1. Link to Final Reports of Projects Completed by Vincent Harnett
https://drive.google.com/open?id=0B9Esfq6hvDvYMUNlaGlFeDZRWGs
Projects
1. Invention ­ Salad Dressing Lid
2. Battle Bot Project (Robotics)
3. Bicycle Crank Design Competition
4. Peristaltic Pump Project
5. Reuleaux Mechanism CAD Model
6. Stress Analysis ­ Bicycle Caliper Brake
7. Academic Poster
Outline of Projects
1. Invention ­ Salad Dressing Lid
Invented and 3D printed an original product
I worked with a team of three students to invent a salad dressing lid with two lips. The inner lip was larger
than the outer lip and acted as a catch for dressing runoff. The base of the outer lip was angled which forces
the dressing to the rear of lid where it is then funneled back into the dressing bottle.
Together with a partner, I created four models on SolidWorks. These models came together to form the
Dual Lip Glide Product Fleet, “The Lips Without a Drip.”
In addition, I individually created the website as a marketing platform (​http://dual­lip­glide.weebly.com​). I
also helped the third group member organize our extensive project notebook (see Final Reports of Projects
link, “Invention ­ Salad dressing Lid”) . This document includes the meeting log, brainstorming ideas,
customer interviews, design specifications, performance, marketing, and more. In conclusion, this project
gave me valuable teamwork experience critical to my time at Cornell. I learned how to bring positive
energy to a team setting and fulfill active leadership roles. This project has been one of my proudest
achievements.
“The Lips Without a Drip”

2. 2. Battle Bot Project
Practiced coding (C), circuitry, and mechanical design skills to create fighting robot
I was in charge of the mechanical design for the Brake Your Momentum battle bot. My biggest challenge
was to design and build the active element. Our active element was unique because it was defensive, all
other groups applied offensive active elements such as flippers. To build our anti­flipper brake, I utilized a
door hinge and connected it to a plastic tube. On one end of this plastic tube I drilled a hole that acts to
control the angle at which I attached the bicycle brake pad via epoxy. Having the right angle meant
maximizing the contact surface and consequently the friction that the brake created when our opponents
tried to push or flip our bot.
In addition to machining and designing, I took an active role in planning meetings and attending open labs
to help with the circuitry and coding. To coach a positive team environment, I stressed the importance of
working collaboratively rather than completing tasks individually. When it came to writing the report, I
created the coding strategy flowchart and took on the tasks of structuring, editing, and reworking the entire
report. For completing our milestones early, our robot received a first round bye and was seeded 10th out of
52 teams. In conclusion, the active element I designed and built functioned well and we finished in the top
25th percentile of teams in competition.
“Brake Your Momentum”
3. Bicycle Crank Design Project
Created both manual and automated optimization designs of a bicycle crank
On this individual project dealing with finite element analysis, I created a bicycle crank model in Ansys.
With the model, I made a refined mesh to analyze max deflection, principal stresses, and effective stress. In
areas of high stress, there were more nodal points which resulted in more accurate stress values. Next, I
used CES EduPack to select my material choice and minimize mass and price. After interpreting my graphs
(see Final Reports of Projects link, “Bicycle Crank Design Project”, pgs. 14­15), I selected an aluminum
alloy.

3. After analyzing the baseline model, I performed an automated optimization in Ansys with five variable
measurements. The result was a lighter model which exceeded the minimum factor of safety and minimum
number of cycles to failure.
In addition to the guided project, I took advantage of the option to design my own bicycle crank (see
picture below). I removed more material especially in areas of low stress and used fillets to minimize stress
concentration areas with curves. The final weight of my crank was .0639 kg, not far from the winning
crank’s mass of just less than .060 kg.
“Bicycle Crank Design Competition” ­ Ansys
4. Peristaltic Pump Project
Built a water pump with a flow rate of at least one liter per minute
Our group did not want to create a standard single­piston water pump like the other groups in our lab
section. Instead, we decided on a peristaltic water pump which utilized rollers and tension to suck water
through peristaltic hoses. The peristaltic pump uses rotational motion instead of converting rotational
motion into linear motion as in standard piston cylinder pumps. First we modelled the pump in SolidWorks,
designing nearly twenty parts. Then, I created an animation of the pump running for an in class presentation
(see ​https://www.youtube.com/watch?v=yj8R1yJO4OY​).
The most difficult challenge to overcome was staying within budget. I took extra measures to minimize our
budget. I discovered scrap metal in the machine shop which I proceeded to turn on the lathe to create the
rollers. I also went to a local hardware store and found a housing component for the pump resulting in
savings of over twenty dollars.
The night before competition I brought pizza to the lab and we perfected and tested our model late into the
night. The next morning I added graphics cut out of duct tape to agree with the name, PumpSeidon, and
improved the overall aesthetics of the pump. At testing day, our pump was the only successful peristaltic
pump. We also surpassed the minimum flow rate.

4.
“PumpSeidon”
5. Reuleaux Mechanism CAD Model
Built a Reuleaux Mechanism in CAD
For this individual project, I chose to make a Root’s Blower Chamber Wheel Mechanism. This Reuleaux
Mechanism is commonly used as a gas exchanger in internal combustion engines. Cornell’s model Root’s
Blower Chamber Wheel was in a display case so I had to size and scale each part without measuring the
actual mechanism. Thus, integrating the parts to have them fit and move together was a difficult task. After
building all 17 components, I assembled them with constraints. Lastly, I added drivers for rotational motion
to create an animation (​https://www.youtube.com/watch?v=KNQlMsI3s28​).
“Root’s Blower Chamber Wheel Mechanism”
6. Stress Analysis ­ Bicycle Caliper Brake
Analyzed stress in a bicycle caliper brake
This project required in depth finite element analysis and coding in Matlab (see code in Final Reports of
Projects link, “Stress Analysis ­ Bicycle Caliper Brake”, pgs. 7­10). Principal stresses, effective stress, and

5. stress locations were analyzed in the caliper brake. The purpose of the project was to compare theoretical
stress values for a simple straight beam in bending compared to stress in the bicycle caliper brake (already
bent) in bending. The result is that unlike a straight beam in bending the neutral axis in the caliper is off
center to the right.
“Bicycle Caliper Brake”
7. Academic Poster
Researched and presented a biocompatible medical device
I researched the ​Alcon AcrySof IQ Toric Lens used to treat astigmatism and cataracts. Aside from research,
I utilized my background with Microsoft Office software to create the poster in PowerPoint.
“Alcon Acrysof IQ Toric Lens”