Download Details of Short Courses

SHORT COURSES AT COLLEGE OF AERONAUTICAL ENGINEERING
1.
MATERIAL FAILURE ANALYSIS COURSE
Purpose and Background
PEC sponsored short course on Material Failure Analysis is being arranged to create an
understanding on how and why materials fail and factors that contribute to such failures.
It bridges a gap between theoretical concepts and their application in field. Material
Failure Analysis is an important engineering function that can occur due to a variety of
reasons
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Design errors
Improper material
Improper manufacturing process
Unforeseen operating conditions
Improper maintenance
A thorough understanding of Material failures can enable engineers to improve on their
design, manufacturing and maintenance practices. Purpose of this course is to equip
engineers with adequate understanding of this subject so that they can efficiently apply
their engineering knowledge on practical cases they encounter in field / industry. With
the understanding of this subject, engineers can improve their design / manufacturing
and maintenance procedures to provide a better and safer product to their clients.
Learning Objectives & Benefits
This course has been designed to familiarize engineers with modern trends and
techniques available for material failure analysis. In this course, in addition to metals
such as Aluminum and Ferrous alloys, a substantial part has been dedicated for other
advance materials such as polymers and polymer based composites. Advance concepts
such as low and high cycle fatigue, thermal and residual stresses are also introduced.
The last part of the course covers modern material analysis and forensic techniques
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such as metallography and fractography, using modern scientific tools like Scanning
Electron Microscope (SEM).
Course Breakdown
Module
1 (Composites)
Topics
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Composites
Polymers
o Introduction
o Characterization
o Degradation
o Application
2 (Materials and Heat Treatment)
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Micro Structure
Phase Diagrams
Heat Treatment
3 (Material Properties)
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Material properties
Stress-Strain
Failure / Yield Criterions
4 (Fatigue and Creep)
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Fatigue and Creep
Fractography
NDI Techniques
5 (Case Studies)
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Case Study I
Case Study II
Lab visits and demonstration
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2.
FATIGUE AND FRACTURE COURSE
Purpose and Background
PEC sponsored short course on Fatigue and Fracture is being arranged to understand
why materials fail without any prior warning.
Fatigue in engineering components and materials refer to the initiation and development
of cracks in the component, as a result of cyclic loads. There are numerous cases
where a component that has been operating perfectly satisfactorily, suddenly fails
catastrophically due to development and propagation of fatigue cracks. In engineering,
we come across components / structures in which flaws are inevitably present and
which are subject to operational stresses. Fracture mechanics analysis, coupled with
appropriate inspection procedures, provides a rational and quantitative method for
enabling a component to be kept in service safely, at least until a scheduled inspection
or maintenance outage, when repair can be affected, with minimal loss of production.
Fracture mechanics is not only a powerful tool for rational evaluation of NDT flaw
indications, but is also invaluable in design, materials selection and failure analysis.
Purpose of this course is to build an understanding of this subject among engineers so
that they can develop a systems and checks whereby the structural integrity of
engineering systems can be assessed for their fitness.
Learning Objectives & Benefits
This course has been designed to familiarize engineering with fracture of engineering
materials with special focus on fracture under fatigue loading. Theory of fracture
mechanics covering stress concentration, modes of fracture, basic stress analysis, low
cycle/high cycle fatigue and creep have been covered. Besides this topics like Aeroelasticity have also been touched upon. A significant portion of this course also involved
experimental work involving UTM, bending fatigue testing and metallography.
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Course Breakdown
Module
Topics
1 (Materials and Heat Treatment)
Micro Structure
Phase Diagrams
Heat Treatment
2 (Fracture Mechanics)
Fatigue and Creep
Failure / Yield Criterions
Aero Elasticity
Fracture Mechanics
3
(Failure
Prevention
Techniques)
Prediction
and Basic Stress Analysis
Stress-Strain Curves
Elements of Machine Design
Philosophy of A/C Design
NDI Techniques
5 (Fractography / Metallography)
Specimen preparation / etching
Optical microscopy
Introduction to SEM
5 (Case Studies)
Case Study I
Case Study II
Lab visits and demonstration
4
3.
