Engineering Design Portfolio

KRISTINA
MARRERO
st o ryt e lli n g

Using my left brain for problem solving and analysis,

and my right brain for intuition and creativity,

I apply tools and techniques of design to create functional and delightful products.

To me, great design improves lives,

brings meaning,
Kristina Marrero | 305.281.9096 | knmarrero@gmail.com

and empathizes with the user.

I strive to uncover unmet opportunities, frame the problem and innovate solutions

to meet the needs of the user, all with the iterative design process.

Identify the Build
Brainstorm Mock-ups Test Prototype
Problem

W rin g it Out..................................... 4
Sing le Garment Wringi ng Aid e
5 Me mber Tea m | 8 We ek Duratio n | Spring
‘09

C lea ni ng with M ag ic................. 10
At th e Ga s Pu mp.......................... 6 Walt Di sn ey Va cu u m Clean er
Erg ono mic Fue l Noz zle 5 Wee k Du rat ion | Wint er ‘09
4 Me mber Tea m | 8 We ek Duratio n | Spring
‘07
A Speedy, Stylis h
Un de r th e Sea................................ 8 Brea kfast.......................................... 12

Kit ch en Appli an ce Lin e
Dol phin Enrichm ent Toy 2 Wee k Du rat ion | Wint er ‘10
5 Me mber Tea m | 15 We ek Duratio n | Fall ‘08
From A rt to Pa rt............................ 14
Injectio n-M old ed Re cord Pl ay
Thin king for Asse mbly............. 16 3 M em be r Tea m | 7 Wee k Duer
rat ion | Wint er ‘10
Manufacturi ng a Coffee Table
2 Week Duratio n | Fall ‘09

From My Sket chbook................. 17
Assortm ent of Sketch es

F ine Art............................................ 18
Ack nowledge ments.................... 19
Resu mé........................................... 20

Wring it Out.
Aft er han d-wash ing a garment,
ma ny peo ple find it cha llen gin g
and tim e-co nsu min g to wrin g out
excess wat er before han gin g it to
dry. The goa l of this proje ct was to
des ign a prod uct that give s use rs a
mechan ical advant age in wrin gin g
the ir garments.

R ef ra m in g th e Pro ble m
Aft er brai nsto rm in g, ou
r tea m foun d an
oppo rtu nity ga p an d pl
an ned to de sig n
a prod uct fo r wa shin g a
sin gle ga rm ent.
U se r ob se rvatio ns a nd
inte rv ie w s sh owed
th at dryi ng a ga rm ent
wa s actu ally
m ore diff icult a nd ti m
e- co ns u m in g th a n
wa sh in g on e, so we ch a
ng ed ou r fo cu s to
re flect th at ob se rvatio n.

Prototy pi n g a n d N ext
St ep s
Ou r tea m created a se rie
s of m ock- up s
fo r us er te sti ng an d ev
al uatio n. Te sti ng
re su lts sh owed th at w rin
gi ng wa s still
th e m ost ef fe ct ive m et ho
d. Ou r propos ed
de sig n m ak es th e w rin
gi ng m ot ion
ea sie r by se cu rin g th e
ga rm ent with
cl a m ps an d a st able fo
ot ba se.

Early testing showed that the prototype removed up to 45% of
the water in the garment in under fifteen seconds of use.

At the Gas Pump. Shifter Mock-Up

Fu el nozzles are cu mbers om e
sa
de vices, yet a ny on e wh o drive
h
ca r mu st fre qu ently int era ct wit
th e m. Th e goal of th is project
wa s to de sig n a nozzle th at is
re
erg on om ica lly su pe rio r a nd mo
us er- fri en dly th a n th e ex ist ing

de sig n.
Handle Mock-Up

B uildin g M oc k-U ps
Inte rvi ew s a nd ob se rvatio
ns pro ve d us ers
are m ost co ncern ed with im
pro vin g bo th
th e cle a nli ne ss of th e fu el
ha nd le a nd
th e fu nctio n of th e auto m
at ic fu eli ng
sy ste m. Us ers wh o te ste d
Trigger Mock-Up fo ur m oc k- up s
ag reed th e trigg er a nd th
e sli de r we re
Slider Mock-Up th e m ost int uit ive fu nctio ns
to in clu de on
th e ne w fu el nozzle.

