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S Muthukumar S.,Vel Technology Multi Technology | Mathiyalagan P.,Vel Technology University
International Journal of Applied Engineering Research | Year: 2015

The wear resistance of material is an important requirement for many of the automotive, aircraft and aerospace components. In the present work abrasive and additive wear behaviour of Al-SiCp composites with different tests were studied. The Pin-on Disc wear testing machine has been fabricated to study the friction and wear behaviour of the Al-SiCp composites conditions. Also to study the characteristic friction and wear behaviour of Al-SiCp composite for application to engine parts under reciprocation conditions. The composites were manufactured by hot liquid infiltration technique. They concluded that fiber reinforcement significantly improved the abrasion résistance in mild abrasive situations; the abrasion resistance of the composites was equal to or, in some cases, even lower than that of the unreinforced materials. © Research India Publications. Source

Bala Saravanan C.,Vel Technology Rangarajan Dr Saguunthala R And D Institute Of Science And Technology | Sarasu P.,Vel Technology Multi Technology
International Journal of Soft Computing | Year: 2015

This study highlights that currently a technology has been found for implementation in wireless communication that is to be used at greater distance. But there are various existing technologies in the field of wireless communication to that (Bluetooth, Wi-Fi). And each one of them varies depending on their class of radio frequency. Its application could be used only for a maximum distance of 10-100 m from phone to phone. There is a big problem in increasing the distance to chat through this device (Bluetooth, Wi-Fi) for communication. Therefore, there is an introduced new technology "Sky Tie". This technology has been introduced as a new processing method for each of P2P communication. It increases the communication distance from one end to another end through Industrial, Scientific and Medical (ISM) radio bands 2.45 GHz maximum 5 km. This study will enhance the communication process with this Sky Tie wireless technology. © Medwell Journals, 2015. Source

Thanigaimani K.,Universiti Sains Malaysia | Khalib N.C.,Universiti Sains Malaysia | Arshad S.,Universiti Sains Malaysia | Razak I.A.,Universiti Sains Malaysia | Hemamalini M.,Vel Technology Multi Technology
Molecular Crystals and Liquid Crystals | Year: 2016

The 1:1 cocrystal of 2-amino-3-bromopyridine (2A3BP) with 4-methylbenzoic acid (4MBA) has been prepared by slow evaporation method in methanol, which was crystallized in monoclinic P21/c space group having two molecules in the asymmetric unit. The cocrystal has been characterized by single crystal X-ray analysis, FTIR, 1H NMR, 13C NMR, and Powder XRD. Theoretical investigations have been calculated by HF and density function (B3LYP) method with the 6-311+G(d,p) basis set. The vibrational frequencies together with the 1H NMR and 13C NMR chemical shifts have been calculated on the fully optimized geometry of 1. Theoretical calculations of bond parameters, harmonic vibration frequencies, and isotropic chemical shifts are in good agreement with the experimental results. Solvent-free formation of these cocrystal was confirmed by powder X-ray diffraction analysis. The crystal structure was stabilized by Npyridine - H···O = C, C = O - H···Npyridine and C - H···Br hydrogen bonding interactions. © 2016 Taylor & Francis Group, LLC. Source

Kuppusamy P.G.,Vel Technology Multi Technology | Gopal B.G.,Vel Technology Multi Technology | Prabhu V.,Vel Technology Multi Technology
International Journal of Applied Engineering Research | Year: 2015

Development of mobile phone communication infrastructure in the world has promoted which lead public concern over possible health effect exposure to radio frequency electromagnetic energy (RFEME) emanating from mobile phone antenna. The Micro-strip patch antenna plays an important role in electromagnetic energy transmitting and receiving phenomena in mobile phone. This paper makes an effort to assess the mobile radiation exposure effect on 4 years child, 8 years child and an adult head model. Hand held device model having micro strip antenna is used for human interaction. The software simulation performed by Computer simulation technique(CST) software based on Finite difference Time Domain technique yields specific absorption rate and 3D-thermal distribution on spherical human head. © Research India Publications. Source

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