STRUCTURAL HEALTH MONITORING (SHM)
Purpose and Background
PEC sponsored short course on Structural Health Monitoring (SHM) is being conducted
to familiarize engineers with latest trends in Non Destructive Evaluation (NDE) methods
for monitoring and ensuring structural integrity. It has extensive application in
aerospace, mechanical and civil engineering. SHM is a system with the ability to detect
and interpret adverse “changes” in a structure in order to improve reliability and reduce
life cycle costs.
In SHM, structures are continuously monitored during their use by embedded or
attached Non Destructive Evaluation sensors. SHM is being used extensively in
structural integrity and structural life enhancement programs in aviation industry.
For aircraft applications, the use of SHM technologies for future aircraft will not only
enable new possibilities for maintenance concepts but will have a significant influence
on design concepts and assembling technologies. SHM is expected to be one of the key
technologies for controlling the structural integrity of future aircraft, providing both
maintenance and weight saving benefits. Some of the advantages over conventional
NDE inspection include reduced inspection down time, elimination of component tear
down, and potential prevention of failure during operation. SHM is likely to be used in
identifying failures in aircraft, which would also be a boon to the commercial aircraft
industry.
Learning Objectives & Benefits
This course has been designed to familiarize engineering officers with modern trends
and techniques available for structural health monitoring of aerospace structures. The
importance of this course for PAF can be appreciated from the fact that one of the major
problems faced by PAF is life cycle prediction and management of aged fleet. The main
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contents of this course included theory of structural analysis covering aircraft loading,
low cycle/high cycle fatigue and modern computational techniques. Besides this
advanced areas like use of sensors to monitor structural failures have also covered in
this course.
Course Breakdown
Module
Topics
Introduction to SHM
Aircraft Loads
SHM Techniques / Sensors
2 (Design & Formulation of SHM Philosophy of A/C design
Damage Tolerance Analysis
Techniques)
Modern Computational Techniques
3 (Aircraft Structure)
Aircraft Structural Analysis – I
Aircraft Structural Analysis – II
Aero elasticity
4 (Statistical Analysis Techniques)
QMS – Principals, Tools and Techniques
Statistical Analysis for Aircraft Structures
5 (Case Studies)
Case Study I
Case Study II
Lab visits and demonstration
1 (SHM Familiarization)
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4.
ADVANCE DESIGN METHODS
Purpose and Background
PEC sponsored short course on Advance Design Methods is being planned to
familiarize engineers with modern design methods. Due to advancement in technology
and computational / simulation methods, the design process in general and aircraft
design in particular have gone though a paradigm shift over the last two decades. The
focus has now shifted to provide maximum freedom to the designer in later stages of
design, rather than freezing a specific configuration in the earlier part of design.
Learning Objectives & Benefits
This course has been designed to familiarize engineers design process. It includes the
exploration of requirements space, concept space and technology space. The design
space exploration involves utilization of tools used by system engineers like design
experiments, statistical regression and Monte Carlo simulations. The main emphasis is
to drive the design so as to minimize uncertainty by robust design methods and
probabilistic design methods. The course encompasses all these new technique and
help engineers utilize these simple techniques in their routine design and analysis
problems. The topics includes
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Quality Function Deployment
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Morphological Matrix
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Modeling and simulation environment
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Mission sizing and Synthesis
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Life cycle cost estimation
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Integrated Product and Process development
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Statistical DoE and Multivariable regression
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Probabilistic design methods
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Design software and Integration environments
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Multidisciplinary design optimization
Course Breakdown
Topics
Conventional Aircraft Design Process and Paradigm Shift
Basic Flows and Analytical Approaches
Design Space Exploration, Requirements, Concept and
Technology Space
Numerical Computational Techniques
Probabilistic Design Methods
Multidisciplinary Design Optimization
Experimental Analysis Techniques and Lab Visit
Case Studies
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5.
AERO ENGINE PERFORMANCE COURSE
Purpose and Background
PEC sponsored short course on Aero Engine Performance is being arranged for
engineers to educated them on performance parameters and performance analysis of
Aero Engines.
Turbines revolutionized airplane propulsion in the 1940s, and through today have been
a popular choice for shaft power delivery all over the world. Aero-engine performance
deals with the thrust power delivery while ensuring stable and safe operation throughout
the operational envelop. Aero-engines are mainly the gas turbine engines and gas
turbine engines are also used to deliver shaft power. Thrust or shaft power is the key
parameter in which every buyer and seller is interested. This course provides an equal
opportunity for engineers working with air and land based gas turbines to understand
the basic performance parameters such as:
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Net thrust or power output
Specific thrust or power
Specific fuel consumption
Propulsive or thermal efficiency
Learning Objectives & Benefits
For performance analysis much attention is now being given to Computational Fluid
Dynamics (CFD) however, the fundamentals do not change and this course is
concerned with the basics of the subject as well as looking at new ideas.
