Screening and Scoring

CONCEPT SCREENING MATRIX

Success Criteria Reference Design A-

Chris

Design B-

Jay

Design C-

Aaron

Design D-

Nitisha

Design E-

Group

Stability 0 + + +
Minimal Blockage 0 0 0 0 0 +
Maintenance 0 +
Durability 0 + 0 +
Safety 0 0 + 0
Sum +’s 0 2 1 2 0 3
Sum 0’s 5 1 1 1 1 0
Sum -’s 0 1 3 1 4 1
Net Score 0 1 -2 1 -4 2
Continue? Reference Yes No Yes No Yes

During concept screening, each team members AEV design was evaluated for its stability, minimal blockage, maintenance, durability and safety. The original design was kept as a reference. A plus sign meant that the design was more positive to that specific characteristic than neutral or negative. Zero’s meant that that design was neutral in comparison to the reference model. A negative sign meant that the design did not meet that characteristic. After all designs were scored, the three vehicles with the largest net score were chosen to continue on to concept scoring.

CONCEPT SCORING MATRIX

Reference Design A-

Chris

Design B-

Aaron

Design E-

Group

Success Criteria Weight Rating Weighted Score Rating Weighted Score Rating Weighted Score Rating Weighted Score
Stability 20% 3 0.60 3 0.60 3 0.60 4 0.80
Minimal Blockage 15% 2 0.30 2 0.30 4 0.60 3 0.45
Maintenance 15% 1 0.15 2 0.30 3 0.45 2 0.30
Durability 25% 3 0.75 4 1.00 3 0.75 5 1.25
Safety 25% 2 0.50 2 0.50 3 0.75 4 1.00
Total Weighted Score 2.30 2.70 3.15 3.80
Continue? No No Yes/Develop Yes/Develop

Once the three AEV designs from concept screening were chosen, they then went through a concept scoring matrix. Each characteristic from concept screening was evaluated again, but on a percentage-based system this time. After each characteristic was converted into a decimal value (weighted score), the design’s weighted score would be added up. This time, the two designs with the highest weighted scores were chosen to be further continued for testing and developing. The designs chosen to be continued were Aaron’s design and the group design.

 

References: Carmen, AEV Resources Concept Screening & Scoring