Basavanna Shivamurthy

Manipal Institute of Technology, Manipal Academy of higher education, India. · Mechanical & Manufacturing Engineering

This study explores the effects of four independent variables-the nanoclay weight percentage , sliding velocity, load, and sliding distance-on the wear rate and frictional force of nanoclay-filled FormuLITE TM amine-cured bio-based epoxy composites. An experimental design based on the Taguchi method revealed diverging optimal conditions for minimiz...

Polymer nanocomposites have attracted global attention as a metal replacement for electrical and electronic applications. Graphene nanoplatelets (GNPs) are widely used as a nanoreinforcement to enhance the functional and structural properties of thermoset and thermoplastic polymers. In the present study, ABS nanocomposites were prepared by reinforc...

In this work Graphene nanoplatelets (GNPs) filled with Linear low-density polyethylene (LLDPE), nanocomposite films designated as LLDPE+1%GNP and LLDPE+5% GNP were manufactured using LLDPE pristine granules, 1 wt. % GNPs-LLDPE, and 5wt. % GNPs-LLDPE masterbatch granules by the extrusion-blow molding process. It was found that the ductile behaviour...

The incorporation of nature’s design and development in the higher science education system and research practice is emphasized to foster improved awareness of foundational skills in molecular biology among learners. Multiple perspectives through the prism of global interest in molecular biology will have a huge ripple effect throughout the world o...

The combination of awareness of harmful industrial processes, environmental concerns, and depleting petroleum-based resources has spurred research in developing sustainable materials from renewable sources. Natural bio-based polymers have replaced synthetic polymers because of growing concern about environmental sustainability. As a result of heati...

Hexagonal boron nitride (hBN) and molybdenum disulfide (MoS2) fillers of 2 to 8 wt.% influence on toughness, microhardness and thermal stability of carbon fabric-reinforced epoxy composite (CFREC) reported. Mode-I, mixed-mode I/II toughness and microhardness of CFREC improved due to the addition of hBN and MoS2 separately upto 6 wt.% filler loading...

In this study, a methodology combining finite element analysis (FEA) and artificial neural network (ANN) through multilayer perceptron architecture was utilized to predict the impact resistance behavior of hybrid and non-hybrid fabric reinforced polymer (FRP) composites. A projectile at 250 m s ⁻¹ impact velocity was considered for the high velocit...

This study investigates the applicability of carbon and glass-based hybrid fabric reinforced polymer composites for ballistic applications due to their high specific strength, corrosion and impact resistance properties. The high velocity impact response of glass and carbon fiber-epoxy composites have been numerically investigated using ANSYS LS-Dyn...

High-velocity impact resistance of FRP composites consisting of Kevlar, carbon and glass in hybrid and non-hybrid stacking sequences was studied through experimental and finite element analysis. Neat Kevlar/epoxy and Kevlar/glass/epoxy sandwich composites have the 1st and 2nd highest impact energy absorption percentage (100% and 97.99%, respectivel...

Resistive zinc oxide (ZnO) sensors play a pivotal role in detecting various gases and vapors due to their high response, low cost, stability, tunability, and simple fabrication. Hence, it is necessary to know the recent status of research in resistive ZnO sensors. The sensitivity is determined by the reactions at the surface of the nanofiber (NF);...

Study of low-velocity impact (LVI) performance of fabric reinforced polymer (FRP) composites has drawn keen interest from the research community due to its application in various fields. In this direction, material designers and scientists have reported the behavior and performance of advanced composites subjected to LVI. In this paper, the existin...

High-velocity impact-resistant helmets are used by police forces, law enforcement and military personnel, firefighters, as well as civilians working in construction, manufacturing, mining and material handling industries among other sectors as protection against impact damage caused by projectiles of various shapes and sizes. In this study, an atte...

Welding is a vital component of several industries such as automotive, aerospace, robotics, and construction. Without welding, these industries utilize aluminum alloys for the manufacturing of many components or systems. However, fusion welding of aluminum alloys is challenging due to several factors, including the presence of non-heat-treatable al...

In this study, non-hybrid and hybrid (Kevlar, carbon and glass) fabric epoxy composite laminates were fabricated with different stacking sequences by hand lay-up followed by hot-compression molding. Experimental tests were conducted to investigate tensile, flexural, and hardness characteristics. It was found that the stacking sequence did not signi...

This work aims to evaluate the effect of post-heat treatment and quenching on the hardness, coating thickness, morphology, wear, and microstructure of the coatings made on steel travelers. The test result shows that all the quenched samples have similar hardness. Wear tests of the specimens show that Type-I oil quenched specimens have better wear r...

The energy absorption due to low-velocity impact on non-hybrid and hybrid (Kevlar-K, carbon-C, and glass-G) fabric reinforced epoxy composite laminates were studied by conducting standard drop weight tests. The experimental energy absorption results were compared with finite element analysis results. Both values were in good agreement with a maximu...

