November 4, 2010DRILL

Write each question and answer.1. What is another term for a limit to the

design process?2. What are used to evaluate an engineer’s

design?

1. Constraint2. 4 Design Principles

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YESTERDAY’S HOMEWORK

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Pick a technological artifact that interests you.• What needs did this technology fulfill?• What resources were used to design and create

this technology?• What preceding technologies were necessary for

the development of this technology?• What innovative or inventive ideas were used in

the creation of this technology?

8 CONSTRAINTS on the ENGINEERING DESIGN PROCESS

1. Safety – is the product safe to use?2. Reliability – will it work consistently over time?3. Cost – is it affordable?4. Quality Control – does it meet customer requirements?5. Environmental Concerns – does it harm the natural or

human environment negatively? 6. Manufacturability – can it be made?7. Maintenance – how easily can it be maintained or upheld?8. Ergonomics – how efficiently can the human body utilize

it?

Clearly Defined Steps:1. Defining a problem2. Brainstorming3. Researching and generating ideas4. Identifying criteria and specifying constraints5. Exploring possibilities6. Selecting an approach7. Developing a design proposal8. Making a model or prototype9. Testing and evaluating the design, using

specifications10. Refining the design11. Creating or making it12. Communicating processes and results U3b-

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ENGINEERING DESIGN PROCESS

4 DESIGN PRINCIPLES used to EVALUATE DESIGN

• Design is the result of a formal, sequential process.• Design is driven by profit motive and market ($ or not).• Design is the result of goal-oriented research.• Designs must be continually checked, refined, and

improved.

Note:• Design problems seldom arise in a clearly defined

form.• Design requirements sometimes compete with each

other. U3a-L3

MATH

• Engineers:– Use the language of mathematics to express

mathematical ideas precisely– Analyze and evaluate the mathematical thinking and

strategies of others– Create and use representations to organize, record,

and communicate mathematical ideas– Select, apply, and translate among mathematical

representations to solve problems– Use representations to model and interpret physical,

social, and mathematical phenomenaU3a-L3

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EXTENSION ACTIVITY

Develop a brief (2-minute) oral presentation using Microsoft Powerpoint on one of the “Greatest Engineering Achievements of the Twentieth Century” that will address the following topics:

a. The need or desire that led to the projects.b. The resources (inputs) used to create the project.c. The personal characteristics of the people who planned

and built the project.d. The constraints that impacted the development of the

project.e. An analysis of the project based on the four design

principles.

http://www.greatachievements.org/greatachievements

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EXTENSION ACTIVITY RUBRIC

Assigned Oral Presentation Topics• LETTER your Engineering Achievement and number on Handout.

This is an individual project.

Greatest Engineering Achievements

A) Electrification-1 B) Automobile-2, 21C) Airplane-3, 22D) Water Supply and Distribution- 4, 23E) Electronics- 5, 24F) Radio and Television- 6, 25G) Computers-7, 26H) Agricultural Mechanization- 8I) Telephone- 9, 27J) Air Conditioning&Refrigeration-10K) Highways-11, 28L) Spacecraft-12 29

Assigned Oral Presentation Topics• LETTER your Engineering Achievement and number on

Handout. This is an individual project.

Greatest Engineering Achievements

M) High-perfomance Materials-13N) Internet- 14 O) Petroleum&Petrochemical Technologies-15P) Imaging-16, 30Q) Household Appliances-17, 31R) Health Technologies-18 S) Nuclear Technologies-19T) Laser and Fiber Optics-20

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POWERPOINT TIPS

Write these tips down!1.Make sure the color of background and color of

text are highly contrasted:

THIS IS GOODTHIS IS GOODTHIS IS GOOD

THIS IS GOODTHIS IS GOODTHIS IS GOOD

THIS IS BADTHIS IS BADTHIS IS BAD

THIS IS BADTHIS IS BADTHIS IS BAD

POWERPOINT TIPS

Write these tips down!2.Avoid looooong sentences and paragraphs by

using short bullets:

The purpose of the design process is to provide designers with a method of approaching problems. The design process always incorporates the seven inputs that ALL technology systems have in common, namely people, time, information, capital, machines and tools, materials, and energy. Also, the engineering design process is ALWAYS constrained by the 8 constraints, sometimes greater than others: safety, manufacturability, cost, ergonomics, environmental concerns, quality control, maintenance, reliability.

BAD:

POWERPOINT TIPS

Write these tips down!2.Avoid looooong sentences and paragraphs by

using short bullets:

Design Process:

• A method of approaching problems.

• Always includes seven inputs:

• People, time, information, capital, machines and tools, materials, and energy.

• Always 8 constraints:

• Safety, manufacturability, cost, ergonomics, environmental concerns, quality control, maintenance, reliability.

GOOD:

POWERPOINT TIPS

Write these tips down!

3. Just cover main “bullets” on screen.

4.Speak about the details.

5.Don’t get carried away with graphics and text font – make sure graphics are relevant!

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HOMEWORK

• Begin research on your power point presentation.

• If you need access to a computer, the computer lab in the library will be available.