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Course Breakdown
Topics
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Thermodynamics
Heat Energy and Power
Brayton and Jet Engine Cycles
Engine Controls
Engine Performance Parameters
Effects of Intake and Nozzle on
Engine Performance
Turbo-Machinery
Engine Maintenance
Engine Indications & Instrumentation
Engine Defects
Engine Acoustic and CFD
Design Optimization
Lab Visit
Gas Turbine Software
Computer Simulations
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6.
Radar Signal Processing
Purpose and Background
Radar systems find numerous applications in both civil and military fields. Civil
applications include traffic police radars, air traffic control, weather radars, speed
measurement in sports, collision avoidance, and crop cultivation. Military applications
include surveillance, tracking, fire control, and imaging. Modern airborne and groundbased radars employ numerous advance digital signal processing algorithms. These
DSP algorithms have greatly improved the performance, operational speed, accuracy,
and flexibility of radar systems.
This short course familiarizes students with modeling and simulation of many advance
radar DSP algorithms which are at the heart of any modern radar processor. The
MATLAB simulations and algorithms include the radar waveform design; pulse
compression technique and associated matched filtering; Moving Target Indicator (MTI)
filter design and processing; Pulse-Doppler processing; design of hamming windows to
control side lobes and range-Doppler coupling; Constant False Alarm Rate (CFAR)
algorithms; and automated detection. The course will introduce design and processing
in temporal, spatial, and frequency domains.
Learning Objectives & Benefits
The course is designed to provide a detailed coverage of modern radar DSP
fundamentals and applications. It will help engineers to fill the gap between radar
system theory and advanced signal processing concepts. The skills acquired in this
course will serve as a basis for further advance research in the area of radar
modification and development. Specifically, the course will emphasize on:
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Radar signal acquisition and sampling in multiple domains
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Target statistics and fluctuating models
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Noise, and interference models
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Design of radar waveforms and pulse compression technique
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MTI and Pulse Doppler processing
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Clutter and interference reduction techniques
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Detection tools and CFAR processing
Course Breakdown:
Module
Topic
Duration
1
Radar Basics, Block Diagram, 01 Day
and Subsystems
(08 hours)
2
Target, Noise, and Interference 01 Day
Models; Data Acquisition and
(08 hours)
Sampling in Multiple Domains
3
Matched Filtering and Pulse 01 Day
Compression; MTI Filtering
(08 hours)
4
Pulse Doppler Processing
01 Day
(08 hours)
5
Radar
Detection;
Processing
CFAR 01 Day
(08 hours)
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7.
Advanced Computing Architectures
Purpose and Background
The field of computing is one of the most rapidly changing areas of technology. In
general the move has been towards parallel computing. While certain architectures like
FPGAs and DSPs have matured into mainstream platforms, new architectures have
emerged which have democratized parallel processing application development. In this
regard, general purpose graphics hardware (GPUs) is the leading solution that has
gained popularity over the last five years. These computing architectures find practical
applications in almost every field of technology, some of which are listed below:
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Signal Processing
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Image Processing
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Electromagnetic Simulations (Radar & Antenna)
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CFD Simulations
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Cloud computing
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Databases & Information Systems
The main theme of this course runs along presenting an introduction to these emerging
architectures and their applications to high performance computing challenges both in
embedded and non-embedded engineering systems
Learning Objectives & Benefits
The basic idea of conducting this course is to familiarize the participants with
mainstream and emerging computing architectures including FPGAs, DSPs and GPUs.
Using the knowledge acquired during this course in conjunction with the applied
examples and hands-on work with respective development toolkits the participants
would develop a strong basis for future work.
The chief objectives of this course can be listed as:
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To introduce modern computing architectures in embedded and non-embedded
engineering systems
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To provide examples of applications of these devices for high performance and
real time computing in different domains.
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To get hands on experience with respective development pipelines.
