1. Garri Processing Machine P07403: Sustainable Design and Product Development Track
Anne Froustet (IE), Coleman Glasgow (ME), Alissa Albert (IE), Joey Lawson (ME)
Guide: Dr. Taylor
Sponsor: Mechanical Engineering department

2. Project Background & Purpose
Garri, the staple carbohydrate of West Africa, produced from cassava roots
Time consuming and labor intensive process
Design and manufacture a machine to improve upon current processing methods
Our target customer is lower class families, making up approximately 30% of the Nigerian population.
Goal:To improve the quality of life for
approximately 8-million Nigerian families by
providing more efficient, economical methods for garri processing.

3. Customer Needs & Product Specifications
Reduce Peeling Time
 25% of original
Eliminate Reliance on Rented Grater
Affordable to Lower Class Families
 $30 USD
User Friendly
 75% min rating
Safe
 Barriers over sharp components
It takes a family of six approximately 2-4 days to process cassava roots, producing 50 kg

4. Selected Concept Peeler
Support System
Accommodates Larger Sizes
Torsion Spring
Prongs
Clamp

5. Peeler Strengths and Weaknesses
+ Fast
+ Easy operation
+ Simple/intuitive use
- Prongs
- Odd Shapes

6. Selected Concept Grater
Safety Shield
Chute
Clamp

7. Grater Strengths and Weaknesses
+ Safety
- Handle
- Bearings

8. Manufacturing & Assembly
Steel bar stock:
Drilling, welding
Steel can & cardboard tube
Adhesives, machine screws
Nylon bearings and handles

9. Prototype Testing Time Trials User Studies Product Comparison
Acquire parts from outside vendors/sources and manufacturers/tool shops
Time Trials
User Studies
Product Comparison

10. Peeler - Test Results
Design Specification: Target: 15 seconds / 6” cassava
Marginal: 30 seconds / 6” cassava

11. Peeler - Test Results
Force Required
to Operate
Intuitive Use
Product Preference
Design Specification: Target: 100% User Acceptance
Marginal: 75% User Acceptance

12. Grater - Test Results
Design Specification: Target: 30 seconds / 6” cassava
Marginal: 60 seconds / 6” cassava

13. Grater - Test Results
Force Required
to Operate
Intuitive Use
Product Preference
Design Specification: Target: 100% User Acceptance
Marginal: 75% User Acceptance

14. Improvements/Future Work
Peeler:
Hammock Tolerance
To-Scale Model
Prongs
Increase Tension (arm)

15. Improvements/Future Work
Grater:
Handle Radius
To-Scale Model
Sharper Cone/Custom
Accommodates Motor (Optional)
Address other processing methods involved in garri production

16. Acknowledgements
Much thanks to all those who assisted with and contributed to the progress of the Garri Processing project including the Mechanical Engineering Department, Dr. Edward Hensel, Dr. James Taylor, Eze Kamanu, and Maggie Masella.

17. Questions and Comments
Thank you!