Concept Evaluation and AHP UPDATED

Concept Evaluation and AHP UPDATED - C hapter 9 Chapter 6...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 9 Chapter 6 Concept Selection (Pugh) Analytical Hierarchial Process (AHP)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What I now know. .. What is Engineering Design Steps in the design process Project Project Description Team Formation Team Roles Stages of Team Dynamics Project Management Design Team Calendar Work Breakdown Structure (WBS) Design Structure Matrix/Activity Network Analysis Gantt Chart Responsibility Assignment Matrix (RAM) Working Agreement Defining the Problem Assumptions, Biases and Analyzing Key Phases Gathering Information Design Review Conceptualization Brainstorming, Synetics, SCAMPER TRIZ
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Pugh Concept Selection Method 1. Choose the criteria by which the concepts will be evaluated Start with the Engineering Characteristics in you House of Quality Any information obtained from background research or design reviews 2. Formulate the decision matrix Take criteria from above and put them in rows. Take your design solutions/concepts and make them the column headings 3. Clarify the design concepts This method must be performed as a team Make sure that the team agrees on which are the best design solutions/concepts to test. You may add benchmarked products as possible solutions 4. Choose the datum concept Choose one of the best concepts for the first round. A poor choice of datum would cause all of the concepts to be positive and delay arriving at a solution. Mark the datum concept as DATUM 5. Run the matrix Each concept is compared to the datum. Is concept better (+1), worse (-1), or about the same (0) (not clearly worse or better). 6. Evaluate the ratings Sum all +1, -1, 0 ratings for each concept Establish a new datum and rerun the matrix Use the highest rated concept from the first round as datum. Eliminate the lowest rating concepts from this second round. The main intent of this round is not to verify that the selection in round 1 is but to gain added insight to inspire further creativity. 1. Establish the selected concept for improvement opportunities Once the best concept is identified, look at each criteria that performed worse than the datum. Ask
Background image of page 4
Pugh Selection Chart CRITERIA CONCEPT D A C B Cost 1 1 1 Added Functionality 0 0 -1 Simplicity of Design 1 0 0 Availability of Materials 1 -1 -1 Ease of Manufacturing 1 1 0 Ease of Assembly 1 1 -1 Ability to Prototype 1 0 1 Comfort -1 1 -1 Weight 1 0 -1 Aesthetics -1 0 -1 SUM 5 0 3 -4 D A T U M
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
W h a t i s t h e p r o b l e m with this method?
Background image of page 6
Analytic Hierarchy Process (AHP) • A problem-solving methodology for making a choice from among a set of alternatives • Builds upon the mathematical properties of matrices for making consistent pair-wise comparisons • Important property of matrices is that their principle eigenvector can generate legitimate weighting factors • Mathematically sound and intuitively correct
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Weighting: Analytical Hierarchical Process (AHP) A B C D Total Weight A B C D 1.00 0.33 (1/3) 3.00 1.00 5.33 0.22 (5.33/24.53)
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/04/2010 for the course MSE 4714 taught by Professor Manuel during the Spring '10 term at University of Florida.

Page1 / 30

Concept Evaluation and AHP UPDATED - C hapter 9 Chapter 6...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online