i-manager's Journal on Material Science (JMS)


Volume 9 Issue 1 April - June 2021

Research Paper

Experimental and Numerical Research on the Effect of Winding Angles on the Torsional Strength of Glass Fiber Winding Hybrid Aluminium Shaft

Bhupendra Pardhi* , Murlidhar Patel**
* Department of Mechanical Engineering, Institute of Technology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, India.
** Department of Mechanical Engineering, PDPM Indian Institute of Information Technology, Design and Manufacturing (IIITDM), Jabalpur, Madhya Pradesh, India.
Pardhi, B., and Patel , M. (2021). Experimental and Numerical Research on the Effect of Winding Angles on the Torsional Strength of Glass Fiber Winding Hybrid Aluminium Shaft. i-manager's Journal on Material Science, 9(1), 1-12. https://doi.org/10.26634/jms.9.1.18268

Abstract

The present work deals with the torsional behaviour of the glass fiber wounded aluminium shaft. This hybrid composite shaft consists of an aluminium tube wounded with three layers of glass/epoxy. In this paper, experimental as well as numerical evaluation of the maximum torsion strength capacity of the hybrid composite shafts at the different winding angles (300, 450 and 600) are presented. The torsion behaviour has been experimentally analysed for the hybrid composite shafts using an axial torsion machine at room temperature. For finite element analysis (FEA) of the hybrid composite shaft, the CATIA modelling software has been used for designing, and ANSYS software has been used to analyse the torsional behaviour of the designed hybrid composite under static torsion. Good agreements were predicted between the numerical and experimental results. Both numerical and experimental results show that the static torque capacity of the hybrid composite shaft is significantly affected by the winding angle, and the maximum static torsional capacity of the hybrid composite aluminium shaft has been found at a winding angle of 450.

Research Paper

Magnetic and Multiferroic Behaviour of Sm/Zr Substituted Mg-Mn Ferrites

G. Bhanu Praveen * , Pyla Aruna **, A. Durga Prasada Rao ***
* Chaitanya Engineering College, Visakhapatnam, Andhra Pradesh, India.
** Department of Engineering Chemistry, Andhra University, Visakhapatnam, Andhra Pradesh, India.
*** Department of Nuclear Physics, Andhra University, Visakhapatnam, Andhra Pradesh, India.
Praveen, G. B., Aruna, P., and Rao, A. D. P. (2021). Magnetic and Multiferroic Behaviour of Sm/Zr Substituted Mg-Mn Ferrites. i-manager's Journal on Material Science, 9(1), 13-22. https://doi.org/10.26634/jms.9.1.18308

Abstract

Two series of Sm/Zr substituted Mg-Mn ferrite materials with bulk and nano sizes are developed whose compositions are Mg0.95Mn0.05Sm2xFe2-2xO4 and Mg0.95Mn0.05+xZrxFe2-2xO4 in which x value varies from 0.0 to 0.5. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), remnant ratio ®, magneton number (nB) and Curie temperature values are evaluated with initial permeability. Results are explained based on the exchange interactions of magnetic ions with the existing models. Decrease of particle size has a great impact on physical parameters. Variation of saturation magnetization (Ms) and dielectric constant as a function of temperature are performed to verify the multiferroic nature of the present materials. The final results of Sm3+/Zr4+ (samarium/zirconium) substituted Mg-Mn ferrites indicated that they obey both ferroelectric and ferromagnetic nature and are considered as multiferroic materials.

Research Paper

Tribological Properties of a Glass-Fiber-Reinforced Epoxy Composite Brake Pad

Shado A. S.* , Aliu Ebenezer Tayo **, Bilal Abdulrahmon Akanni***
*-** Department of Glass and Ceramic Technology, School of Science and Computer Studies, Federal Polytechnic, Ado-Ekiti, Nigeria.
Samuel, S. A., Tayo, A. E., and Akanni, B. A. (2021). Tribological Properties of a Glass-Fiber-Reinforced Epoxy Composite Brake Pad. i-manager's Journal on Material Science, 9(1), 23-31. https://doi.org/10.26634/jms.9.1.18307

Abstract

The aim of this study is to design and develop a brake pad that is efficient and low cost with varied constituent composition. The materials used include graphite, fiber glass, iron filling, silica, epoxy resin, hardener and calcite. Composite mixtures were molded. Samples of the developed brake pads were examined by measuring their mechanical, physical, and tribological properties such as wear rate, impact, tensile stress, flexural strength, and specific gravity. SEM/EDX techniques were used to analyze some of the mechanical proprieties. The results from the study established that an increase in the amount of binder (epoxy resin) and a decrease in reinforcement leads to an increase in toughness and a low wear rate. Furthermore, a decrease in the quantity of reinforcing fibers gave rise to increase in flexural strength and tensile stress.

