Experimental correlation between process parameters and impact energy of value-added banana stem fibres and cow horn particles/polyester hybrid composites

The present work aims to enhance the mechanical performance of monolithic Al alloy and single reinforced metal matrix composite using a hybridization technique. The microparticles of alumina and boron carbide were reinforced into cast Al alloy (6061) in a systematic varying ratio (i.e.100/0, 75/25, 50/50, 25/75 and 0/100) to prepare the hybrid metal matrix composites via stir casting method. The mechanical properties (i.e. tensile, impact, hardness and flexural) of the prepared composites were investigated as per ASTM standards. Furthermore, microstructural analysis of unfractured and fractured composite samples was also carried out using Scanning Electron Microscope. It was observed that hybrid composites comprising of microparticles revealed an enhanced tensile, flexural and hardness properties, and reduced impact energy and porosity as compared to Al alloy and single reinforced metal matrix composites. The highest values of tensile strength and modulus were offered by a hybrid composite (B50A50), which was 40% and 52.12% higher than that of Al alloy. Furthermore, there was an improvement of 105.72% in flexural strength and a reduction of 23.88% in impact energy for composite B50A50 than that of Al alloy. The present developed hybrid metal matrix composites can be proposed to be used in automobile parts and construction applications.

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Characterization of Several Microcrystalline Cellulose (MCC)-Based Agricultural Wastes via X-Ray Diffraction Method

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.280.340 ◽

2018 ◽

Vol 280 ◽

pp. 340-345 ◽

Cited By ~ 2

Author(s):

Muhammad Hanif Sainorudin ◽

Masita Mohammad ◽

Nurul Huda Abd Kadir ◽

Nur Athirah Abdullah ◽

Zahira Yaakob

Keyword(s):

Sugarcane Bagasse ◽

Microcrystalline Cellulose ◽

Value Added ◽

Crystallinity Index ◽

Agricultural Wastes ◽

X Ray Diffraction ◽

X Ray ◽

Coconut Coir ◽

Pineapple Leaves ◽

Banana Stem

In this study, microcrystalline cellulose (MCC) was extracted from various types of local agricultural wastes. Four types of agricultural waste such as coconut coir, banana stem, sugarcane bagasse and pineapple leaves were collected, extracted and hydrolyzed into microcrystalline cellulose, using pre-treatment (alkaline and bleaching) and acid hydrolysis, respectively. The extracted MCC were analyzed and compared with those of commercially available MCC. The study of crystallinity behaviors of the obtained MCC was performed by X-Ray Diffraction (XRD) analysis. The XRD of MCC revealed that the crystallinity of pineapple leaves has the highest crystallinity index with 75% in value and closest compared to commercial MCC, 81.25%. The value of crystallinity index for banana stem is 74.55% followed by coconut coir, 72.73% and sugarcane bagasse, 66.50%. All of the MCC samples showed the similar pattern with the typical crystalline structure of cellulose I. The crystallite size of all MCC samples was calculated and found in the range of 4.04 – 5.14 nm. These extracted MCC that obtained from several agricultural wastes was supposed to have a high potential as value-added products in industrial applications.

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Experimental correlation between process parameters and tensile strength of polylactic acid/groundnut shell nanoparticle biocomposites

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-017-0448-1 ◽

2017 ◽

Vol 93 (1-4) ◽

pp. 717-726

Author(s):

O. S. Olajide ◽

S. A. Yaro ◽

F. Asuke ◽

O. Aponbiede

Keyword(s):

Tensile Strength ◽

Polylactic Acid ◽

Process Parameters ◽

Experimental Correlation ◽

Groundnut Shell

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Mechanical Behaviour of Hybrid Composites Prepared using Sisal-Pineapple-Kenaf Fibre

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.e4906.018520 ◽

2020 ◽

Vol 8 (5) ◽

pp. 3210-3214

Keyword(s):

Impact Strength ◽

Hybrid Composite ◽

Hybrid Composites ◽

Rupture Strength ◽

Value Added ◽

Natural Fibres ◽

Wear Properties ◽

Sisal Fibre ◽

Specific Strength ◽

Kenaf Fibre

Variety of application use fibre reinforced composites because of their intrinsic properties in mechanical strength, renewability and low production cost compared to conventional materials. Natural fibres are environmentally friendly their use will not break the budget when used as an alternative to the regular materials. Reinforcement used in polymer is either man-made or natural. Man-made synthetic, metallic, semi-synthetic, polymer fibres have superior specific strength but their high cost of production limits its application and feasibility to make composites. Recently there is a rise in use of natural fibres from various natural resources which are available abundantly. Composites based on natural fibres have their advantages of cost in making the fibres from different vegetables, wood, animals and minerals. In this work a thorough and systematic inquiry regarding better utilization of sisal fibre for making value-added products has been carried out. Various hybrid composite test specimens as per ASTM were prepared with natural fillers such as sisal-pineapple-Kenaf fibres by using hand layup method. The physical and mechanical characteristics of prepared hybrid composite with sisal fibre, pineapple fibre and kenaf fibre are the main objective the research. The various mechanical properties of the hybrid composites like tensile strength, rupture strength, impact strength, shear strength, hardness, and wear strength are studied by standard experiment methods. The experimental results were discussed. The experiments exposed that the use of sisal fibre when compared with similar fibres in a composite increase the most of the physical properties like tensile, rupture, wear properties of the material where as impact strength of the material is lowered. Surface morphology of the sisal fibre after tensile loading is studied microscopically.

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Review on Investigations Carried out on Burr Formation in Drilling During 1975 To 2020

Technological Engineering ◽

10.1515/teen-2019-0007 ◽

2019 ◽

Vol 16 (1) ◽

pp. 43-57 ◽

Cited By ~ 1

Author(s):

Reddy Sreenivasulu ◽

Chalamalasetti SrinivasaRao

Keyword(s):

Process Parameters ◽

New Technologies ◽

Value Added ◽

Vital Role ◽

Machining Process ◽

Burr Formation ◽

Optimum Process ◽

Drill Bit ◽

Optimization Of Process Parameters ◽

Almost All

Abstract Burr formation during machining process is a vital role in the assembly lines, even though it is a non value added process but also care should be taken while machining due to non avoiding output generated at the end of material removal process. At present almost all manufacturing sectors faces lot of problems due to these issues and invest more money towards deburring still advanced manufacturing methods available. So, complete burr removal is not possible and only thing is reducing utmost by applying better optimizing techniques, to develop good mechanization methods, selecting optimum process parameters and their conditions. The aim this paper deals about research methods implemented by earlier authors on burr formation especially in drilling. The reason why the present authors selected the drilling is number of automotive and aircraft engineers struggling during structural building works because of these burrs wherever precise measurement needed. In this connection, the authors concentrate their study on previous researcher works related to investigations on experimentation, developing new theoretical mechanisms to minimize burrs, adapt a new technologies available to modify drill bit geometries such that improvement in the minimization of burrs. Finally found that research contributions by changing their drill bit geometry and cutting process parameters have been focused on utilizing the methodologies, changing time to time. In analyzing the performance characteristics with that of input process parameters, several mathematical and empirical models were developed by many researchers so far in their works. Efforts have been made in the direction of optimization of process parameters in drilling for minimizing burr size.

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