Laxmana Naik - Academia.edu (original) (raw)

Papers by Laxmana Naik

International Journal of Composite Materials, 2017

The present work is undertaken to study the tensile property of sisal - glass fiber reinforced po... more The present work is undertaken to study the tensile property of sisal - glass fiber reinforced polymer based hybrid composites fabricated by vacuum bagging method. Each laminate consists of five plies of fabrics and resin mixture with 3 mm thickness as per different layering designation. The Specimen preparation and tensile test was carried out as per ASTM standards. It was observed that, tensile strength of the glass and sisal-glass fiber hybrid composites were higher than those of composites reinforced with sisal only, due to hybridization.

International Journal of Agricultural Science and Research, 2015

International Journal of Recent Technology and Engineering (IJRTE), 2020

The reported research explains energy saving opportunity in welding process dominated industry ca... more The reported research explains energy saving opportunity in welding process dominated industry carried out for different small and medium scale enterprises that produce components for agricultural applications. The study concentrates the energy audit on the agricultural implements and tractor trailer industries as the agriculture is the main occupation of India. A total number of 15 small and medium scale industries are considered for the energy audit. The investigations revealed welding operation as a major energy consumer in agriculture implement industries contributing to about 84% of the total energy consumption. The welding machine efficiency varies from 35% to 50% in the considered industrial clusters. Based on the results it is suggested that the energy saving can be increased by 40% - 45% by adoption of inverter arc welding technology.

Food Chemistry, 2015

Molecular imprinted polymer (MIP) against cephalexin was synthesized by co-polymerization of func... more Molecular imprinted polymer (MIP) against cephalexin was synthesized by co-polymerization of functional monomer, cross-linker, radical initiator, along with target molecule (cephalexin) in a porogenic material. Binding of cephalexin towards prepared MIP was studied in different solvents (water, methanol, 1M NaCl, acetone and acetonitrile) and best binding was observed in methanol. Partition coefficient and selectivity of prepared imprint and non-imprint was also studied. Cross reactivity in terms of binding efficiency was also assessed with other antibiotics. Chromatographic study of MIP was carried out by packing prepared imprint into glass column. MIP was used as matrix in solid phase extraction (SPE) for recovery of cephalexin from spiked milk samples for further estimation by high performance liquid chromatography. No interference was observed from milk components after elution of cephalexin from MIP, indicating selectivity and affinity of MIP. On the other hand, interference was observed in eluate obtained from C18 SPE column.

Journal of Animal Production Advances, 2013

Minimal processing is the subject of major interest for both food preservation and food preparati... more Minimal processing is the subject of major interest for both food preservation and food preparation. At present; thermal processing techniques, pasteurization and sterilization methods are extensively practiced to process milk and milk products, these techniques are well established and validated ensure consumer safety. But there is a need for novel; non-thermal processing technique, so that it can minimize the organoleptically and nutritionally damaged during thermal processing, thereby, maintaining the "freshness" of foods by reducing heat degradation of nutritional and other bioactive components. There are many alternate novel food processing techniques available, amongst them high pressure processing seems a very promising technique for dairy products, as it offers numerous opportunities for developing new shelf stable foods, retaining its natural nutritional value with excellent organoleptic characteristics. In this review, effect of high pressure processing on physico-chemical properties of milk and its constituents are discussed, with focus on fermented milk products. Packaging requirements along with legal and safety concerns also elaborated in brief.

In the present investigation experimental and analytical characterization of the high temperature... more In the present investigation experimental and analytical characterization of the high temperature (superplastic) deformation of AA5083 alloy was carried out. Uniaxial tensile test was performed in a temperature range of 748-823K at different initial strain rates. Further, a numerical procedure based on MATHEMATICA was developed to predict the tensile response of the alloy for the given deformation condition. Superplasticity is the ability of polycrystalline materials to exhibit, in a relatively uniform/isotropic manner, very large tensile elongations prior to failure, under appropriate conditions of temperature and strain rates. The phenomenon of superplasticity arising due to specific microstructural conditions is commonly referred to as "structural" superplasticity or "micrograin" superplasticity. This behaviour can be utilised in the shaping and forming of parts, components and structures which cannot be easily or economically produced from materials of normally limited ductility.