Pro po se d D es ig n
Th is de sig n in co rp orate s bo
th th e sli de r a nd
trigg er fu nctio ns. Th e trigg
er fu nctio n is
fa m ilia r a nd ea sy to us e,
wh ile th e sli de r
fu nctio n allow s on e- ha nd ed
op eratio n a nd
auto m at ic fu eli ng. Th e up
dated nozzle
m ai nt ai ns th e int ern al fu
nctio n of th e cu r-
rent m od el wh ile im pro vin
g us a bilit y with
th e sli de r fu nctio n.

Under the Sea.
ho locat ion
D olp hi ns ra rely us e th eir ec
a nd ne ed
sig na lin g in a n a qu ariu m
th eir da ily
ente rta in m ent in betwee n
th is project
pe rfo rm a nces. Th e goal of
ic u nd erwat er
wa s to de sig n a n auto m at
es th e do lp hi ns
de vice th at bo th sti m ul at
m ent.
a nd en riche s th eir environ

T he d ev ice sati sf ie s th
d es ig n re qu ire m ents: e fo llo w in g
- D et ects do lp hi n echo
locat ion wa ve s as a n in
- Tra ns m its th e in put to put
sig na l th e op en in g
a nd clo sin g of a va lve
- R elea se s ai r fro m a
re se rve ta nk to ex pe l bu
- In de pe nd ently ho us es bble s
electro ni cs a nd po we r su
pp ly

Preliminary Cover

Co m po ne nt D es ig n
to ty pe
Th e oute r do m e of th e pro
nt s fro m
sh iel ds th e in ne r co m po ne
ae sth et ic fo r
do lp hi ns a nd pro vid es a n
m po ne nt s lie
th e de vice. Th e int ern al co
ble we ight
on a pl a na r su rfa ce fo r sta
res th e ai r
di strib ut ion. Th e ba se se cu Preliminary Systems Layout
ne nt s.
ta nk a nd ele ctron ic co m po

M at eria l Se le ct io n
M at eria l se lectio n so ftwar
e id entif ied
fiberg la ss fo r th e oute r do
m e fo r its
du ra bilit y a nd ad ap ta bilit
y to a m arin e
environ m ent. It also id en
tif ied 6061
Al u m in u m Alloy fo r th e ba
se fo r its
du ra bilit y a nd co rro sio n res
ist a nce.

Cleaning with Magic.
s to de sig n
Th e goal of th is project wa
g th e sty le
a we ll- kn ow n produ ct us in
fin al
of a n ex ist in g bra nd. Th e
alt D isn ey
de sig n in co po rat ed th e W
y of a
bra nd int o th e fu nctio na lit
po rta ble va cu u m cle a ne r.

Be fo re brai nsto rm in g, it wa
s ne ce s-
sa ry to a na lyz e th e fe at ur
es of a
po rta ble va cu u m cle a ne r.
Th e ae s-
th et ics are in sp ired by th e
cla ss ic
M ick ey M ou se hat in th e
fe at ure
fil m, Fa nt as ia .

du ct po si-
B ra nd pe rso na lit y a nd pro
rm in e th e
tio ni ng m ap s he lpe d dete
th e Walt
de sig n di rectio n. Alth ou gh
ltu ral
D isn ey bra nd ha s a va st cu
” a nd
inf lu en ce, th e wo rd s “si m ple
cu s th e
“m ag ica l” he lpe d bett er fo
sth et ics.
de sig n arch ite ct ure a nd ae

ve s th e
Th e Walt D isn ey bra nd gi
nd ly ae s-
de vice a fu n a nd kid-f rie
a ny liv in g
th et ic. Th e de sig n m ak es
m ore
roo m or bedroo m tidier a nd
m ag ica l.

A Speedy, Stylish Breakfast.
m ed
Th is creative ex erci se ai
e of
to de ve lo p a prod uct lin
ia nces
co u nt erto p kit ch en appl
u nt
fo r Fra nces ca, a n acco
qu ic k
ex ecut ive w ho ne ed s a
ery
a nd m obile brea kfast ev
m orni ng.

