P15482: Breadfruit Shredder
and Grinder
Group Members:
Andrew Beckmann, Patrick Connolly, Brittany Griffin,
Samantha Huselstein, Alan Kryszak
Agenda
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Project Background
Problem Statement and Deliverables
Use Scenarios
Customer Requirements
Engineering Requirements
Project Plan
Project Risks
Project Background
● Haitian life
● Transportation
● Plentiful fruit in Haiti
o Highly wasted
o Highly nutritious
Problem Statement and Project
Deliverables
● Breadfruit needs to be preserved to make the season
more profitable.
● The goals of this project are to create a
breadfruit processor that will result in a
consistent quality flour.
● The project deliverables will be a working
prototype to shred and grind breadfruit
effectively.
Current State of Project
● Benchmarking
o Devices built by MET students
 Broke processing into 5 steps
o Food processors
o Flour mill
o Grater
Stakeholders
● Farmers in Haiti
o KGPB
● Sarah Brownell
o NPO
● Possible Investors
● Haitian Market
● Other 3rd world Farmers
Use Scenarios
Customer Requirements
CR#
1.1
Category
Feasibility
Requirements
Rank
Uses available
technology for
components
3
CR# Category
Requirements
Rank
4.1
Safety
Easy to sterilize
3
4.2
Safety
Provides barrier to
moving parts
3
1.2
Feasibility
Uses available
resources
9
4.3
Safety
Resistant to weather
3
1.3
Feasibility
Easily maintained
3
4.4
Safety
9
1.4
Feasibility
Can adapt to different
ground levels
Does not contaminate
food
1
5.1
Profit
High capacity
3
5.2
Profit
Processes breadfruit
quickly
3
5.3
Profit
Provides consistent
flour quality
3
5.4
Profit
Flour can be used for
baking
1
5.5
Profit
Flour can be used for
Foufou
9
6.1
Drying
Group
Specifications for size
of shreds (TBD)
9
6.2
Drying
Group
Provides consistency
of shred sizes
9
1.5
Feasibility
Minimizes water usage
9
1.6
Feasibility
Lasts for multiple
seasons
3
2.1
Cost
No energy cost
9
2.2
Cost
Low investment cost
9
2.3
Cost
Low maintenance cost
3
3.1
Ease of Use Has easy to follow
instructions
3
3.2
Ease of Use Requires little training
3
3.3
Ease of Use Could be used by adult
breadfruit farmer
9
3.4
Ease of Use Easy to store
1
3.5
Ease of Use Easy to transport
3
Rank Scale
9
Most Important
3
Somewhat
Important
1
Least Important
Engineering Requirements
ER# Source
Description
Metric
Direction
Target
Marginal
S1
1.1, 1.2, 2.3
Percent of components obtained in Haitian markets
Percent
Increase
100%
80%
S2
1.3,2.3,4.1,4.4,5.2 Time it takes to clean
Time
Decrease
10 mins
30 mins
S3
1.4
Accommodated mounting surface deviation
Inches
Increase
6in
0 in
S4
1.5
Amount of water used for cleaning
Bucket/day
Decrease
<1
2
S5
1.5
Amount of water used for operation
Cups/flour output
Decrease
0 cups
1 cup
S6
4.4
Materials in contact with food that are food grade
Percent
Increase
>95%
>75%
S7
2.1,1.2
Percent of power provided by manual labor
Percent
Increase
>95%
>75%
S8
2.2,2.3
Low cost materials
USD
Decrease
<100
<175
S9
1.2,1.3,1.5,2.3,4.1 Cost to Clean
USD
Decrease
>95%
>80%
S10 3.1,3.2,3.3
Simple instructions
% of pictoral instructions Increase
S11 3.2,3.3
Training time
minutes
Decrease
15
20
S12 3.3,5.2
Time operator can run operation without a break
hours
Increase
>1
>0.5
Engineering Requirements Cont.
S13
4.2,4.3
Materials that are corrosion resistant
Percent
Increase
>95%
>75%
S14
5.1,5.2
Shredder processing rate
breadfruit/hr
Increase
24
20
S15
5.1,5.2
Flour production rate
lbs/hr
Increase
5
3
S16
1.3,2.2
Initial Cost
USD
Decrease
$125
$200
S17
3.5
Time to be ready to transport
hours
Decrease
<0.5
<1.5
S18
3.1, 3.2, 3.3
Setup time
hours
Decrease
<1
<3
S19
3.4,3.5
Weight
pounds
Decrease
<75
<150
S20
5.1,5.2
Machine Capacity
breadfruit at a time
Increase
3
1
S21
4.2
Protection around sharp objects and moving
components
max gap size (inches)
Decrease
0.25
0.375
S22
1.3, 1.6
Survive Drop Test from table height
height (ft)
Increase
>3
>1
S23
1.3, 1.6
Shortest Lived part (excluding blade)
Analysis (years)
Increase
3
1
S24
2.3,1.3
Total cost of blades per year
USD
Decrease
<$20
<$100
House of Quality
House of Quality Continued
S1
S7
S12
S24
Project Plan
Risks and Concerns
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Finding a reliable breadfruit vendor (Spring and possibly Fall)
Receiving parts on time to meet project deliverables
Dryer MSD team missing deadline/requirements needed to proceed
Finding locally available materials to use for the shredder/grinder
mechanisms
Making a product durable enough for high usage.
Reliability of product in a harsh environment (rain, dust, etc)
Risk of injury due to blades/sharp edges on shredder
Risk of injury due to blades/grinders in the grinder
Risk of injury from exposed gears or mechanisms
Risk of injury from hand/finger entrapment in shredder or grinder
Questions?