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TABLE OF CONTENTS
1 - About Me
2 - Design Process
3 - AIR
5 - Audi Future of Mobility
6 - Autonomous Laser Hair Removal
8 - Golf Ball Vehicle
10 - Insert3D
12 - Toothpaste Squeezer
14 - Gearbox
16 - Lunch Buddy
ABOUT ME
Brian Namnoun | [buh-rye-an nahm]
source: Merriam-Webster The name Brian comes from Irish origins, but the surname Nam is of Korean descent. Brian Nam is considered a 2nd generation Korean-American. He was born and raised in Queens, New York by his unconditionally loving parents and two rather brotherly sisters. In his earlier years, he practiced golf under his father’s coachings. As he grew up, however, he learned to play basketball and snowboard; he enjoyed the company of his friends and exploring new places. Brian is currently attending Boston University studying mechanical engineering.
source: Urban Dictionary Brian Nam is a total nerd; he gets super excited looking at car engines and insides of watches. He is also materialistic; he loves to have things that look nice. Brian has a unique sense of humor, making him a fun person to be around all the time. He is the best friend you can make (specially because he is always willing to eat with you).
“IfIwereanemployer,IwoulddefinitelyhireBrianNam.”
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DESIGN PROCESS
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Understanding the Problem
Immerge yourself into the situation and identify the problems. Focus on the
problem’s context and its users. It is best to have as many details
as possible in the beginning.
Market Research
Take this time to see if there are anypre-existing researches or solutionsto your problem. Look for statistics,
articles, etc. In addition, conduct yourown surveys, specifically tailored
to your situation.
Ideate
Brainstorm! Think of all the potential solutions.Build off of other people’s ideas. Remember,
there is no such thing as a stupid idea!Once all ideas have been shared, use tools,
like pugh charts, to select the mostpromising idea.
Prototype
Use all the resources around you to quicklymodel your idea.This should not
be a lengthy process. Prototyping will help you notice
any problems with your product early.
Testing
Now that you have a functional prototype anda more concrete idea, go ahead and refine it!
Put your idea through some experimentsand collect data. This can also include
releasing your product to the publicfor alpha/beta testing; use the feedback.
Synthesis
This is probably one of the most importantstep in this process. Compile all the informationyou found and narrow it down to key insights.
Make sure they stay on track and doesnot derail from the main problem.
You want to make sure each insightclearly points to a target area.
Prototype
Use all the resources around you to quicklymodel your idea.This should not
be a lengthy process. Prototyping will help you notice
any problems with your product early.
Sometimes you just need to take a couple of steps back
AIRGOAL: Design an asthma inhaler that can always be carried around, by the user, easily and comfortably.
BACK STORYA friend of mine is in ROTC, which requires him to exercise intensely. The only problem is that he has asthma. His inhaler was not only ugly, but also an inconvenience for him to carry around during training; the inhaler was too bulky to fit comfortably in his pockets. He always left his inhaler at home for this reason and inevitably suffered numerous asthma attacks. My friend and I saw the urgency to fix to this problem and created AIR.
THE SOLUTION
PRELIMINARY DESIGN
AIR is an athletic wristband that can release and store asthma medication with a push of a button. It’s design allows users to comfortably carry their inhalers around everywhere they go, whether it be to the gym or to work. You never have to compensate your health for comfort ever again.
CAD model on Solidworks 3D printed prototype of the preliminary CAD design
After brainstorming, we thought of an elastic, disposable wristband that contains a limited supply of asthma medication; the asthma medication is pressurized and stored within the band. To release the medication, the user will place his mouth on the opening and squeeze the band. A smart valve in the opening will ensure that a recommended dose will be released everytime. When it’s empty, it can be disposed in the trash.
Opening for mouth
Elastic Band
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Current asthma inhalers
SURVEY RESPONSEMy partner created a survey to gauge the market’s interest in our product and we learned many things. Results showed our customers liked the idea of the overall product, but didn’t like how it was disposal. Next, they didn’t like the design; it was too square and lacking style. Finally, customers voiced concerns about the mouth opening collecting dirt/dust over time. So, we went back to work!
FINAL DESIGN
Rubber stopper to block dirt/dust from entering the opening
Opening for mouth
Button to release asthma medication
Two-part body for easier fitting
Oval face
Rounded edges
Cavity to house a can that stores asthma medication
Top view of top part
Top view of full part
Bottom view of top part
Bottom view of bottom part
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AUDI FUTURE OF MOBILITYGOAL: Conceptualize technology ideas that can help shape the future Audi car.
BACK STORYI was selected, amongst 11 other students from univeristies across the US, to work for Audi in Ingolstadt, Germany and tackle a global problem: traffic. The world population is constantly rising and contributing to the heavy traffic congestions in large cities around the world. This inefficiency not only wastes millions of commuter’s daily time, but also billions of dollars in fuel. With the world’s fuel reservoir quickly depleting, it is crucial that we address this issue immediately.