Course Breakdown:
Day
1
2
3
Topic
No. of Lectures
Introduction of FPGA architecture
2
Overview of FPGA applications and design
case studies
2
Hands-on work with an FPGA development
kit
4
Introduction of DSP architecture
2
Overview of DSP applications and design
case studies
2
Hands-on work with a DSP development kit
4
Introduction of GPU architecture
2
Overview of GPU applications and design
case studies
2
Hands-on work with
platform
4
a GPU development
Total
24
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8.
Condition-Based Maintenance Course
Purpose and Background
In the recent past, the maintenance concepts have undergone a paradigm shift. Instead
of replacing the components/systems when they fail or in case of exhaustion of the OEM
specified life, these are replaced based on their actual condition as assessed using the
sensor data. This concept has resulted in the emergence of the field of condition-based
maintenance (CBM) and more recently, that of prognostics and health management
(PHM). These fields are confluence of many disciplines of sciences and engineering that
include:
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Systems theory
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Physics-of-failure (POF) study
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Data mining
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Pattern recognition/classification
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Statistical learning methods such as artificial neural networks (ANNs) and
support vector machines (SVMs)
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Signal processing methods.
The main theme of this course runs along presenting an introduction to these fields and
their roles in developing fault diagnostics and failure prognostics algorithms in
engineering systems.
Learning Objectives & Benefits
The basic idea of conducting this course is to familiarize the participants with the field of
CBM/PHM using a blend of theoretical concepts and practical results. At the conclusion
of the course, the expected outcome is that participants will get a basic understanding of
the various modules that form the foundation of CBM/ PHM. Using the knowledge
acquired during this course in conjunction with the system specific domain-expert
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knowledge, they will be able to get practical benefits from this course
The chief objectives of this course can be listed as:
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To develop a familiarization of the terminology used in the field of CBM/PHM
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To review the theoretical basis of various field that lays the foundation of
CBM/PHM
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To understand various steps needed to develop a generic CBM system
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To review test cases from different types of application domains
Course Breakdown:
Session
Topic
No. of Lectures
1
Background, History, Terminology used in 4
the field of CBM/PHM
2
Systems Theory
3
Physics of Failure Mechanism in Different 3
Types of Systems
4
Pattern Recognition/ Classification Methods
4
5
Statistical Learning Methods
5
6
Signal Processing Techniques
3
7
Case Studies
6
2
Problem Solving Classes
3
Total
30
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9.
Communication Networks
Purpose and Background
PEC sponsored short course on Communication Networks is being organized to teach
the students about the basic concepts of communication networks with an overview of
how the modern communication networks are moving towards the convergence of
voice, video and data.
This course aims at providing an overview of the modern communication networks. A
mix of fundamental concepts and recent technologies helps the students to learn
modern Digital Communication, Networking technologies, Cellular communication,
Networks & Communication Security and latest technological trends. Participants will
also get an opportunity to visit the college academic network, formally known as CAN.
This visit will help in enhancing the understanding developed during the course. A
working model of a Voice over IP (VoIP) system will also help the students to
understand the advantages of VoIP over traditional telephony.
Learning Objectives & Benefits
The desired learning objectives include the following:
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Familiarization with the basic concepts of Digital Communication.
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Understanding of working principles behind data communication networks
including TCP/IP protocol suite, Internetworking operations, wide area networks,
local area networks and wireless LANs.
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To develop detailed understanding of Voice over IP systems.
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To have an in-depth knowledge of Communication security with a focus on
Network Security working principles.
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To have an understanding how the actual data communication networks and
VoIP systems function by the practical demonstrations and visits.
Course Breakdown:
Module
Topic
Duration
01 Day
1
Digital Communication
(08 hours)
01 Day
2
Wireless Communication
(08 hours)
3
Data
Networks
Communication 01 Day
(08 hours)
4
Communication / Network 01 Day
Security Voice over IP
(08 hours)
5
Latest
trends
in 01 Day
Communication Networks
(08 hours)
Total
05
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10.
MATLAB Applications in Engineering Course
Purpose and Background
MATLAB is a modern numerical computing environment and fourth-generation
programming language. It is one of the most popular numerical computing tools used for
research and development in engineering disciplines, both in the academia and
industry.