Co ncep t D evelop m ent
Fra nces ca ’s origi na l produ
ct lin e co ns ist ed
of a co ffe e m ak er, a toaste
r, a sin gle- se rve
blen de r a nd a wate r filte
r pit ch er. Th rou gh
id eatio n sk et ch in g a nd ad
dit ion al res ea rch of
th e pe rso na ’s wa nt s a nd ne
ed s, th e produ ct
lin e wa s red uced to a co ffe
e m ak er a nd a
toaste r, two appli a nces th
at ca n suff ici ently
prepare brea kfa st in u nd er
th ree m in ut es.
F inal Design Sketches

Persona

Francesca Parker
Background

Age 33, single Creatin g a Pe rso na
Kellogg MBA Graduate
Account Executive/$75,000/yr Fra nces ca is a statu s-o rie nte d
wo ma n wh o
Leading-Edge Electronics User as pires to be co me CEO at he r
pla ce of e m-
Loves Hi-Fashion plo ym ent. Sh e spe nd s ove r ten
ho urs at wo rk

eve ry da y, a nd tra vels at lea st
on ce a mo nth
for bu sin ess. Every nig ht, sh e
co me s ho me to
a lof t in th e he art of do wntow
n.
He r tim e is va lua ble, esp ecial
ly in th e mo rn-
ing. Af ter wo rki ng out for 45
mi nute s,
Fra nces ca tri es to pre pa re a sim
ple a nd
mo bile bre akfast. Fra nces ca ap
pre ciate s a nd
ca n aff ord hig h-e nd, qu ality pro
du cts. Sh e
live s a stress fu l, fast-paced life
, so sh e wa nts
th e produ cts sh e ow ns to be qu
ick a nd ea sy
to us e.

From Art to Part.
s to de sig n a
Th e goal of this project wa
th th e pl astic
pa rt to be m an ufa ctu red wi
Ou r fin al pa rt
inj ectio n m oldin g proce ss.
er m od eled
wa s a six-p iece record pl ay
tu rnt able. Fro m
afte r th e fa m ou s Te ch nics
d th e pa rts an d
in iti al sk etche s, we m od ele
g CAM progra m
de ve loped a m an ufa ctu rin

in Un igrap hics N X 5.0.

Th ere we re ve ry fe w dif ficult
ite s du rin g
th e produ ction proce ss. Th
e two m old s
we re m od eled with draft an
d sa nd ed afte r
m an ufa ctu rin g to en su re ea
se of rem oval of
ea ch pa rt.

Th e record pl ay er ha s a sh
ift in g equa liz er, a
rot at in g powe r kn ob an d a
bi ax ia l rot at in g
ne edle. This de sig n wo n fir
st pla ce a m on g
11 tea m s.

Thinking for Assembly.
Th is brief project fo cu se d
on de sig ni ng a
co ffe e ta ble fo r ea sy m a nu
fa ct urin g a nd
asse m bly. I fo cu se d on ho
w to atta ch th e
to p a nd bo tto m co m po ne
nt of ea ch ta ble
leg, as we ll as ho w th os e
pie ce s co ul d be
bo th ch ea ply m a nufa ct ured
a nd ea sily as-
se m bled.

From My Sketchbook.


1

4
5
2
3

6

Fine Art. Acknowledgements.
On Prev iou s Pa ge:
St ud ents Fa cu lty
1. H eat, 12” x 12”
Ro be rt B row n B ru ce A nk en m a n
Acry lic on ca nvas
Le ah Ca rls on Co nra d Albrecht-B ue hle r
2. Gree d, 16” x 20”
St acy Be nja m in

Acry lic on ca nvas Sa ra h Co pp ola
Eva n D ick ers on-R us a n A nd rew Fa lk ow sk i
3. Se lf-Po rtrait, 16” x 20”
Suja n D os hi Walt er H erbst
Oil on ca nvas
W illi a m Fa n Pe nn y Hirs ch
4. Cu rio us ity, 18” x 24”
A nd rew H utto n Greg H old erf iel d
Oil on ca nvas
Jo sh ua La u A nn M cK en na
5. F loatin g, 18” x 24”
Oil on ca nvas St acey M os ley
6. A Wom a n’s Wort h, 12 H en ry Petra sh
” x 12”
Oil on ca nvas A nd rew Po tt ebau m
Jo sh ua Rive ra
A ug ustu s Ts ai

