Portfolio showing a description of my skills, work experience, and projects.

1. Engineering Portfolio
Shriram Vasudevan
B.E. Mechanical Engineering, University Visvesvaraya College of Engineering, Bengaluru
M.S. Mechanical Engineering, University of Illinois at Chicago
1

2. Table of Contents
Page 3: Professional Experience – Clip-On – TTK Prestige Limited
Page 4: Professional Experience – Farberware – TTK Prestige Limited
Page 5: Professional Experience – One-touch – TTK Prestige Limited
Page 6: Professional Experience – Microchef – TTK Prestige Limited
Page 7: Implementation of Kaizen for cooker production
Page 8: Methodology and process flow chart for pressure cookers
Page 9: Master’s project – Digital implementation of PID controller
Page 10: Master’s project – Closed-loop DC motor control
Page 11: Master’s project – CAD and FEA of a bike trailer
Page 12: Master’s project – FEA of a steel bracket
Page 13: Internship – Analysis for FluidMesh – PCTEL
Page 14: Internship – Analysis of antenna mount bracket – PCTEL
Page 15: Internship – Thermal Analysis of a coaxial cable – PCTEL
Page 16: Internship – Static Analysis of antenna ground plane – PCTEL
2

3. Clip-On Stainless steel and Hard-Anodized cookers
TTK Prestige Limited
The Clip-on pressure cooker is designed for maximum safety. It comes with 4
safety devices - the Weight or Whistle, pressure indicator, gasket release system
and the safety valve.
It has an extra thick Alpha base made of steel aluminum steel sandwich base, it
covers entire pressure cooker bottom which facilitates faster cooking and hence
minimizes gas usage.
• Developed the product design on SolidWorks, manufactured, tested and managed
the "CLIP-ON" cooker project
• Developed the manufacturing methods, 2D drawings on AutoCAD and were
approved for manufacturing.
• The cooker is manufactured in 2 variants and different capacities:
• Stainless steel:2L, 3L, 5L and 6L
• Hard-Anodized: 2L, 3L, 5L and 6L
3
Clip-On Stainless steel cooker Clip-On Hard-Anodized cooker

4. Farberware Pressure Cooker
TTK Prestige Limited
• The cooker features sturdy aluminum construction for fast and even heating, and a
gasket inside the lid to ensure airtight seal during use. Besides the locking lid, the safety
features include two built-in indicators—one visual, one audible, and a valve that
automatically and safely regulates pressure inside the pot
• Durable, easy-to-clean aluminum construction heats quickly and evenly; locking lid features
interior gasket for airtight seal.
• Developed the manufacturing process of the cooker and expedited the manufacturing
process of the Multi-Function Safety Device using die casting technique.
• Expedited the mechanical design of the "FARBERWARE" cooker on SolidWorks and
AutoCAD.
• The cooker contains a new patented mechanism called the “Multi-Functional Safety
Device” that does not allow you to open the pressure cooker until its build up pressure has
gotten released naturally. If the lock isn’t activated, similarly there would not be a buildup of
pressure as well.
4
Farberware 6 quarts cooker Farberware 8 quarts cooker
Multi-Functional Safety Device

5. One-touch microwave Pressure Cooker
TTK Prestige Limited
5
Opening mechanism of the One-touch microwave cooker
• This microwave pressure cooker can be opened with one push and is also smooth to
close. Here, the lock pin rises when the cooker is under pressure. The lid can be
opened when there is no pressure.
• The cooker is manufactured through an injection molding process using polypropylene.
• Worked on the manufacturing technique, design and prototyping of the cooker
components.
• Designed the model on SolidWorks and created 2D drawings on AutoCAD.
• This cooker is an export variant and sold across many major countries.
One-touch microwave pressure cooker

