Central Instrumentation Centre

Central Instrumentation Centre (CIC) facility, at AITAM, has been created with an objective of

providing a central facility of latest and advanced instruments to the faculty and students of all the

departments of the institute. It houses highly sophisticated instrumentation equipment. Also the centre

provides service to troubleshoot and maintenance of Electrical and Electronic Instruments like,

ammeters, voltmeters, CROs, RPS, etc., This centre is established and maintained by the department

of Electronics and communication Engineering.

OBJECTIVES:

To acquire and develop capability for preventive maintenance and repair of Electrical and

Electronic Instruments.

To provide facilities of instrumentation equipment to students and faculty.

To train technicians for maintenance and operation of instruments.

FACILITY AVAILABLE:

1. RTD

2. LVDT

3. CAPACITIVE TRANSDUCER

4. STROBOSCOPE

5. BOURDON TUBE

RTD Principle and working:

RTD is abbreviated as Resistance Temperature Detector. All conductors have a positive

temperature coefficient of resistance (PTCR) .This type of transducer is used for temperature

measurement. The basic concept used is that electrical resistance of metal changes in accordance with

the temperature. Principle used is that the resistance of a conductor changes in proportion with the

change in temperature.

The unknown temperature is determined in terms of electrical resistance of the conductor, which

senses the temperature. The change in resistance of this device is precisely determined by resistive

bridge circuit or by ohmmeter.

LVDT

LVDT stands for linear variable differential transformer. It works on the principle of mutual induction

LVDT. It consists of one primary coil and two secondary coils, wounded on a non-magnetic form and

Ferro-magnetic core is placed between primary and secondary coils through form as shown in figure.

Working diagram:

CAPACITIVE TRANSDUCER

The principle of operation of capacitive transducers is based upon the familiar capacitance equation of

parallel plate capacitor

d

AC

Farads

where C = capacitance

A = area of each plate

D = Distance between the plates

= Permittivity constant

The capacitance transducer consists of two half circular parallel plates, one is fixed and other is

movable on a common shaft, as shown in fig. Angular displacement to be measured is applied to the

moving plate. This angular displacement, changes the effective area between the plates, causing

changes in the capacitance. This change is linear because change in area and hence capacitance is

directly proportional to angular displacement.

STROBOSCOPE

A stroboscope is an instrument that emits a series of brief, intense flashing lights at specific intervals.

Principle and working

. When the flashing light from a stroboscope is directed the rotating disk which is connected to

the shaft whose speed to be measured. The stroboscope makes, the disk rotating at high speed appear to

stand still due to the visual persistence of the human eye and the mark on it.

When the frequency of the flashing lights from the stroboscope is adjusted to synchronize with the disk

rotating speed, the number of apparently stationary mark you see corresponds to the actual number of

marks.

BOURDON TUBE

Most pressure measuring devices use elastic members for sensing pressure at the primary stage. These

elastic members are of many types and convert pressure into mechanical displacement which is after

converted into an electrical form. These devices are many a time known as “force summing devices”.

The principle of working of these devices is; the fluid whose pressure is to be measured is made to press

the pressure sensitive element and since the element is an elastic member, it deflects causing a

mechanical displacement. The displacement is proportional to the pressure applied. The displacement is

then measured with help of electrical transducers. The output of electrical transducers is proportional to

displacement and hence to the applied input pressure.

The commonly used pressure sensitive device is Bourdon tubes. The bourdon tubes are

designed in various forms. These are:

C type

Spiral

Twisted

Helical.

The Bourdon tubes are made out of an elliptically flattered tube bent in such a way as to

produce the above mentioned shapes. One end of the tube is seated or closed. The other end is open for

the fluid to enter. When the fluid, whose pressure is to be measured enters the tube, the tube tends to

straighten out on account of the pressure applied. This causes a movement of the free end and the

displacement of this end is amplified through mechanical linkages. The amplified displacement of free

end may be used to move a pointer on a scale calibrated in terms of pressure or may be applied to a

electrical displacement transducer whose output may be called in terms of the pressure applied.

The C type Bourdon element is most commonly used for local indication but it is also used for

pressure transmission & control applications. The tube which is oval in section is formed into an arc of

2500 and hence the name C for the configurations, which is as shown in the fig.