MY ROLESThere were three unique groups working on this project. I worked in a team that focused solely on cartechnologies. We utilized the design thinking process to breakdown data obtained from our surveys and market research.
OUR SOLUTIONWe developed a network of technologies that help integrate drivers to their environment. This allows motorists to concentrate their attentions onto the road, increasing the flow of traffic. In addition, all ideas were made sure to reflect Audi’s luxurious quality.
*An NDA was signed for working on this project 5
AUTONOMOUS LASER HAIR REMOVALGOAL: Fully automate a laser hair removal procedure to decrease the operation time.
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0.2
0.4
0.6
0.8
1
1.2
0 0.45 0.9 1
Velocity (m
/s)
Time (s)
Velocity Profile for each motor
Travel Time
Time to actuate solenoid and apply laser
BACK STORYToday’s society places a lot of attention on people’s physical appearance. In 2010, the U.S. cosmetic industry made $53 billion, only to be rising every year; one subcategory of such market is laser hair removal. The current hair removal operation is manual and labor intensive.
THE SOLUTIONCustomers can now have smooth, hairless skin in thirty minutes or less. Once a customer lies down on the bed, a camera scans the customer’s back and legs to map the contours and calculate normal vectors of the surface. This data is stored in memory and later recalled to accurately position the laser wand on the back and legs. The laser wand can be moved in five degrees of freedom thanks to multiple motors and controllers. With everything working together, each laser shot takes less than one second.
Customer bed
Laser hair removal wand Camera to scan contour
Moving stage
CUSTOMER REQUIREMENTSOur machine had several requirements it had to fulfill: - time per laser shot must be one second or less - laser wand must apply 0.5lbs (+/- 0.1lbs) force during laser pulse - laser wand must accommodate curvature of back and legs - must be accurate to 0.010in - laser wand must have dimensions: 0.75” x 0.75” x 6”, 0.25lbs
Velocity profile used to size the motors needed for our specific design
X
ZY
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Relevant Data
Movement Plane Mass (lbs) Distance Torque Required (oz-‐in) Motor Selected
X 11.327 0.375 in 1.124 AEROTECH BM22
Y 17.800 0.375 in 53.813 AEROTECH BM75
Z 3.370 0.5303 in 16.040 AEROTECH BM22
Elbow 0.694 90 deg 6.716 HITEC HS-‐7950TH
Rotary 1.104 180 deg 0.803 AEROTECH BM22
COMPONENT BREAKDOWN
The calculations above show the minimum motor specifications required to fulfill the one second pulse time
X-STAGE
Y-STAGE
Z-STAGE
Z-stage housing
Servo motorKinect (camera) housing
Ball screw
Support shaft
X-stage pillar(8020 extruded aluminum)
Linear drive
Servo motor
Servo motor
Flexible couplingPinion
Bearing
Rack
Brushless DC Motor
Servo Motor
Solenoid
Wand
Spring
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GOLF BALL VEHICLE
GOAL: Build a vehicle that can go as far as possible, powered by the energy derived from a golf ball dropped from one meter above the cart.
BACK STORYBACK STORYMy product design professor started a contest to see which team (of two) can prototype a vehicle that can carry out the task stated above. To mimic real life situations, all teams were given limited supplies and short deadlines to complete the prototype.
CONCEPTUAL DESIGNDesign A
This design shows a vehicle with a 45 degree inclined plane to transfer the falling golf ball’s potential energy to kinetic energy. Another key feature is the guard; it is designed to catch the ball’s rebound and make sure the ball stays on the cart. This extra mass will help stabilize the cart to the floor after the impact. Lastly, the wheel axles will sit in triangular grooves to minimize friction.
Design BThis design features a curved slope to help reduce the impact of the ball onto the cart. It also has straws that act as sleeves to secure the wheel axles; this will help further decrease any friction within the wheels.
PRELIMINARY DESIGNThe design we decided to work with combined ideas from both Design A and Design B. The inclined plane was fixed at a lower angle to ensure the cart wouldn’t flip upon impact. In addition, more cross beams were incorporated to increase rigidity and obtain a more balanced center of gravity. Finally, the straw sleeve idea was taken from Design B.
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IN THE SHOPWe were limited as to what items can be used for the prototype. The items were the following:- Tongue depressors- Pipe cleaners- Straws- Paper clip- Tape- Construction paper
Side view Top view
Back view Top-angled view
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INSERT3D
GOAL: Improve the 3D printer to enhance rapid prototyping.
3D printing has become highly desirable for allowing users to bring their ideas to physical form. Its method of prototyping is quick and cost-efficient. These advantages, however, come at a cost; the products are not as strong, compared to those that have been machined. As a result, tapping holes into printed parts becomes a complicated task. The current method requires an operator to manually place threaded inserts onto the part while the printing process is in progress.
