p16371 - controlled oscillating preliminary detailed

RIT Thermal Analysis Microfluidics

and Fuel Cell Lab

Preliminary Detailed Design Review

P16371 - Controlled Oscillating Meniscus Test Fixture

RIT Thermal Analysis Microfluidics and Fuel Cell Lab

PresentersCharles Krouse, Joseph Baldwin, Robert Walkowiak

and Alyssa Recinella

December 10, 2015


and Fuel Cell Lab

Team RolesCharles Krouse: Team Lead

Robert Walkowiak: Master Builder

Alyssa Recinella: Communications

Joseph Baldwin: Lead Engineer

12/10/2015 RIT Thermal Analysis Microfluidics and Fuel Cell Lab Slide 2


and Fuel Cell Lab

Customer Requirements



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Engineering Requirements



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System Schematic

Slide 512/10/2015 RIT Thermal Analysis Microfluidics and Fuel Cell Lab


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Subsystem Breakdown

• Subsystems• Fluid Injection• Oscillator• Capacitance Sensor• PID/LabVIEW• Visibility • Height Adjustment



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Fluid Injection Status


Responsibility: Charlie


and Fuel Cell Lab



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Capacitance Sensor


Responsibility: Joe


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Capacitive Sensor With Heat Flux


http://www.youtube.com/watch?v=E6MuxLXaPTw


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Visibility


Responsibility: Everyone


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PID/LabVIEW


Responsibility: RobNon critical system, no change since last time, will be addressed in MSD II


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Height Adjustment


Responsibility: RobNon critical system, no change since last time, will be addressed in MSD II


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Height Adjustment - Preliminary Testing


● Stage found in the lab● Has relatively fine

adjustment● Need to fabricate base

plate to mount it securely to the isolation table


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Height Adjustment - Preliminary Testing


● For flexibility of injection system to allow for needle to move chose brake lines

● Can withstand high pressures (3,000psi+)● Robust and cost effective


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The Oscillator


Responsibility: Alyssa


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The Oscillator - Preliminary Testing


Left: Big speaker, water droplets on top of plastic membrane Center: Amplifier used to control speakers and volume

Right: Mylar speaker with water droplets on top of plastic membrane


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The Oscillator - Preliminary Testing


● Approached Dr. Lam to discuss speaker dampening ● Two really important points

○ Added noise in graphs due to lights■ No way to get rid of that■ Can implement a filter to reduce the noise

○ We should be wearing earplugs!! ■ Certain frequencies can be damaging to our ears ■ All feasibility testing was done wearing earplugs■ This was really great advice


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The Oscillator - Continuation


● Ordered Materials ● Developed designs

○ Redesigned 3 times ○ Discussed with Dr. Lam ○ Suggested a change in the internal pitch angle ○ 3 different fixtures for each

■ Creating one of each first for proof of concept○ Rob - machining


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The Oscillator - Big Speaker Assembly



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The Oscillator - Small Speaker Assembly



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The Oscillator - Small Speaker Angles


15 degree internal pitch angle

● Problems we ran into○ Machine shop has dull tools○ People spread out tools, don’t clean or put things in the wrong spot○ Tried out two different machining methods○ Had to construct fixture

● The future○ Bought sharp carbide inserts for lathe tools so future machining

will go faster○ Fixture constructed to make things easier


and Fuel Cell Lab

The Oscillator - Small Speaker Fixture


Left picture: 15 degree taper Above: Clamping plate and cone


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The Oscillator - Preliminary Oscillations


● Glass Pipette and Keyence camera used for liquid supply and visuals ● Needle was submerged in water ● Various frequencies were attempted

○ 10 hz was visible to naked eye○ Need more complex camera for higher frequencies

■ Current camera can only shoot 28 fps


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Needle and GlassPipette

Speaker Assembly


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← Needle in glass pipette; needle in contact with water

→ Glass pipette (broken) with rubber cap on end.


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10HZ

http://www.youtube.com/watch?v=cSUWuFmGMbk


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The Oscillator - Future Testing


● End of semester (gate review)○ Testing with at least three different gaskets○ Marking glass tube to measure amplitude of

oscillations ○ High speed camera

■ Current camera not fast enough to capture oscillations at high frequencies

■ Super resolution, low fps○ Possibly different speaker orientations

■ One vertical, one horizontal○ 6” speaker isn’t there yet; hopefully soon


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Testing Plans



and Fuel Cell Lab

The Next 3 weeks


For the next three weeks, our team plans to complete the following tasks:● Testing the oscillating system with varying criteria● Collecting data and searching for dampening reasons● Gate review (Monday, 12/14?)● Enroll in MSD 2● Christmas, New Years

a. Cookiesb. Family and friendsc. Fireworksd. Sleep


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Thank youQuestions?


p16371 - controlled oscillating preliminary detailed

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