Multiwalled Carbon Nano Tube (MWCNT) flled glass fabric reinforced epoxy composites (MWCNT/GEC), and neat GEC were prepared by hand-lay-up followed by hot compression molding method. As per the ASTM standard, specimens were prepared and investigated the infuence of the addition of MWCNTs on fammability properties of GEC through the UL-94 vertical f...

Multi-layered carbon fabric-epoxy composites (CFEC) encounter certain challenges in expanding their usage mainly due to their low interlaminar shear strength (ILSS) and sensitivity to delamination damage. The present article focuses on evaluating the effectiveness of the fillers molybdenum disulfide (MoS2) and hexagonal boron nitride (h-BN) (2 to 8...

Neat glass fabric/epoxy composites (GECs) and multi-wall carbon nanotube/glass fabric/epoxy composites (MWCNTGECs) were prepared by hand-lay-up followed by compression molding technique and investigated the structural properties. It is found that the mechanical properties and wear resistance of the glass fabric reinforced epoxy composite improved u...

Cu2SnSe3 has been considered as a potential thermoelectric material owing to its cost-effective and nontoxic constituent elements along with its high electrical conductivity. However, its low Seebeck coefficient has been a concern towards realizing a high figure-of-merit. In the present study, Cu2SnSe3/xSnSe (x = 0, 5, 10, and 20 wt %) composite sa...

The mechanical and tribological performances of glass-epoxy (GE) and carbon-epoxy (CE) pre-peg composites are presented in this paper. Composites were prepared from their respective pre-pegs using compression molding technique. The mechanical and three body abrasive wear tests were conducted as per ASTM standards. Evaluation of mechanical propertie...

Natural fiber reinforced polymer composites have proved to be fit for use in several structural and functional applications. Jute fiber reinforced epoxy composites are one of the most preferred natural fiber-based polymer composites. The emerging need for high strength application while considering environmental sustainability and with the advent o...

Fiber-reinforced polymer (FRP) composites are widely being used for structural applications due to their attractive properties. Particularly, to fabricate complicated structures by FRP composites, joining composite structure elements through fasteners require drilled holes. More than 60% of the structural FRP components are rejected owing to poor q...

A study of high-velocity impact behavior of multi-layer nanopolymer composites has been one of the most exciting research topics in materials science and engineering. The material researchers and designers developed and investigated the behavior of advanced materials suitable for impact resistance. Background information and current research activi...

Green composites, because of its economic advantages and contribution to environmental sustainability, finds its wide range of applications in several industrial sectors. Mechanical characterization of any engineering materials is of utmost importance in the manufacturer's point of view. The present article demonstrates the work concerning the fabr...

The estimation of gear tooth stiffness is important for finding the load distribution between the gear teeth when two consecutive sets of teeth are in contact. Based on dynamic model a C program has been developed to compute mesh stiffness. By using this program position dependent mesh stiffness of spur gear tooth for various profile shifts have be...

Green composites, because of its economic advantages and contribution to environmental sustainability, finds its wide range of applications in several industrial sectors. Mechanical characterization of any engineering materials is of utmost importance in the manufacturer’s point of view. The present article demonstrates the work concerning the fabr...

The increased need for power generation has led to exploration of the untapped naturally available, renewable energy sources. The researchers worldwide focus on the application of green engineering principles with the motive to create lesser or zero pollution of the environment. Ocean currents possess remarkable potential capability to generate pow...

The increased need for power generation has led to exploration of the untapped naturally available, renewable energy sources. The researchers worldwide focus on the application of green engineering principles with the motive to create lesser or zero pollution of the environment. Ocean currents possess remarkable potential capability to generate pow...

Waste tyre rubber/epoxy composites were prepared with 15, 30 and 45 wt% of recycled waste tyre rubber (WTR) particles (size:100 μm, 200 μm, and 300 μm) as fillers in the epoxy matrix by open moulding method followed by post-curing at elevated temperature. The physical, mechanical and sliding wear behaviour of the composites were investigated. Due t...

Hybrid filler loaded multi-layer polymer composites are becoming one of the suitable alternative material for electromagnetic interference shielding (EMIS) applications. Mainly these composites are manufactured by conductive/magnetic fabrics, foams, foils or films or a combination of all, layered in an orderly architecture to obtain effective EMIS....

Banana short fiber/Al(OH)3/epoxy composite laminates were prepared by dispersing short banana fiber and Al(OH)3 particulates in an epoxy matrix and investigated for their specific wear rate, water intake, flammability and mechanical properties. The sliding wear results showed that due to the synergistic effect of both fiber and filler in epoxy matr...

Cryogenic treated multilayered carbon fabric/oxidized multiwall carbon nanotube/epoxy (CCF/O-MWCNT/E) composite and untreated carbon fabric/epoxy (CF/E) composite were prepared by hot compression molding technique. The density and mechanical properties such as tensile properties, flexural properties, interlaminar shear strength, and microhardness o...

