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Chapter 3 : Concept Generation and Evaluation - Coggle Diagram
Chapter 3 : Concept Generation and Evaluation
1. Concept Generation Method
Concept - idea that is sufficiently developed to evaluate the physical principles that govern its behavior
Problem Solver
Sensitivity
Fluency
Flexibility
Originality
Brainstorming
General usage in the language to denote any kind of idea generation
A well-done brainstorming session is an enthusiastic session of rapid, free-flowing ideas
Synectics
Direct Analogy
Fantasy Analogy
Personal Analogy
Symbolic Analogy
Biomimetic Design
Velcro fasteners
Honeycomb structures
Concept Map
Good for generating and recording ideas during brainstorming
Creativity Techniques for a Design
The motivation for applying any creativity technique to a design task is to generate as many ideas as possible
The team is identifying a smaller subset of ideas that can be developed into practical solutions
Functional Decomposition and Synthesis
Common strategy for solving any complex task
Decomposing must result in units that meaningfully represent the original entity
Functional Synthesis
Strengths
Weaknesses
Morphological Methods
Step 1: Develop concepts for each function
Step 2: for each function, list the means or methods to be used.
Step 3: Draw up the chart containing all the possible sub- solutions.
Step 4: Identify feasible combinations
2. Pugh’s Method for Evaluation
Selecting a Design
to evaluate the design alternatives with respect to each criterion
Decision Making
Challenges
Unconflicted adherence
Unconflicted change
Defensive avoidance
Hypervigilance
Vigilance
Good Decision
The objectives of a decision must be established first.
The objectives are classified as to importance.
Alternative actions are developed
Design Selection
Evaluation based on judgment of functional feasibility of the design
Evaluation based on assessment of technology readiness
Pugh Chart
1) Choose the criteria by which the concepts will be evaluated
2) Formulate the decision matrix
3) Clarify the design concepts
4) Choose the datum concept
5) Complete the matrix entries
6) Evaluate the ratings
7) Establish a new datum and rerun the matrix
8) Examine the selected concept for improvement opportunities