6. Microchef microwave Pressure Cooker
TTK Prestige Limited
6
• This microwave pressure cooker cooks at half the pressure compared to a
conventional cooker.
• The cooker carries many safety features :Pressure Regulator, Safety lock, Pressure
indicator
• The cooker is manufactured through an injection molding process using polypropylene.
• Worked on the design, manufacture, and prototyping of the cooker components.
• Designed the product on SolidWorks and created 2D drawings on AutoCAD.
• Researched and implemented the safety mechanisms for safe user usage.
One-touch microwave pressure cooker
Safety Lock Pressure IndicatorPressure Regulator

7. Implementation of Kaizen for cooker
production
7
Implemented Kaizen to increase the productivity of Aluminum pressure cookers.
The financial benefits as a results are:
• Energy Cost Reduction by Rs.29000 Per Month
• Compressed Air Cost Reduction by Rs.10300 Per Month
• Maintenance Spare Parts Cost Reduction
• Maintenance Labor Cost Reduction
• Tool Maintenance Cost Reduction
• One Press available as Spare, can be used for other Production which doubles the
Production capacity.
Non-Financial Benefits as Results are:
• Confident developed to challenge the tasks to achieve the Business Goals
• Flexibility in Production
• Concept of "Thinking Out of the Box" improved at all levels.
Kaizen targets and results for daily cooker production

8. Methodology and process flow chart for
pressure cookers
8
Methodology of pressure cooker production
Process flow of pressure cookers

9. Digital Implementation of PID Controller
University of Illinois at Chicago
• This experiment aimed to analyze and build a digital Proportional-Integral-
Derivative (PID) controller and a hardware in the loop (HIL) test with the
implementation of Arduino boards, Arduino C++ code and circuit components. The
PID controller controls the input to the Plant with the use of feedback control. The
goal of this experiment is to explore the behaviors of a digital PID controller and HIL
test. The circuits were built with a 47kΩ resistor and a 220nF capacitor.
• A 6𝑉 square wave input signal was used to observe the system behaviors from
the oscilloscope, measuring changes in magnitude and phase shift. We
compared the experimental measurements of the PID with the analytical
predictions using MATLAB and the results of the analog PID controller
Circuit of digital PID controller
PID output from oscilloscope PID output from MATLAB
9

10. Closed loop DC Motor Position Control
University of Illinois at Chicago
This experiment involved the design of a circuit to control the direction,
position, and speed of a DC motor using an encoder with feedback in
conjunction with an H-bridge. The closed-loop PID control algorithm is used to
control the position and speed of a DC motor with the PWM signal from the
Arduino micro-controller and H-bridge circuit using transistors. The H- Bridge
circuit which has two N-channel and two P-channel MOSFETs is used for
driving the motor. The direction of rotation of the DC motor is controlled by H-
bridge depending on the current flow through the transistors. An optical rotary
encoder uses light and dark to determine the position of shaft and from that the
position of an object. By fine-tuning the proportional, integral and derivative
gains, the output of PID is controlled to desired specifications.
The goal of this project is to:
• Tune PID gains in the Arduino sketch for position control and analyze the
results for different gains.
• Tune PID gains in the Arduino sketch for speed control and analyze the
results for different gains.
Circuit of closed loop DC motor control
10

11. Computer Aided Design and FEA of a bike trailer
University of Illinois at Chicago
For this project, we decided to set the following aspects as the goals and attempt to encompass
them all through our design. A Light-weight and portable design keeping with the safety and
storage requirements.
• This is attached to the bicycle and is capable of transporting both, children and luggage, (i.e.
having a maximum loading capacity of 300lbs).
• A trailer that has an integrated suspension system that can cushion the load carried by the
trailer.
• A design that can be dismantled and re-assembled easily.
Based on the CAE Analysis, we can conclude that;
• The design is lightweight and portable.
• It is capable to transport loads up to 300 lbs.
• A design that can be dismantled and re-assembled easily.
Assembly of bike trailer
Exploded view of bike trailer FEA of the beam
11