Dehusking of coconut is the major work after harvesting the coconut from the coconut plant. In ex... more Dehusking of coconut is the major work after harvesting the coconut from the coconut plant. In existing manual dehusking methods available equipment's causes injury to the personal [1]. Also, it gives husk, which is important material for coir processing industry. Considering the drawbacks of electrical/hydraulic dehusking methods such as power requirement, high initial cost etc., and manual coconut dehusker has been developed and the machine has a provision to dehusk all sizes of nuts. The major parts of manually operated coconut dehusker are blades, L- rod, disc lever, table, spring. Dehusking table is provided with three set of teeth's, which are opened and closed when operated with bottom disc plate. The teeth are placed 120 degree with each other in circular arrangement to accommodate the all sizes of coconuts. One set of fixed blades are welded to table and another set of three triangular shaped moving or opening teeth attached to end of the L-rods. The L-rods pivoted ...

American Journal of Materials Science, 2016

This work deals with the effect of sisal-glass fabric reinforced polymer composites fabricated by... more This work deals with the effect of sisal-glass fabric reinforced polymer composites fabricated by vacuum bagging method. Each laminate consists of five plies of fabrics and resin mixture with 3 mm thickness as per different layering designation. The water absorption tests were performed on immersing specimens into normal water. Specimen preparation and water absorption studies carried out as per ASTM standards. The present work reveals that the mixture of glass with sisal decreases the maximum water absorption.

This review article concerning about natural fibers like sisal and banana fiber reinforced polyme... more This review article concerning about natural fibers like sisal and banana fiber reinforced polymers, it gives possible applications in the material group. This paper is a review of the chemical and mechanical properties of natural fibers like sisal and banana reinforced polymer composites. Natural fibers are rich in cellulose and they are cheap and easily renewable source of fibers with the potential for polymer reinforcement. Natural fibers are emerging as low cost, lightweight and apparently environmentally superior alternatives to glass fibers in composites. In most of the cases, the specific properties of the natural fiber composites were found to compare favorably with those of glass. Keywords— Sisal, Banana, Polymers, Chemical properties Mechanical properties.

This research work has been focusing on Hemp fibers has an alternative reinforcement for fiber re... more This research work has been focusing on Hemp fibers has an alternative reinforcement for fiber reinforced polymer composites due to its eco-friendly and biodegradable characteristics. This work has been carried out to evaluate the mechanical properties of hemp/E-glass fabrics reinforced polyester hybrid composites. Vacuum bagging method was used for the preparation of six different kinds of hemp/glass fabrics reinforced polyester composite laminates as per layering sequences. The tensile, flexural, impact and water absorption tests of these hybrid composites were carried out experimentally according to ASTM standards. It reveals that an addition of E-glass fabrics with hemp fabrics can increase the mechanical properties of composites and decrease the water absorption of the hybrid composites.

The purpose of this research work is to evaluate and compare the mechanical properties of laminat... more The purpose of this research work is to evaluate and compare the mechanical properties of laminates prepared of different composition of Banana and E-Glass fabrics. The mechanical properties evaluated are tensile strength, flexural strength, impact strength and hardness. The density of each of the laminates and water absorption properties are also evaluated. The six laminates of banana and E-glass fabrics of dimension 240*240*3 mm 3 is fabricated by hand layup and vacuum bagging method. The impregnation of laminates is done by using polyester resin as matrix material. Finally, curing is done in the autoclave for 4 hours at 70 0 C. From the results of the testing process, it is found that the maximum tensile strength, maximum flexural strength, maximum impact strength and maximum hardness is observed in pure glass fabric laminate and minimum in pure banana fabric laminate. The pure E-glass fabric laminate absorbs more amount of water and pure banana fabric laminate absorbs minimum am...

