Rami Hamzey - Boston University · Design Portfolio — Rami Hamzey 2 Ankle Tracking Device...

Design Portfol io — Rami Hamzey 1www.ramihamzey.me

RamiHamzey

Ankle Tracking DeviceCollapsible SkateboardDisc PackagingSmart Gasket

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http://www.ramihamzey.me


Ankle Tracking DeviceAssessment of Fine Motor Control at the Ankle

ObjeCTiveDesign an affordable, portable system

that can be used to quantify outcomes

of a lower limb mirror therapy program

for people with stroke.

Design Portfolio — Rami Hamzey 2www.ramihamzey.me

http://www.ramihamzey.mehttp://www.ramihamzey.me


Adjustable Straps

BasePotentiometer

HingedAnkle Brace

Adjustable Straps

BasePotentiometer

Ankle Brace / AFO

Computer Monitor

User InputSine Wave Target

Arduino

1. Portable and easy to use – Task will be directed at remote sites by staff with varying amounts of familiarity with the protocol. 2. Affordable – Pilot study 3. Adjustable – Multiple participants, both legs 4. Precise - Ability to sense small movements in a population that may have as little as 5 degrees active range of motion in the ankle.

CONCePT

RequiReMeNTS



HARDwARe

Adjustable...

...height

...angle

...size(velcro straps)

Leg Stand

SOFTwARe

60 70 80 90 100 110−40

−30

−20

−10

0

10

20

30

Deg

rees

from

90°

ank

le p

ositi

on (+

= D

F, −

= P

F)

Time (s)

Pretreatment Assessment 1 − Unaffected Limb − Tracking

Accuracy Index: 47.52 Target User R.O.M.

MATLAbArduino Processing

Goniometer

Linear taper potentiometer

Modified AFO

Ankle Tracking boot



iMPLeMeNTATiON

NexT STePS1. Reduce AFO hinge resistance: Participants with

significant ankle weakness are unable to move the boot.2. incorporate other forms of optional feedback (e.g.

real-time score, color feedback)3. improve sturdiness of leg stand. Sturdier materials.

1. Portable and easy to use – System can be run from a laptop. Three simple components: boot, Arduino, leg stand. Simple calibration process, two keystrokes.

2. Affordable – off-the-shelf hardware, Arduino, and re-purposed ankle-foot orthosis.

3. Adjustable – removal of toe box allows device to be used on either leg. velcro straps allow toes to be strapped down firmly. Leg stand is fully adjustable (height, angle, velcro straps for different leg sizes).

4. Precise – Data collection at 1000 Hz. Arduino ADC resolution of 10 bits can detect angular movements of less than 1 degree.

ASSeSSMeNT(video)


Design Portfol io — Rami Hamzey 6www.ramihamzey.me Design Portfolio — Rami Hamzey

Collapsible SkateboardPhysics-themed board That Fits in a backpack

ObjeCTiveDesign a skateboard that will collapse and

fit into a standard backpack.

6www.ramihamzey.me



CONCePTS

Thumb Screws

Slide BoltsConcealed Screw Slide Bolts

Labeled Dimensions

A - 6”B - 7/8”

C - 2 1/2”31 1/2”

8 1/2”

Bottom ViewTop View

McMaster-Carr #1253A11

LatchesWork-Load Rated Multidirection

Draw Latches

A - 3 15/16”B - 1 13/16”

LatchHolding Capacity (lbs.)

X - 880Y - 880Z - 1,980

31 1/2”

8 1/2”

Bottom ViewTop View

McMaster-Carr #6682A33

RequiReMeNTS

1. Portable and easy to use — quickly collapse into a backpack.

2. Sturdy — board must be able to withstand forces higher than body weight.



Grip Tape Bottom

Solution 1: Channel and wing nuts Solution 2: Draw latches

iMPLeMeNTATiON

Graphics

Advantages:1. Sturdy2. wing nuts are easily replaceable if they become damaged.

Disadvantages:1. Complicated disassembly.2. Too much loose hardware (12 wing nuts, washers, screws)3. if left attached to one side of the board, the two pieces are too

long to fit into the backpack.

Advantages:1. Sturdy2. quick to assemble3. All hardware remains attached to the board.

Disadvantages:1. Difficult to replace or fix draw latches if they

break.2. More expensive than wing nuts.



Draw latches (Solution 2) are quicker to disassemble and allow the surface of the board to remain flat. (video)

ASSeSSMeNT

1. The next version will use a flat deck that will allow the addition of hinges. it will be able to fold into a smaller effective volume.

