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Enhancing the thermal conductivity of polymer composites

Carbon fiber-reinforced Polymericomposites (CFRP) are becoming most important structural materials for aircraft structures, satellites, missiles, and other aerospace applications. However, extending these materials for thermal and electronic applications is restricted by the poor thermal conductivity. In order to improve the thermal conductivity of CFRP composites, two methods were followed. In the first method, the polymer matrix was made conductive by incorporating various fillers (copper powder, carbon nanotubes and graphene ). Using these conductive matrices, CFRP composites were developed by vacuum bag molding technique. In the second approach, in addition to fillers, a continuous copper mesh was embedded for fabricating the CFRP composite. The in-plane and out- of -plane thermal conductivity of the CFRP composites was measured by hot disc. From the results obtained, it was found that the in-plane thermal conductivity of the CFRP decreased with the filler inclusion whereas the out- of- plane conductivity of the composite was enhanced. In case of copper mesh embedded CFRP composites, both in the plane and out of plane thermal conductivity was enhanced Further, the effect of filler addition and copper mesh inclusion on the mechanical strength was studied by measuring the interlaminar shear strength(ILSS) and was substantiated by NDT characterization.

Published by: Rakesh S., A. Vanaja, B. N. Sarada, S. Jayasankar, T. Padmavathi, Jyotsna Kiran Mathad

Author: Rakesh S.

Paper ID: V4I5-1184

Paper Status: published

Published: October 16, 2018

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Research Paper

Implementation of Substation Automation Systems using IEC 61850

Electric power system substations are being modernized to better serve user requirements for more efficient communication and more comprehensive protection and to facilitate future expansion by installing and applying higher-performance IEDs. There is a demand for a Substation Automation System (SAS) that is simple to integrate and provides high performance and flexibility. IEC 61850 capacities provide interoperability and advanced communications capabilities in substation protection, coordination, control, monitoring, metering, and testing. IEC 61850 is the result of the efforts of IEC Technical Committee 57 (TC57) to produce an open standard for substation modelling and communications. Substation configuration description language (SCL) is used in IEC61850-based substations to create substation configuration description files that contain full information about the substation. The main purpose of this format is to ensure that IED capability and substation descriptions are exchanged in a compatible way between the IEDs.

Published by: S. B. Mane, Twinkle Doshi

Author: S. B. Mane

Paper ID: V4I5-1430

Paper Status: published

Published: October 16, 2018

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Research Paper

Studies of effect of hardness property of aluminium metal matrix composites by heat treatment

The Al6061 alloy matrix materials exhibiting excellent mechanical properties with the addition of SiC and B4C particulates as reinforcement. Liquid Metallurgy route is preferred for preparing composite specimen materials. Composites were subjected to heat treatment process followed by quenching in castor oil. Then all the specimens are subjected to artificial aging at a temperature of 120˚C for different time duration. Using Rockwell hardness testing machine, hardness properties are examined for the composite materials before and after heat treatment. It is observed that Al6061 metal matrix composite experimented under identical heat treatment conditions shows a considerable increase in hardness.

Published by: G. Ramesh, Anerudh Vijayaraghavan, C. Kailash Krishnamoorthy, S. Harish Balaji, T. S. Karthik, Kshitij Swamy

Author: G. Ramesh

Paper ID: V4I5-1383

Paper Status: published

Published: October 15, 2018

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Research Paper

Smart irrigation system using Arduino Uno

The smart irrigation system is an automatic irrigation system which is being widely used in the field of agriculture. Irrigation is practiced in farms where there is a scarcity of water. This smart irrigation system is a farmer-friendly irrigation system ,which is completely automated. This system runs without intervention of humans. This smart irrigation system, using Arduino-Uno, checks the moisture level in the soil. If the moisture level in the soil is low, it automatically sends an alert message and turns on the water motor to flow water to the soil. If the moisture level in the soil is sufficient, it switches off the motor. This system helps in agricultural crop growth and soil maintenance. The smart irrigation system reduces the effect caused by insufficient rainfall. This irrigation system prevents excess of water flowing into the soil which causes a wastage of water, electricity and damage to the soil, effectively.

Published by: Kavya Monisha K., Aishwarya D., Krupaleni K.

Author: Kavya Monisha K.

Paper ID: V4I5-1411

Paper Status: published

Published: October 15, 2018

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Research Paper

Performance analysis and flow features of swirl diffuser in a floor based air conditioning system

In this work, the variation in the temperature of conditioned air and improvement in thermal human comfort by adopting different models of floor swirl diffuser are investigated. The experiment is performed in the workshop lab of Mechanical Engineering Department, LNCT, Bhopal. The aim of this study is to find out the airflow pattern and its distribution through different swirl diffusers installed at the floor in an air-conditioned room. The experiment is based on predicting the nature and behaviour of air diffused by three different types of swirl diffusers having the slot with a draft angle of 10°, 11º and 12º under different operating and flow conditions. An experiment is performed to evaluate the thermal comfort produced in a room equipped with the heat load of 1000 W load capacity with different swirl diffusers and compare their performance graphically. The graphs are plotted between temperatures of diffused air inside the room and vertical height from floor level.

Published by: Mihir Kumar, Deenoo Pawar, Shailendra Dwivedi

Author: Mihir Kumar

Paper ID: V4I5-1416

Paper Status: published

Published: October 15, 2018

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Review Paper

Effect of partial replacement of sand by glass powder and steel powder over the properties of M-30 concrete

Experimental work had been conducted on cement concrete prepared by mixing ordinary Portland cement and modified with different percentages of steel powder and glass powder in partial replacement of fine aggregates. Concrete mixes are modified by 10%, 15% and 20% and 25% of glass powder and steel powder in replacement. For each replacement, several cubes have been cast for determining the compressive strength and workability.

Published by: Achal Jain, Nitin Thakur

Author: Achal Jain

Paper ID: V4I5-1413

Paper Status: published

Published: October 15, 2018

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