ipg portfolio june 2009
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DESIGN PORTFOLIOIrshaad Goedarirshaad@gatech.edu
Overview of Recent Projects
Siemens Energy & Automation, Inc.
(May – August 2008)
Mechanical / electrical engineering internship
Worked on a team with focus in industrial circuit
breaker accessory design
Georgia Tech Capstone Design Project
(January – May 2009)
Cryogenic freezer redesign sponsored by Air
Products Chemicals, Inc.
Disclaimer: The information contained in this presentation has been deemed suitable for
disclosure to the general public by authorities within these companies.
SE&A Internship
SE&A Internship
Background
Learning Pro/E during first week
Modeled “neutral assemblies” for use in circuit
breakers to maintain equal voltage across poles
SE&A Internship
Background (cont.)
Maxflex Handle Operator
Accessory
Functions to trip a circuit
breaker remotely
Design problem
Ergonomic issue: installation of
cables onto breaker requires
disassembly of Maxflex unit
Maxflex unit
SE&A Internship
Proposed solution 1
Re-manufacture both
plates in Maxflex unit
to allow unobstructed
access to bolts
Problem:
Expensive because it
will create scrap parts
Upper plate (sliding)
Lower plate (fixed)Unobstructed bolt
access
SE&A Internship
Proposed solution 2
Reverse bolt
positioning to allow
quicker disassembly of
Maxflex unit
Problem:
Cheap fix, but presents
inconvenience of rear-
mounted breaker
Obstructed but
easier disassembly
SE&A Internship
Proposed solution 3
Slot the fixed plate to
allow removal of Maxflex
unit from side
Problem:
Unconstrained unit
(lateral motion possible)
presents safety hazard
Loosen bolts and slide
plate right to remove
SE&A Internship
Proposed solution 4
Make L-shaped slots in fixed
plate to allow lateral removal
Unit is constrained because it
can only produce motion
downward (to turn breaker off)
Conclusion:
Solution 4 implemented after
extensive quoting process
SE&A Internship
SE&A Internship
Design project
Larger enclosure and
stronger mounting
structure needed for
internal testing of
prototypical circuit
breaker
Combined a modular
steel mounting structure
with glastic reinforcement
SE&A Internship
Design project (cont.)
Responsibilities
3-D modeling
Preparation of drawings
Part / hardware ordering
Machining
Assembly
SE&A Internship
Design project (cont.)
Pro-E Model Actual
SE&A Internship
Capstone Design Project
Background
Sponsored and budgeted by Air Products
Design focus:
Innovation
Minimizing cost and weight
Maximizing efficiency
Capstone Design Project
Design Overview
Exhaust
System
Pneumatic Lift
SystemConveyor Drive
System
Cryogen Supply
System
Enclosure
SystemRecirculation
System
Capstone Design Project
Design Overview (cont.)
All these various systems were designed from the
ground-up to obtain fresh perspective
Researched competition at 2009 Poultry Expo
Relied on APCI contacts when necessary
Scope of project:
Material selection and structural analyses
Part specifications and BOM
Thermodynamics and heat transfer analyses
Cost and marketability analysis
Capstone Design Project
Some Details
Pneumatic Lift SystemEnclosure System
Capstone Design Project
Some Details
Cryogen Supply System
Conveyor Drive System
Some Details
Capstone Design Project
Recirculation System
Exhaust System
Key Elements / Innovations
Replaced stainless steel exterior with polyester-
fiberglass composite (glastic) panels
Capstone Design Project
304SS
interior panel
Polyurethane
foam insulation
Glastic
exterior panel
Rivets
Capstone Design Project
Key Elements / Innovations (cont.)
Effects on performance and marketability:
Thanks for your time!
Contact information
Irshaad Goedar
irshaad@gatech.edu
770-842-8278
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