NINE STEP MODEL OF DESIGN PROCESS

Satisfactory Essays
Recap of what we covered last class
Nine Step Model of Design Process
1. Recognizing the need
2. Defining the problem
3. Planning the project
4. Gathering information

5. Conceptualizing alternative approaches
6. Evaluating the alternatives
7. Selecting the preferred alternative

8. Communicating the design
9. Implementing the preferred design
1
Hyman/Chapter 1-Introduction to Engineering Design/Rev. 6/24/02

Lecture 3

Problem Formulation

Chapter 2

1. Recognizing the need
2. Defining the problem

3. Planning the project
4. Gathering information
5. Conceptualizing alternative approaches

6. Evaluating the alternatives
7. Selecting the preferred alternative
8. Communicating the design
9. Implementing the preferred design
Dr. Mojahid F. Saeed Osman/ISE391/112

3

Formulating Design Problems
(from 9-step model of design process)

• Step 1 - Recognizing the Need
• Step 2 - Defining the Problem
– Goals
– Objectives
– Constraints

B.Hyman/ Fundamentals of Engineering Design Chapter2/Rev.6/26/02

4

Formulating Design Problem
• “The ABET” definition of engineering design states that any engineering design must satisfy desired needs”

5

• Step 1 - Recognizing the Need
• Step 2 - Defining the Problem
– Goals
– Objectives
– Constraints

B.Hyman/ Fundamentals of Engineering Design Chapter2/Rev.6/26/02

6

Recognizing the Need
• Describes a current situation that is unsatisfactory.
• Should be written in a negative tone
• Establishes improvement in current situation as the ultimate purpose of the project.
• Implies that:
– We know who is the customer/client is; and
– The customer/client knows what their need is

Hyman/Chapter 2-Problem Formulation/Rev. 6/26/02

7

Recognizing the Need -Automobile Bumper
Problem
• Design an improved bumper for our new passenger car
– There is too much damage to bumpers in lowspeed collisions

Hyman/Chapter 2-Problem Formulation/Rev. 6/26/02

8

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