Kristina Marrero
Throughout my time at Northwestern, I have learned to use both my left brain for problem- solving and analysis and my right brain for intuition and cre-
ativity. My training in violin performance and painting has also enhanced my artistic abilities. As a whole-brain engineer and a human-centered designer,
I strive to uncover opportunities, frame the problem and innovative the solutions to meet the needs of the user.
education
NORTHWESTERN UNIVERSITY, Evanston, IL, Graduating June 2010
B.S. Manufacturing and Design Engineering, Certificate in Engineering Design
Major Program GPA: 3.22/4.0
GM Summer Scholar, Summer 2006

NEW WORLD SCHOOL OF THE ARTS, Miami, FL, Graduated May 2006
Instrumental Music Magnet Program, Violin

design experience
THE SEGAL DESIGN INSTITUTE, Evanston, IL
Engineering Design Intern, Summer 2009-Present
• Collaborated with the Rehabilitation Institute of Chicago (RIC) to design rehabilitative devices for stroke survivors
• Corresponded with RIC clients to conduct user testing and gain feedback

Independent Study Projects, Fall 2009-Present
• Studied principles and methods of industrial design with Professor Walter Herbst, IDSA, founder and chairman of HLB,
and Professor Greg Holderfield, IDSA, formerly of Leo Burnett

Northwestern Organization of Design Engineers (NODE), Spring 2008–Present
• Promoted design thinking by coordinating quarterly design challenges for students

Human-Centered Design Courses, Winter 2007–Spring 2009
• Devised a portable drying mechanism for a single garment load
• Designed an underwater device to stimulate dolphins and enrich their aquarium environment
• Designed a portable vacuum cleaner using the Walt Disney brand’s style and essence
• Proposed an ergonomic redesign for the fuel nozzle

SABIC INNOVATIVE PLASTICS, Ottawa, IL
Utilities Co-op, Summer 2007
• Reduced brine usage by 50% in Boiler House; installed softener resin cleaner pump
• Devised an action plan to optimize performance and reliability on demineralizer trains

additional experience
CITY OF EVANSTON, NOYES CULTURAL ARTS CENTER, Evanston, IL
Cultural Arts Intern, Winter 2008-Summer 2009
• Assisted in planning and promoting the City of Evanston’s summer programming: the Ethnic Arts Festival,
the Lakeshore Arts Festival and the Starlight Concert Series

REPNATION, Evanston, IL
Starbucks Brand Ambassador, Fall 2008
• Promoted a new line extension for Starbucks doubleshot Energy + Coffee and collaborated with
campus officials and policies to effectively build awareness for Starbucks
• Executed and managed large promotional events with attendance upwards of 300 people

skills and activities
• Knowledgeable in Microsoft Word, Excel, PowerPoint, Outlook; Adobe Photoshop and InDesign; MATLAB;

NX 5.0; Solidworks; CES Material Software; Conversational Spanish
• Philharmonia Orchestra, Northwestern’s symphony orchestra for non-music majors, Fall 2006-Fall 2009
• Dance Marathon, Largest student-run philanthropy in the nation, Fall 2006-Present
• Zeta Tau Alpha Fraternity, Charter Member, Philanthropy & Fundraising Chair, Spring 2007-Present
• A&O Productions, Northwestern’s premier programming organization for concerts, speakers and films
Corporate Relations Director, Street Team Member, Fall 2007- Present
• Mayfest Productions, Northwestern’s Spring programming responsible for their annual Dillo Day music festival,
Special Events Director, University Relations Committee, Spring 2007-Fall 2009

references
Walter Herbst Anand Raghu Stacy Benjamin
Director of MPD program Mixing II Building Engineer Senior Design Engineer
Clinical Professor SABIC Innovative Plastics Northwestern University
Northwestern University Ottawa, IL 61350 2133 Sheridan Rd. B-105
847-467-3375 815-433-7535 Evanston, IL 60208
w-herbst@kellogg.northwestern.edu anand.raghu@sabic-ip.com 847-491-2013
s-benjamin@northwestern.edu

Ellen Worsdall Bruce Ankenman Greg Holderfield
Asst. Dean of Student Affairs Associate Professor Co-Director of MPD Program
McCormick School of Engineering Northwestern University Senior Lecturer
Northwestern University 847-491-5674 Northwestern University
847-491-5173 ankenman@northwestern.edu 847-491-2897
e-worsdall@northwestern.edu g-holderfield@northwestern.edu

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