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Developing a Decision-Making Matrix for Engineering Design Solutions

This guide explores the creation of a decision-making matrix to evaluate various design alternatives in engineering projects. Using specific criteria based on project requirements, we identify viable ideas for constructing models of puzzle pieces. We present six material options, including modeling clay and centimeter cubes, analyzing their costs, reusability, geometric precision, and other factors. Emphasizing the importance of an analytical approach over personal opinion, this matrix serves as a versatile tool throughout the design process, enabling informed decisions for optimal outcomes.

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Developing a Decision-Making Matrix for Engineering Design Solutions

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  1. Forging new generations of engineers

  2. Decision Making Matrix Taking a Close Look at Preliminary Ideas

  3. Develop a Decision Matrix A decision matrixis used to compare design solutions against one another, using specific criteria that are often based on project requirements.

  4. Identifying Ideas or Alternatives What material would be best for creating models of puzzle pieces?

  5. Idea #1 • Modeling Clay • Reusable • Readily available • Requires forming • Sticky • Imprecise geometry

  6. Idea #2 • Caramel Cubes • Cheap • Readily available • Pre-shaped • Sticky • Imprecise geometry

  7. Idea #3 • Dice • Expensive • Reusable • Require 2-sided tape • Moderately stable • Precise geometry

  8. Idea #4 • Centimeter Cubes • Cheap • Reusable • Interlocking • Protrusions • Precise geometry

  9. Idea #5 • Foam Blocks • Expensive • Reusable • Require 2-sided tape • Fall apart easily • Imprecise geometry

  10. Idea #6 • Sugar Cubes • Cheap • Readily available • Require glue • Have messy granules • Fairly uniform geometry

  11. Cost • Reusability • Geometry • Connections • Cleanliness • Resilience • Testability Identifying Criteria

  12. Development costs • Manufacturing costs • Company standards • Manufacturing capabilities • Safety • Function • Product life span • Development time • Size • Material costs Other Types of Criteria

  13. Question Scale Rank Scale Develop a Decision Matrix A grading scale must be developed to assign values for each criteria category.

  14. 2 1 2 2 1 1 10 1 1 1 2 3 1 2 12 2 2 4 1 1 2 4 17 3 2 2 2 4 4 4 22 4 2 2 1 1 2 3 14 3 1 3 1 4 3 3 17 2 Ranking The Alternatives

  15. The Right Decision: Idea #4 Design decisions should be based on analysis and logic; not personal opinion. A decision matrixis a design tool that may be used multiple times throughout a design process.

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