OUR SOLUTION
BACK STORY
Insert3D is a laber-saving, productivity enhancement tool that can automate the installment of threaded inserts. It is an multi-purpose attachment used to store and dispense threaded inserts. Parts will be able to be printed with up to three different types of threaded inserts, which are selected and pre-loaded by the user.
Threaded Inserts
This was a project proposed in my Inventions course. The main objective of this project was to create an innovative product that can potentially be patentable. All ideas had to be supplemented with a prior art search, developed prototype and a patent write-up.
THE PROBLEM
Rendering of our product installed onto a Makerbot 3D printer
Insert 3D
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1 - Embedding device2 - Additive extruder3 - Extruder nozzle4 - 3D printed part5 - Base plate
THE PATENT
Our patent’s claim were the following:Apparatus for embedding threaded inserts into objects created through additive manufacturing comprising of: • A mechanism attached to the additive manufacturing material extruder which controls the embedding of the insert, which can be inserted anywhere on the part in any position or rotation • A mechanism to release a desired insert when in the correct position • A method for positioning the device in the correct location • A method for specifying which insert to place
Our group decided insert3D can also make revenue by licensing to big 3D printer companies.
After a thorough prior art search, using Google Patent Search, we were not about to find any filed products similar to ours. Our professor also came to the same conclusion. In addition, he thought our product can be patentable.
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TOOTHPASTE SQUEEZER
GOAL: Design a product that will maximize one’s ability to squeeze out content from a tube container.
BACK STORYTrying to squeeze toothpaste out of an almost-empty tube can be a hard endeavor, specially when you are half asleep. To make matters even worse, toothpaste tubes are usually crumbled up into random shapes making it a puzzle to unfold and flatten out. Many people just throw out the tubes at this point even though there is still enough usable content for another three days. My project members and I wanted to solve this stressful problem.
Bulky
Ugly
ExpensiveCurrent methods of toothpaste squeezers
(the product on the right is electric)
PRELIMINARY DESIGN
Knob to turn the rollers
Rollers
Slot for tube to leave body
Body (case)
Toothpaste Tube
Nub
Shows how the toothpaste travels through the product
Depicts how the nub is used to remove content around the tip
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Our group wanted to test how effective the roller method would work. The testing will see if friction alone can force down a toothpaste tube between the rollers. We prototyped only the section that secures the rollers to analyze any resultant slip or gap needed between the rollers.
UV curved resin
ABS plastic
Stationary roller hole
Slot for second roller
Screw to change gap between rollers
FINAL DESIGN
An economical, plastic version of the productA luxurious, stainless steel version of the product
FEA TESTINGExternal loads were applied on key structures of the design to see if there were any significant deflections.
Middle column
Edge of roller
HandlesNo parts failed or deflected significantly
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GEARBOXGOAL: Design a gearbox with a gear ratio of 1:240.
OTHER REQUIREMENTS
BACK STORYOver the course of my CAD class, we learned a range of materials from creating extrusions to applying tolerances. As the end of the semester project, we had to create a fully enclosed gear box. This enabled us to demonstrate our proficiency in Solidworks.
There were couple of other requirements the gearbox had to meet:- input and output shafts must be at right angles- input and output shafts must not extend over 1.5 inches beyond the housing- output shaft must support a 10 in-lbf torque and 50 lbf overhung load- support maximum input rotation speed of 5,000 rpm- have an operational life of 25,000 hours- must be fully enclosed during operation
THE GEARBOX
Top view
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Exploded view of the assembly
Front view
Back view
The completed gearbox is made up of one worm gear and two spur gears. All components were toleranced accordingly to ensure a perfect fit. In addition, all the shafts and gears were assembled with class FN fits (force fits). Everything is enclosed by panels with dovetailed edges.
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LUNCH BUDDYGOAL: Model a self-heating food storage container.
BACK STORYA friend of mine is in the hospitality major and had to propose a business model for her class project. She came to me with the product idea of a self-heating food storage container. It was my job to create renderings of her product to be included in her presentation.
Lunch Buddy“A self-heating portable, sealed, food container that makes it possible
to have a hot and delicious meal anywhere, at any time.”
Top row buttons control temperature(Low / Medium / High)
Middle row buttons control time(30 sec / 2 min / 5 min)
Start button
LCD screen
LidHeating coils under lid
Latches
Clear tubCharging port
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RENDERINGS
Lunch Buddy in a school study lounge
Lunch Buddy in the kitchen
ENGINEERING CHALLENGESIn the beginning, my friend wanted to heat the food using resistance wires connected to a battery. The wires would be under the lid to heat the air inside the container. After some research, I found that this would be unrealistic. Since the Lunch Buddy states that it can heat up food as fast as 30 seconds, I compared it to a microwave. A small, standard microwave is rated at ~600 watts. In order for a battery to output 600 watts, it would have to be much larger than the container. We concluded that in order for Lunch Buddy to be manufacturable, there would have to be an advancement in battery technology or an alternative method of heating the food.
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