NexT STePSturdy – work load-rated multi-directional draw latches support body weight, bouncing, turning, and kicking. (video)

Portable and easy to use – Fits in backpack with space for other gear. (video)

Click frame to play video Click frame to play video

Click frame to play video


Design Portfol io — Rami Hamzey 10www.ramihamzey.me Design Portfolio — Rami Hamzey

Packaging Redesignevolving Story CD packaging

ObjeCTiveRedesign the cover art for a music CD.

10www.ramihamzey.me



RequiReMeNTS

1. Graphic Design class assignment was to redesign the cover artwork for any music CD.

2. My personal objective was to redesign the packaging to create a more engaging consumer experience.

CONCePT 1. Album: Parking Lot Music (2001) by e*vax. Listen:

2. Style keywords: entrancing, melodious, dreamscape, earworm, robotic versus organic.

in each track, e*vax lulls the listener into a comfortable dreamscape that builds complexity while feeling

cohesive.

3. inspiration: Do Androids Dream of Electric Sheep? by Philip K. Dick.

4. Final Goal: Create an evolving story line that grows in its absurdity with every flip of the book. At each turn,

the context becomes more elaborate while maintains graphical continuity.

CD Cover

CD Sleeve

Disc Label

Polycarbonate

re�ective backing

Disc Components

http://www.ramihamzey.mehttps://myspace.com/evaxmusic/music/album/parking-lot-music-10424580


iMPLeMeNTATiON

1. This project exceeded the assignment, whose aim was creative rather than technical. if this packaging were mass produced, higher quality materials and manufacturing processes would be required.

ASSeSSMeNT



“Smart” Gasket SensorPiezoresistive polymer gasket

winning entry, ePiC Design Competition sponsored by Garlock

ObjeCTiveDevelop an industrial grade “smart”

gasket with the ability to sense leaks,

failures, and blowouts.



CONCePT

RequiReMeNTS

1. Design Prompt: Pick from a variety of different Garlock products, learn about the product, and design ways for embedding sensors

to monitor performance. Garlock is the global leader in sealing and pipeline protection products for industry and infrastructure.

2. blowouts and leaks have the potential to put the environment, community, employees, and company at risk. None of Garlock’s

products have sensing capabilities, thus failures and rigorous inspections are the only way to know when a gasket is damaged.

Rather than embedding sensors, take advantage of the materials and processes in Garlock’s manufacturing process. Gasket bulk

material could act as a piezoresistive sensor by doping it with the appropriate carbon allotrope.Sensing Circuit Schematic

WheatstoneBridge

ADCTx

Di�erential Amp

Piezoresistive Material

Possible allotropes

Carbon black expandedgraphite

Graphene Carbonnanotubes



Technical drawing of prototype gasket with one possible electrode geometry. Five layers of piezoresistive carbon. Two layers include electrodes.

iMPLeMeNTATiON

Silicone polymer with graphene and carbon black. varying carbon concentrations.

134 2

3 2 14

A

B

C

D D

C

B

A

1/16 5 X 1/64

24.00032.000

20 X 1.380

1.000

0.809

REVISIONS

REV DESCRIPTION DATE APPD

DIMENSIONSIN

INCHES

TOLERANCESEXCEPT

AS NOTED

FRACTIONS 1/32X.X 0.030X.XX 0.015X.XXX 0.005ANGLES 0.5

BOSTON UNIVERSITY COLLEGE OF ENGINEERINGTITLE

Gasket PrototypeDRAWN BY DATE SHEET SCALE SIZE PART NUMBER REV

Viva la piezo-resistance 12/04/2014 1 of 1 1:5 C EDC1 -

ASME B16.5 & B16.47 - 150# Flanges

SEE DETAIL B

SEE DETAIL C

SEE DETAIL A

SCALE 10:1DETAIL A

SCALE 1:2DETAIL B

SCALE 1:2.5DETAIL C

Could be implemented in existing production process, but significant development challenges remain:

1. Catering polymer properties to have a functional strain curve over typical application pressures.

2. Higher carbon content leads to more brittle gaskets.

3. Maintaining seal integrity with electrode placement.

4. Determining ideal layout for electrode geometries experimentally.

ASSeSSMeNT

Piezoresistance testing. Polymer disk detail.


Table of ContentsAnkle Tracking DeviceCollapsible SkateboardPackage Redesign"Smart" Gasket

Rami Hamzey - Boston University · Design Portfolio — Rami Hamzey 2 Ankle Tracking Device...

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