The displacement of tip is:

Δa=0.05

333.02.0

t

x

y

x

p

r

E

ap

Where E is the modulus of elasticity:N/m2

P is the applied pressure:N/m2

Thus relationship between the displacement of tip and the applied pressure is non linear i.e

each pressure increment doesn’t produce a corresponding tip movement .However, a linear relationship

between the deflection of the pointer and the applied pressure is obtained using the geared sector and

pinion movement or other mechanical means .The accuracy of C type Bourdon tubes varies from ±0.5%

to ±2% or poorer. However the normal accuracy is about ±1%.

Central Fabrication Facility

Central Fabrication Unit at Aditya institute of Technology and

Management is an educational platform where science is translated into

technology. The Institute provides extensive student support via centralized

fabrication unit in addition to the departmental laboratories.

The Central fabrication unit consists of various facilities/shops with Well-

equipped latest tools, equipments and machineries to support the students to

fabricate their experimental set-up with the required quality and quantity within

stipulated time. Further, the unit supports all branches of student’s research,

academic projects, minor and major projects of B.Tech, M.Tech and Ph.D and

supporting the college in infra structure fabrication works. Fabrication works

pertaining to sponsored research and consultancy are also done at this unit.

Various facilities are also existing for the manufacture of components, parts and

repair and servicing works.

At central fabrication unit students have the access to the following facilities:

1. Carpentry Shop

2. Fitting Shop

3. Tin Smithy Shop

4. Forging Shop

5. Foundry Shop

6. Welding Shop

7. Machine Shop

8. Metrology Section

CENTRAL FABRICATION UNIT

CENTRAL FABRICATION UNIT STAFF

Carpentry Shop

Carpentry shop provides the facility for woodworking, woodcutting, shaping,

patterns and repairs of wooden structures, shelvs etc. Students work with wood

for various applications. Further, the students have the access to design different

types of wooden patterns and joints.

Fitting Shop

The fitting shop is related to assembly of parts, bringing the dimension or shape

to the required size or form, in order to secure the necessary fit. Students identify

and select various tools for holding, assembling or dismantling the work piece

and carry out basic work bench activities such as marking, sawing, filing, drilling

and fitting to ensure work pieces fitting. Further, students can produce a product

through the given technical drawing by using appropriate engineering tools and

equipments in fitting shop.

Tin Smithy Shop

Tin smithy shop supports the students to prepare their minor and major projects

involving sheet metal bending, trimming, shaping the sheets to their desired

shapes related to engineering articles. Common examples of sheet metal works

done by the students at sheet metal shop are hoppers, canisters, guards, covers,

pipes, hoods, funnels, bends, boxes etc.

Forging Shop

Forging shop provides the facility for shaping of metal in cold and hot

working stages. Structures made of mild steel are fabricated at this facility.

Students develop the steels structures for their automotive designs. Utilize hand

forging for relatively small components, Machine forging for medium sized and

drop forging for large components.

Foundry Shop

Students use foundry shop to produce their own metal castings. Required

patterns are prepared in the carpentry shop using timber wood and then brought

to the foundry. Metals/wax materials are cast into shapes by melting them into a

liquid, pouring the metal/wax in a mold, and removing the mold material or

casting. The most common materials processed in the foundry shop are

Aluminium and wax in few cases.

Welding Shop

Welding is an important fabrication and sculptural technique, possessing

both practical and artistic capabilities. The Welding shop provides students to

construct and/or repair metal structures and equipment using welding fabrication

procedures, including those associated with SMAW, GMAW, GTAW, fuel-

oxygen. The facility is equipped with advanced welding machines and cutting

processes. Students are acquiring skills during welding processes. The students

learn further, industrial safety measures.

Machine Shop

The Machine shop is dedicated to taking the theoretical knowledge learned in a

classroom environment and applying it to real world tactile solutions. Machine

Shop provides engineering students with a well-equipped, safe working

environment in which the students can design and manufacture their projects

using various machine tools and cutting tools. The shop contains a spectrum of

equipment and technology ranging from simple hand tools to advanced machine

tools including CNC Lathe. The facility has become an unmatched resource,

accessible to students and staff across multiple disciplines and departments.