This short course familiarizes students with algorithm development, data visualization /
analysis, and numerical computation methods. Each of the 4 modules in the course
independently addresses a specific engineering domain, including communication
systems, automatic control systems, digital signal processing and image processing
techniques. The course aims to enhance the participant’s capabilities for mathematical
manipulations with matrices, understanding and teaching basic mathematical and
engineering concepts, and even for studying and simulating a variety of physical
systems in general. Course provides skills in diagnosing and analyzing problems in
various industry processes. It provides a basic perception of efficient use of MATLAB
toolboxes and creates an awareness of the software based problem-solving techniques
currently in use.
Learning Objectives & Benefits
The course is designed to promote solving of technical computing problems in an
efficient manner, using a high level programming language. It will help to diagnose
computing problems of engineering industry, suggest remedial techniques and create
awareness among engineers from government agencies, development organizations
and academia. Specifically, the course will emphasize on the following objectives:
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To identify the strengths and potential of MATLAB against traditional
programming languages
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To develop understanding of algorithm development, data visualization /
analysis, and numerical computation methods
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To model physical systems mathematically, and apply a software based problemsolving technique
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To understand the efficient use of various toolboxes in MATLAB
Course Breakdown
Module
Topic
Duration
1
MATLAB Applications in Communication 01 Day
Systems
(08 hours)
2
MATLAB Applications in Control Systems 01 Day
Engineering
(08 hours)
3
MATLAB Applications in Digital Signal 01 Day
Processing
(08 hours)
4
MATLAB
Applications
Processing Techniques
in
Image 01 Day
(08 hours)
01 Day
5
MATLAB Applications in Neural Networks
(08 hours)
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11.
Project Management Workshop
Purpose and Background
PEC sponsored 01 week workshop on Project Management at CAE is being organized
to address the basic concepts of project management with practical hands on training
on Microsoft Project Management Software.
Project is (usually) a one off set of
interrelated activities or tasks which ends with a specific goal or target being reached.
Common characteristics of a project include:
•
A set of non routine tasks to be performed in a certain sequence.
•
It is goal orientated with measurable achievements in mind.
•
There will be various constraints to work within. These may be financial,
resource, legal, ethical, environmental, quality and/or time based. For example,
there will be a limited set of resources with which to perform the tasks. Some of
these resources may be shared with other concurrent projects.
•
It will involve people: their management, motivation, knowledge and
expertise.
This workshop familiarizes the managers, consultants, and academia in defining,
planning, scheduling and controlling of the tasks which must be completed to achieve
their goal(s).
Defining and planning help you work out what has to be done and by whom. Scheduling
means you know when you have to do it and controlling is necessary because some
things will not turn out as planned!
Learning Objectives & Benefits
The workshop is designed to give a basic knowledge of project management along with
hands on learning on Microsoft Project Management software.
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To enable the participants with step by step gradual learning processes through
a fine blend of theory and practical exercises.
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To impart the basic ingredients of project management in terms of project plan
and critical task handling.
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To equip the participants to adopt a better decision making approach.
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To enable the participants how to allocate resources like people, equipment,
resources and their cost rates in completing the projects within their cost and
time constraints.
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To understand widely-used quality analysis tools like custom Gantts, CPM and
PERT etc.
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To help the participants to manage and crash their resources within their own
customised calendar.
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To enable the participants in tracking / monitoring of projects and to help them in
setting up a baseline of projects.
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To enable the participants in adding filters, report generation, and handling the
uncertainty issues in the projects.
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To develop the logical thinking in participants in handling multiple projects and
make use of techniques for sharing the larger resources pools at the company
level.
Course Breakdown
S No
No. of
Lectures
Topics
1
The workshop is designed to:
understand the basics concepts of 2
project management
2
To understand "widely-used" quality
analysis tools and techniques and 1
exercise
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3
How to start the project management
plan. And how to add resources in the 2
project management and exercise
4
How to manage
and crash these
resources and how to set resources 2
rates and calendar
5
Setting baseline of projects, Tracking /
monitoring of projects, and how to 2
handle multiple projects and exercise
6
Sharing of resources pools and how to
2
add filter and report generation issues
7
Handling the uncertainty issues in
projects, Quality issues, reviews and 1
logs
8
Exercises
2
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SHORT COURSES OF ONE DAY DURATION
Furthermore there are 1 day duration courses that are conducted at College of
Aeronautical engineering. Below is the name along with course breakdown of such
courses
1.