Titanium (Ti-Al-Mn (OT4-1)) alloy is currently being used for aero engine components as well as o... more Titanium (Ti-Al-Mn (OT4-1)) alloy is currently being used for aero engine components as well as other aerospace applications by forming through a conventional route which is typically cost, labour and equipment intensive. Titanium alloys such as Ti-6Al-4V is expensive because of the alloying additions like Vanadium are extremely expensive, still this alloy is widely used in aerospace applications by manufacturing the components through superplastic route. The alloy Ti-Al-Mn (made as per the Russian specification, OT4-1) could be a candidate material for replacing the costly Ti-6Al-4V alloys. In the present investigation, tensile tests were carried out on this alloy in the temperature range of 1073 K to 1173 K (800 to 900C) in the strain rate range of 1x10 to 1x10 s in order to characterize the high temperature superplastic deformation behavior. A maximum elongation of 450% was observed at 1123 K at an initial strain rate of 5.52x10 s indicating superplastic behavior of this alloy. ...

ADVANCED TRENDS IN MECHANICAL AND AEROSPACE ENGINEERING: ATMA-2019

Graphene is a super material in the material science world because of high surface area, excellen... more Graphene is a super material in the material science world because of high surface area, excellent thermal conductivity, high electron mobility, high young’s modulus, high light transmittance. In this work, a recent review is carried on Graphene based polymer composites and their applications. Different properties such as mechanical, thermal, electrical and medical properties of Graphene based polymer composites are discussed. Potential applications and development in the field of polymer composites, synthesis and processing are discussed and their vital roles are elaborated.

IOP Conference Series: Materials Science and Engineering

In this paper, fracture behavior and Mechanical properties of short banana fiber reinforced polym... more In this paper, fracture behavior and Mechanical properties of short banana fiber reinforced polymer composites is investigated. Fibers are extracted from banana plant,Further compositelaminates were prepared with randomly distributed fiberswith different weight fraction of banana ranging from 30%, 35% and 40%. Composites are prepared using hand layup technique.Tests were performed to determine fracture toughness(Mode I) and mechanical properties of these laminates.The tests were performed to examine the effect of weight fraction of fiber on the fracture toughness of the composite.As epoxy is a brittle material, stress intensity factor is utilized to evaluate the fracture toughness of the composites.From the experimental results were carried out on different weight fractions of banana. It is observed that the 40 % of banana fiber shows maximum fracture toughness,Composite plate of 30% shows the maximum tensile strength.

Natural Resources, 2016

In the present scenario, there has been a rapid attention in research and development in the natu... more In the present scenario, there has been a rapid attention in research and development in the natural fiber composite field due to its better formability, abundant, renewable, cost-effective and eco-friendly features. This paper exhibits an outline on natural fibers and its composites utilized as a part of different commercial and engineering applications. In this review, many articles were related to applications of natural fiber reinforced polymer composites. It helps to provide details about the potential use of natural fibers and its composite materials, mechanical and physical properties and some of their applications in engineering sectors.

World Journal of Engineering and Technology, 2015

Ginger is a potential agricultural commodity to be developed in India. When the harvest comes, pe... more Ginger is a potential agricultural commodity to be developed in India. When the harvest comes, people still use a very simple method for harvesting ginger by using hoes, pick-axe and other farming equipments. The farmers complain for the need of so many work forces for harvesting while the labor cost is getting increased and the time spent for harvesting process is too long. Although there is an alternative of imported ginger harvesting machines, those machines are not compatible with the farming environment in India, having a high initial and maintenance cost. This machine can be used in any farming condition in India and can be prepared at village level. This machine has three main parts namely, ginger digger, screener and power transmission system. This project is focusing on design and fabrication ginger harvesting machine. The screener will not only separate ginger from soil but also not let the ginger get harmed. The screener also uses for collectible part, to make this machine need some power transmission system from the engine. This machine needs Auto front petrol engine with rotation speed 20-25 rpm approximately with the aid of gear reduction.