Metrology section

Students once they fabricate their models/projects, they use the metrology

instruments to check the internal and external dimensions of the models. The

metrology section is having advanced computerized instruments. Students

identify and use reference materials to ensure good quality, accurate, traceable

measurement and dimensional accuracy for accurate results as per Indian

standards.

For any fabrication works contact:

Dr.C.J.Rao Central Fabrication Unit, Mobile: 9440416577 Email: hod.mech@adityatekkali.edu.in

Photo Gallery of Central Fabrication Unit

Carpentry Shop

Fitting Shop

Tin Smithy Shop

Forging Shop

Foundry Shop

Welding Shop

Machine Shop

Metrology Section

Media laboratory/Business Lab/Studios Media Laboratory

Media laboratory was started in August 2011 for research and development, also providing

media services to the Aditya Institute of Technology and Management (AITAM), Tekkali,

Srikakulam district. It operates in creating innovative scenarios for teaching, learning and

research as well as their implementation at AITAM.

The main objective of this club is to bring out the hidden talent in students related to

photography, movie making and other such activities. Cultural activities have always been an

integral part of all the fests in our college. The main agenda of our clubs is to bring all such

interested candidates under one roof and give them a platform so that they can showcase their

talent and passion. The club is taking its steps to assemble all the passionate students that we will

deliver good directors, artists, dancers and singers from this laboratory.

Activities in Media Lab:

The Media Lab encourages and supports faculty members and students in the following

activities:

Utilizing media and educational technologies in teaching(eg: e-learning, media-aided

project learning)

Contemporary distribution and enrichment of teaching and research materials (e.g:

streaming media lectures and presentations)

Conducting workshop and train the students in designing, editing, photography and

music.

Encourage students doing in short films related to public issues and awareness on social

events

Organizing cultural fest where the student can show their talents of their interest.

Motivating the students to participate national and district cultural fests and youth

festivals.

Facilities and equipment in Lab:

2 X PC workstation for audio/video processing

I5 processor with 1TB hard disk, 1GB RAM

SONY video hand cam-1

DSLR Nikon D750- semi professional camera with wide lenses

Strangers 120pm speakers X 2

Studio master speaker -1

AHUJA amplifier 7000 – 1

SIMPEX 23 plain Strobe lights kit

AHUJA SRX 500 speakers X 2

Keyboard – CASIO

Acoustic and electrical Guitars

SHURE microphones with cable X 4

CARLSBRO electronic drum kit -1

One photopro Tripod and SEGATE 2TB hard disk

SIMPEX Manual Flash

ACTIVITY IMAGES:

MEDIA LAB AND OTHER FACILTIES

Research/Statistical Databases

RESEARCH DATABASE The Central library has been established with state-of-the-art infrastructure to the International

Standards with Reference and textbooks of national and international authors, International and

national Journals & Non-book materials are available to cater to various fields. Also we have

established a digital platform AITAM DIGITAL LIBRARY to share the text, video, and audio

materials to students and faculties and support them in their self-learning process.

Our Digital Library includes RESEARCH DATABASE that contains full-text articles or

citations to articles published in academic journals, magazines and newspapers, e-books

consisting of text, images or both readable on computers and other electronic devices

Digital Library

Statistics Database The Digital Library provides access to a number of databases where statistics on a range of

subjects can be found. Statistical databases give important information that supports

scholars/researchers/ and students in their coursework, research, and project respectively.

Particulars of subscription given below.

IEEE SUBSCRIPTION

ASME SUBSCRIPTION

ASCE SUBSCRIPTION

N.LIST SUBSCRIPTION

DELNET (DEVELOPING LIBRARY NETWORK) SUBSCRIPTION

J.GATE SOCIAL AND MANAGEMENT, ENGINEERING AND TECHNOLOGY

SUBSCRIPTION

NPTEL LAN THROUGH COLLEGE SERVER

NATIONAL DIGITAL LIBRARY OF INDIA INSTITUTION SUBSCRIPTION

JOURNALS ONLINE SUBSCRIPTION

INAGARATION OF TECHNICAL BOOK FAIR

ORGANIZED TECHNICAL BOOK FAIR FOR RESEARCHERS