Research Paper

Study on Optical and Magnetic Properties of Zno:Ag Nanograins by La and Y Codoping Using Solution Combustion Method

V. Padmavathy* , S. Sankar**
*-** Department of Physics, Madras Institute of Technology, Anna University, Chennai, Tamil Nadu, India.
Padmavathy, V., and Sankar, S. (2021). Study on Optical and Magnetic Properties of Zno:Ag Nanograins by La and Y Codoping Using Solution Combustion Method. i-manager's Journal on Material Science, 9(1), 32-37. https://doi.org/10.26634/jms.9.1.18176

Abstract

Transition and rare earth codoped ZnO semiconductors finds greater importance in advanced functional materials due to their unique and versatile properties. La and Y codoped ZnO:Ag nanograins were synthesized using solution combustion method. The synthesized ZnO:Ag nanograins were annealed for 5 hours at 1100 °C. The structural, morphological, optical and magnetic properties have been investigated. X-ray diffraction analysis showed high intense diffraction peaks patterns which represent the high crystalline quality of synthesized nanograins and the emergence of face centered cubic phase of metallic Ag at (1 0 1) preferred orientation for silver doped ZnO samples. The Scanning Electron Microscopy (SEM) visualized the surface morphology of the title nanograins. The optical properties of the synthesized nanograins are studied and the presence of atomic vibrational modes of bonded molecules has been confirmed using Fourier-transform infrared (FT-IR) spectral analysis. The vibrating sample magnetometer (VSM) studies are performed to analyse the magnetic behaviour of the nanograins. Room temperature magnetization measurements of the rare earth codoped ZnO:Ag samples featured a weak hysteresis loops in M-H curve and a well ordered paramagnetic structure for silver doped samples. The squareness ratio has been estimated from M-H loop to check the quality of the prepared ZnO samples. The study revealed that the transition and rare earth codoped ZnO nanograins are promising material suitable for opto-electronic quenching devices.

Research Paper

Evaluation of Mechanical Properties of Al6061-ZrO2 – Al2O3 Hybrid Metal Matrix Composites

R. Srinivasan * , P. Rahul**, P. Mukesh***, Y. Yashwanth****
*-**** Department of Mechanical Engineering, SRM Valliammai Engineering College, Kattankulathur, Tamilnadu, India.
Srinivasan, R., Rahul, P., Mukesh, P., and Yashwanth, Y. (2021). Evaluation of Mechanical Properties of Al6061-ZrO2 – Al2O3 Hybrid Metal Matrix Composites. i-manager's Journal on Material Science, 9(1), 38-47. https://doi.org/10.26634/jms.9.1.18283

Abstract

In the recent years, metal matrix composites play a vital role in the automobile and aerospace industries due to its high strength to low weight. This research is focused on evaluation of mechanical properties of hybrid metal matrix composite of Al6061-ZrO2-Al2O3 by varying weight percentage of reinforcement from 0 to 5% of zirconium oxide (ZrO2) and aluminium oxide (Al2O3), and hybrid composite were fabricated by stir casting process. The hybrid metal matrix composites were subjected to different mechanical test to determine tensile, hardness and impact tests, and the samples used were machined from the fabricated parent composite in accordance with the ASTM standard. When compared with the base hybrid composite alloy matrix, the tensile strength, hardness, and impact strength of the hybrid composite increased by 24.3 %, 25 % and 0.7 % with the reinforcement addition of ZrO2 by 3% weight and Al2O3 by 2% weight. It has been observedthat, improvement in the impact strength were low, due to highly brittle nature of reinforcement particle, and it resisted the percentage elongation of metal matrix composites (MMCs) and ensured that there is good bonding between matrix and reinforcement particle.

Research Paper

Photocatalytic Activity of Hydrazine Hydrate Passivated Zno Nanostructures Synthesized by Hydrothermal Method

N. Srinivasan Arunsankar * , M. Anbuchezhiyan **
* Department of Physics, Sri Sai Ram Engineering College, Chennai, Tamil Nadu, India.
** Department of Physics, SRM Valliammai Engineering College, Kattankulathur, Tamil Nadu, India.
Arunsankar, N. S., and Anbuchezhiyan, M. (2021). Photocatalytic Activity of Hydrazine Hydrate Passivated Zno Nanostructures Synthesized by Hydrothermal Method. i-manager's Journal on Material Science, 9(1), 48-53. https://doi.org/10.26634/jms.9.1.18175

Abstract

Zinc oxide (ZnO) nanostructures have been synthesized using zinc acetate dehydrate and deionised water as precursors by the hydrothermal method. To investigate the morphology and size of the ZnO nanostructures, different concentrations of organic ligand hydrazine hydrate were added as a passivating agent to the precursor solution. The crystal structure of the synthesized samples were analysed by X-ray diffractometer. The influence of variation of hydrazine hydrate concentration in the synthesized samples has been investigated from the field emission scanning electron microscope images. From the diffuse reflectance spectroscopy studies, the optical absorption and band gap of the samples were determined. The samples were examined for morphology and size dependent photocatalytic activity against the degradation of methylene blue organic dye under visible light irradiation.