Basic LabVIEW course
Course Breakdown:
Module
Topic
No. of
Lectures*
Introduction to the LabVIEW GUI
and basic features of the software
1
2
Building a simple Virtual Instrument
(VI) from a Template
1
3
Creating a subVI
1
4
Charts and file I/O functions
1
5
Working with loops and arrays
1
1
2.
Training Need Analysis
Course Breakdown
Module
Topic
No. of
Lectures*
1
Training and the organization
1
2
Linking training with
organizational strategy
1
3
Training needs assessment
1
Types of training needs analysis
1
Key approaches to training needs
analysis
1
4
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3.
Material Testing
Course Breakdown
Module
Topic
No. of
Lectures*
1
Static Testing
1
2
Impact Testing
1
3
Creep
1
Torsion
1
Fatigue Testing
1
4
4.
FEM Modeling
Course Breakdown
Module
Topic
No. of
Lectures*
1
Introduction to FEM
1
2
Introduction to Structural
Analysis
1
3
Basics of modeling
1
4
Sample problems
1
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5.
CAD
Course Breakdown
Module
Topic
No. of
Lectures*
1
Introduction to Engineering
Drawing
1
2
Overview of CAD
1
3
Modeling Techniques
1
2D & 3D Modeling
1
Drawing Production
1
4
6.
Corrosion Control
Course Breakdown
Module
Topic
No. of
Lectures*
1
Introduction to Corrosion
1
2
Types of Corrosion
1
3
Corrosion Detection
1
Corrosion Presentation
1
Properties of A/C Paints
1
4
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7.
Mathematics of Applied Fuzzy Sets
Course Breakdown:
Module
Topic
No. of
Lectures*
1
Fundamental Notion of a
Fuzzy Set and Vagueness
2
2
Operations on Fuzzy Sets and
mappings
1
3
Fuzzy numbers and
arithmatics
2
Implementation of Fuzzy Sets
in Computer Algebra Systems
1
Applications of fuzzy sets
2
4
8.
Knowledge Based Fuzzy Logic Controllers
Course Breakdown
Module
Topic
No. of
Lectures
1
Fundamental Notion of a Fuzzy Set
and Vaguness, Linguistic variables
3
Fuzzy rules and knowledge base
1
2
Fuzzy inference, Mamdani vs
Sugeno Inference
1
3
MATLB’s Fuzzy Logic Toolbox
3
4
Practical development of the system
2
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9.
Applied Statistics Using SPSS
Course Breakdown
Module
1
2
3
4
Topic
No. of
Lectures
Introduction to statistical packages
and SPSS
1
Types of variables, Type I & II
errors, Significance
1
Descriptive statistics and its
interpretation
1
Comparing Means: the problem and
facets, One, Independent and
Paired samples tests
2
ANOVA Procedure and calculations
1
One way, Two way, Planned/Unplanned
2
Concept of Chi-square test of
independence, Calculations in
SPSS
1
Contingency Tables
1
Correlation Coefficient,
Bivariate/Partial Correlation
1
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10.
Introduction to MATLAB usage and programming
Course Breakdown
Module
1
2
3
4
11.
Topic
No. of
Lectures
Symbolic and Numeric
Processors
1
Basic data structure of
MATLAB and array
addressing
1
User-defined functions, ifelse-enif, for end, while-end
2
Polynomial manipulations,
plotting
1
Maxima, minima of a function,
Solution of ODE, Ploting of
ODE
2
Laplace and z-transforms in
MATLAB
1
Introduction to Simulink
1
Computer algebra system: Maple
Course Breakdown
Module
1
2
3
Topic
No. of
Lectures
Symbolic vs. Numeric
processing : an overview
1
Evaluations, expressions,
statements in Maple
1
Data structures
1
Maple procedure writing - I
2
Plotting in Maple
1
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4
12.
Matrix and Vector Computation
1
Maple procedure writing – II
2
Mechanical Design using Simulink
Course Breakdown:
Lectures
Topics
1
Mechanical design; emphasized aspects during
this course/workshop
2
Introduction to Matlab, Simulink, Simscape,
Simmechanics ets
3
Theory of vibrations for some common type
structures
4
Modeling and simulations of various types of
vibrating structure
5
Role of the models in determining and optimized
design of structure for various criteria
6
Essentials of thought and procedure in
mechanical design
7
Some practical design advice
Fee : For fee, please contact college
Venue of the Short Courses: College of Aeronautical Engineering, PAF Academy,
Risalpur
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