12. FEA of a steel bracket
University of Illinois at Chicago
The goal of the project is to perform a structural analysis of an L-bracket. The
following two cases were considered for vertical loading of bracket..
• 1.Bracket with stiffener support 2. Bracket without stiffener support
• The nodal displacements and equivalent stresses were plotted and stresses were
analyzed under loading conditions of 250N. ANSYS solutions were verified using
analytical calculations which involved variable cross-section moment of inertia of
stiffeners and deflection calculations.
• The deformation and stress patterns were studied and compared for both the models
using ANSYS Workbench and manual calculations which were processed with
MATLAB.
• From the convergence plots the deformations for the bracket without stiffener
obtained from the analytical calculations are close to the deformations obtained from
ANSYS Workbench.
Bracket with stiffener support
Von-Mises stress results Von-Mises stress results
12
Bracket without stiffener support

13. Linear static analysis for FluidMesh
PCTEL Inc.
The primary purpose of the project was to conduct a finite element study on the
Omnidirectional Antenna for FluidMesh.
• A Linear static analysis was conducted to check the stress points between the
antenna base and the printed circuit board (PCB)
• The initial analysis was conducted excluding the radome and the dampers.
• The linear static analysis showed a stress value of 1500MPa.
• The stress occurred at the contact points between the PCB and the soldered
portion between the antenna base and the PCB.
Linear static analysis on Nastran
Stress analysis on Autodesk Inventor Safety analysis on Autodesk Inventor
13

14. FEA of NPD35171,GL7X1KIT-NYCDOT bracket
PCTEL Inc.
• A finite element analysis was conducted to check the maximum displacement
of the Stainless Steel antenna mount under standard loading conditions
• The analysis was performed on 2 variants of antenna mounts: 1.5mm
thickness and 2.5 mm thickness.
• The antenna mount was loaded at 255N.
• The 1.5mm thickness antenna mount had displacements of 36.78mm at the tip
of the plate and the 2.5mm thickness antenna mount had displacements of
10.048mm at the tip of the plate.
• Due to the high displacement values of the 1.5mm antenna mount, the antenna
mount eventually undergoes failure at a faster rate compared to the 2.5mm
antenna mount.
Analysis of 2.5mm thickness antenna mount Analysis of 1.5mm thickness antenna mount
14

15. Thermal analysis of a coaxial cable
PCTEL Inc.
• A thermal study was conducted to check the melting point of the polyethylene
dielectric under 2 sets of temperature and time conditions.
• Nonlinear transient response using varying heat flux and temperature conditions
was analyzed on Nastran In Cad, and the results were tabulated.
• The results were checked for two sets of temperature conditions i.e. 500℃ and
380℃
Case 1: The solder temperature:500℃
The solder temperature maintained at 500℃ for 1 second
The analysis shows the maximum temperature reaches the outer layers of the
dielectric(788 K). The inner layers of the dielectric remains at the optimum
temperature.
Case 2: The solder temperature:380℃, Convection: 5W/m2 K
The solder temperature maintained at 380℃ for 5 seconds.
The analysis shows the maximum temperature reaches the outer layers of the
dielectric(645K). The inner layers of the dielectric remains at the optimum
temperature.
`
Thermal analysis of coaxial cable
Case 1: Temperature : 500℃; Time : 1s Case 2: Temperature : 380℃; Time : 3s
15

16. Static analysis of an antenna ground plane
PCTEL Inc.
• The main objective of this project was to check the deformation of an antenna
ground plane.
• The analysis on Autodesk Nastran was carried out in 3 ways
• Case 1: A wind load of 60 N was applied to the antenna ground plane and the
deformation and stresses on the antenna connectors were tabulated.
• Case 2: Linear static loading with connectors to check the deformation and
connector stresses of an antenna ground plane with no wind loading.
• Case 3: Wind loading of 60 N with no connectors was applied to check the
deformation of an antenna ground plane.
Case 1 Case 2
Case 3
16