda Sagar College of Engineering, Bangalore 560078, IN
2 Mechanical Engineering Department, Dayananda Sagar College of Engineering, Bangalore 560078, IN
3 School of Mechanical Engineering, Reva University, Bangalore 560064, IN

Abstract

In the latest years, because of the immoderate exploitation and growing use of petroleum for energy, present day industries and transportations are contributing to the direction of emission of exhaust gases including CO₂ and inflicting international warming. Bicycle is very environmentally friendly, safe, and efficient way of conveyance among the man powered vehicles and are a form of exercise with many other applications and advantages, the bicycle industries are promoting them as green products. The frame is the main component in a bicycle to support the external loads acting on it. As all the important accessories are mounted on the frame, different kinds of masses along with weight of rider, braking force, and the response from floor are immediately transferred to it. The frame needs to be strong, stiff, and lighter in weight, that is acquired through combining extraordinary substances and optimizing its structures. In this paper, the static, dynamic and fatigue evaluation of a bicycle frame is achieved to decide the life of frame, deformation, stresses, and von-misses stress appearing at the frame under loading circumstances for different materials. The frame modelling carried using CATIA V5R20 and simulation performed by ANSYS 19.0 Workbench software. From the analysis it is found that for all the cases the maximum stress is less than yield strength of selected materials, so the design is safe.

Keywords

(Finite element analysis) FEA, bicycle frame, CATIA, ANSYS.

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Sanman S ¹, Prashanth K P ², Venkatesha B K ³, Yuvaraj L ²

Affiliations
1 Department of Mechanical Engineering, Acharya Institute of Technology, Bengaluru, IN
2 Department of Automobile Engineering, Acharya Institute of Technology, Bengaluru, IN
3 Department of Mechanical Engineering, Alva’s Institute of Engineering and Technology, Moodabidire, REVA University, Bangalore, IN

Abstract

Aluminum based composites are generally used to build marine structures and liquid cargo containers because of its high strength and low weight. In the present investigation, the corrosion behaviour of B₄C particle reinforced Al-6061 alloy has been studied. The aluminumboron carbide composite were prepared using stir casting method by varying percentage of reinforcement from 6 to 12% in steps of 2%. Salt spray method was adopted to investigate the corrosion behaviour of the composite. The test was conducted for a period of 240 hours and for every 48 hours the weight loss of the specimens was measured. The extent of corrosion was measured by using weight loss method. The results showed that the corrosion resistance of the composite decreases with the increase in the percentage of boron carbide particulates. The optical microscope was used to analyze the corroded surfaces and corrosion mechanism. The pit initiation side tends to the possibility of the accuracy corrosion on the interface between the hard reinforced particles and matrix alloy.

Keywords

Corrosive, stir casting, aluminum alloy, boron carbide, metal matrix composites.

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Prashanth K P ¹, Venkatesha B K ², Sanman S ³, Venkatesh N ⁴

Affiliations
1 Department of Automobile Engineering, Acharya Institute of Technology, Bengaluru, IN
2 School of Mechanical Engineering, REVA University, Bengaluru, IN
3 Department of Mechanical Engineering, Acharya Institute of Technology,Bengaluru, IN
4 Department of Mechanical Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bengaluru, IN

Abstract

Developing a biodegradable polymer composite by using chitosan as matrix and natural fiber as reinforcement plays a vital role in order to increase mechanical properties. Chitosan has been exploited for its mucoadhesvie property which has tremendous biomedical applications in order to explore the mechanical and thermal capability. This study initialized with manufacturing of chitosan-based composite with three different natural fibers namely banana, coir, and sisal. The results of the incorporation of natural fibers with chitosan on the strength of composite blends were investigated. Further the prepared sample undergone Thermo gravimetric analysis and peel test to evaluate their thermal stability and adhesive property. The results indicate that the chitosan improves the thermal property of composites, whereas the increasing percentage of chitosan in peel test sample gets saturated hence the adhesive property gets deteriorate.

Keywords

Chitosan, TGA, peel test, biodegradable polymer, natural fibers.

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