Message from The dean
I am gratified to see that this year too the “Gauge” is published in time for the Career Fair 2018 event. Over
the years the “Gauge” led by a team of Engineering Students’ of the Publication Society has rendered an
invaluable service to the faculty publishing a diverse collection of articles including important news of the
Faculty. This edition has an interesting interview with one of our brilliant, academics from the department of
Mechanical Engineering.
This is an opportunity as well as a productive technical material and subsidiary skill developing tool for the
students. At a stage where the Faculty is on the path of improving its visibility in the industry and in the
society through promotion of student activities and research, the Gauge magazine does a vital role in helping
with this good cause.
I wish the Gauge team and the Publication Society of the Faculty great success in all their future activities. I
also congratulate the coordination and efforts behind the team for bringing this issue in time for the Career
Fair 2018. I wish them all success.
PROF. G.B.B. Herath,
Dean, Faculty of Engineering,
University of Peradeniya.
ACKNOWLEDGEMENT
•Prof. Upul B. Dissanayake, Vice Chancellor of University of Peradeniya for his support and encouragement.
•Prof. G.B.B. Herath, Dean, Faculty of Engineering and the patron of Engineering Students’ Publication
Society (ESPS) for his advice and support.
•Dr. Manjula Sandirigama, Senior Treasurer and staff advisor of ESPS for his commitment and support
throughout this venture.
•All the academic and non-academic staff members of the Faculty of Engineering.
•All the undergraduates who supported this venture in numerous ways.
COVER STORY
Electrical Impedance Tomography is a method which is used to measure the boundary conditions of a unit
and reconstruct an image inside that boundary. Any closed system in a conductive medium can be imaged
using this method. The current is fed into the system throughout the boundary and the current-voltage
measurements which are taken by 16 electrodes are used to reconstruct the image. The Cover photograph
of the magazine is a switching matrix which is used to switch the current and voltage measurements from
one electrode to another.
The major advantage is that the use of radiation to image humans can be replaced with this method. This
uses a small amount of electricity which is sent to the human body. Unlike radiation which has a long-
lasting effect on humans, electrical impedance tomography won’t have a lasting effect on human as the
current in use can be limited to a very low level.
This method is already used in geography to take images underground. As of now, this is not widely used
in medicine because of the threshold which a human can withstand in terms of current is not define. This
area is currently under research.
This project was done by Chanaka Hettige, Akila Hemal and Thilanka Pathum Weerasekara and they were
able to secure the W.P Jayasekara Prize for the Best Student Project in Electircal and Electronic Engineering
in General Convocation of University of Peradeniya 2017.
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University of Peradeniya GAUGE Magazine