In this paper the ultrasonic test performance of water based Methylcellulose couplant on steel is reported. The couplant used in the ultrasonic testing has an influence on the amplitude of the pulse echo signal. The ultrasonic energy which is transmitted from the transducer to the test material, through the couplant which is present in the interfac...

The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due to compression of air-lubricant mixture (churning losses) and windage losses due to aerodynamic...

In this paper the ultrasonic test performance of water based Methylcellulose couplant on steel is reported. The couplant used in the ultrasonic testing has an influence on the amplitude of the pulse echo signal. The ultrasonic energy which is transmitted from the transducer to the test material, through the couplant which is present in the interfac...

The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due to compression of air-lubricant mixture (churning losses) and windage losses due to aerodynamic...

In this study, laminates of neat glass fabric/epoxy composite (GEC) and three levels of Al2O3 filled glass fabric/epoxy composites, designated as 3AGEC, 6AGEC and 9AGEC (micro particulates of Al2O3 - by 3,6 and 9 wt. % of resin respectively) were prepared using hand lay-up method. 3AGEC exhibits higher tensile strength, flexural strength and flexur...

Drilling using twist drills is a frequently employed machining operation in carbon fiber reinforced polymer (CFRP) composite for generating holes for structural assemblies. In the present work, the effect of drill diameter, spindle speed, feed rate and point angle on thrust force and torque during drilling of bi-directional carbon fiber reinforced...

In the present research work, the effect of abrasive water jet (AWJ) machining parameters such as jet operating pressure, feed rate, standoff distance (SOD), and concentration of abrasive on kerf width produced on graphite filled glass fiber reinforced epoxy composite is investigated. Experiments were conducted based on Taguchi’s L27 orthogonal arr...

Jatropha seed cake particulate (JSCP)-reinforced epoxy composites were prepared by open mold resin casting method. The influence of JSCP on mechanical and dry sliding wear properties of epoxy was experimentally investigated as per the ASTM standards. Dry sliding wear test was conducted for these composites at a constant sliding distance of 500 m wi...

In this work an attempt was made to evaluate wear loss, specific wear rate and coefficient of friction of Glass-Epoxy (G-E) composites with and without Tantalum Niobium Carbide (Ta/NbC) filler. A vacuum assisted resin transfer moulding (VARTM) technique was employed to fabricate the composite specimens. The fabricated wear specimens were tested by...

Hybrid composites of bi-directionally woven E-glass cloth/epoxy containing different amounts of silica were fabricated by compression molding. Composites were characterized as per ASTM standards for their tensile and flexural behaviours, inter laminar shear strength (ILSS), impact strength, surface hardness and density. The effect of silica content...

E-glass fabric/nano aluminum hydroxide (ATH)/epoxy composites were prepared by manual lay-up and compression molding. An image processing tool was used to quantify fineness of dispersion of nano-ATH particles in epoxy. Fourier transform infrared (FTIR) spectroscopy was used to understand the interaction between nano-ATH and epoxy. Mechanical proper...

Multi-layered laminates of bi-directionally woven E-glass fabric/epoxy with different loading of graphite particles were made by hand layup followed by compression molding. Tensile and flexural behaviors, impact strength, hardness and density of these laminates were determined. Wear behaviors of these composites were investigated by a pin-on-disc w...

The design, fabrication, and testing of an epoxy-glass reinforced polymer composite pressure vessel suitable for high-pressure gas storage have been reported. In this study composite pressure vessels are made up of aluminum alloy 6063 seamless liner and glass/epoxy composite reinforcement. The aluminum liner, which is developed by extruded aluminum...

Nano particulate composites with Al-Si alloys (LM6 and LM25) as matrix and Multiwall Carbon Nanotube (MWNT) as reinforcement (0.25, 0.5, 0.75, 1.0 and 1.5 weight percentage) have been fabricated by powder metallurgy process. Damping specimens were prepared according to ASTM E 756-05 standard and the specimens were subjected to free vibration test t...

The E-glass woven fabric-epoxy (LY 556) (GE) composites have been fabricated with varying amounts of silicon oxide (SiO2) particulate filler viz., 3, 6 and 9 wt % by compression molding followed by hot curing. The fabricated composites were characterized by mechanical properties such as tensile behaviour, flexural behaviour and interlaminar shear s...

In this investigation E-glass epoxy composite filled with different amount of graphite particles were prepared by compression. Plain waived E-glass cloth with density 200g / meter square was used as reinforcement. Epoxy resin LY556 mixed with Hardener HT907 and accelerator DY063 in the ratio 100:80:2 were used as matrix. The graphite of 50 particle...

In this investigation E-glass epoxy composite filled with different amount of quartz powder were prepared by compression moulding and hot curing. Plain waived E-glass cloth with density 200gm / meter square was used as reinforcement. Epoxy resin LY556 mixed with Hardener HT907 and accelerator DY063 in the ratio 100:80:2 was used as matrix. The quar...