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EngineeringCollege ofSan Jose State University

Engr.10

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Welcome to E10A Freshman Engineering Experience

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The Freshman Challenge

A college freshman attending a recent football game,tried to explain to a senior citizen sitting next to him, whyit was impossible for the older generation to understand hisgeneration."You grew up in a different world, an almost primitive one " thestudent said,"The young people of today grew up with HDTV, cell phones

space travel, spaceships visiting Mars. We have nuclearenergy, electric and hydrogen cars, computers with light-speedprocessing...and, pausing to take another drink of soda.The Senior citizen took advantage of the break in the student'sexplanation and said,

"You're right, son. We didn't have those things when we wereyoung, so we invented them, designed them, testedthem, mass-produced them

Now, the question is

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The Freshman Challenge (cont.)

what areyougoing to do

for thenext generation?"

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Today's Discussion

What is Engineering?

What do Engineers do

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.

How did you selected engineering as your major?

1. Because of the engineering classes at my high school2. I did well in math or science.3. I heard that the salaries are higher that for other majors

4. My mother told me be an engineer or die.5. My father and brother are engineers.6. Ive always been curious as to how things work.7. I like to fix things

( students answers)

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Guess what?

Most engineers discover engineering in colleges anduniversities, since virtually no high school offers classesin engineering.

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$$$

Earnings for engineers vary significantly by specialty,industry, and education.

As a group, engineers earn some of the highest averagestarting salaries among those holding bachelorsdegrees.

U.S. Department of Labor

Bureau of Labor Statistics

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Starting Salary-2005 Survey-NAC&E*

Curriculum Bachelor's Master's Ph.D.Aerospace, $50,993 $62,930 $72,529Bioengineering/medical 48,503 59,667 Chemical 53,813 57,260 79,591

Civil 43,679 48,050 59,625Computer 52,464 60,354 69,625Electrical-onics-commun. 51,888 64,416 80,206Industrial/mfg. 49,567 56,561 85,000Materials 50,982Mechanical 50,236 59,880 68,299

Petroleum 61,516 58,000

*National Association of Colleges and Employers

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How do I learn more about engineering?

1. E10 classa. Hands on projectsb. Team work environment.

c. Professors from various engr. disciplines2. Your classmates*3. Student chapters of a professional society.4. Your professors5. Other practicing engineers.6. Visiting engineering companies.7. Apply for student internships during summer

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The Magic We Call Engineering

.

IdeaProduct/service

ENGINEERING PROCESS

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An overview of the Engineering Process

.

idea Product

Requirements ModelingEvaluation

Specs Tooling

ManufactureDesign DevelopConcept

ID Problem

Science, Mathematics,Computers

Team work,

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Science/Math vs. Engineering

Science: Study the laws of natureGenerates new knowledge.

Engineering: Converts science into technology

and technology into usefulproducts.It requires creativity, judgment,imagination, experience,common sense.

What About Math.: One of the bestengineering tools

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Problem Solving vs. Problem Solving

When a student solves a problem, he/shewill first read the chapter and then attemptthe solution. (right???)

The engineer however rarely has sufficient priorinformation for the problem(s) he/she has tosolve.

A major step of problem solving is ingathering appropriate information.

[ Life Long Learning ]

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Engineers Solve Problems

Some examples of engineering problems:

Cars: 1. Safety-crash test2. Pollution3. Gas consumption4. Metal and tire recycling.

Computers: 1. Battery life and safety (laptops)2. Recycling of special components3. Size, weight, cost, capacity, speed.

Non invasive medical diagnostic equipment.

Traffic congestion.

Can you think of other engineering problems

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The Engineers Balancing Act

Example:The design of a laptop must meet the following:

Light weight --- Large screen

Small in size --- Comfortable key board.Reduced price --- Many functions (DVD, Phone, etc.)

The engineer must find an optimum design to satisfy

the given constraints.

[ Constraints and optimization ]

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The Magic We Call Engineering

.

IdeaProduct/service

ENGINEERING PROCESS

Do we recall this?

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It is important to understand that engineeringdesign is a process.That is a series of inter-depended operations eachone with a set of input and output requirements.

Basic process step:

Input Output

The Engineering Design Process

Value Add

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The Basic Elements of a Process

Manpower (people with skills, team work)

Material (raw material, components)

Machinery (tools, etc.)

Methods (procedures for test, assembly etc.) Money (investment to start with)

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The Story of Engineering Knowledge

Once upon a time.there was a gifted engineer whohad retired after 35 years. Several years later, hiscompany contacted him regarding an impossibleproblem they were having with their multi-million dollarsystem.

The engineer reluctantly took the challenge and afterhe spend several hours studying the system hardware,he marked a small x with a marker, on a particularcomponent and told management to replace it.

The company received a bill for $50,000.

Management immediately asked for an itemizedaccounting for the charges.

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The Engineers Itemized Accounting

One black marker...... $1.00

Knowingwhere to place it.$49,999

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What science tell us about magnets?

Magnetic poles

Magnetic field

Direction
http://cipco.apogee.net/foe/graphics/bmag.jpg

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Science

A current carrying coil

generates a magnetic field
http://upload.wikimedia.org/wikipedia/commons/0/07/Electromagnetism.png

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Science: And the reverse is true

When a coils is brought

into a magnetic field,

current will be detectedthrough the coil
http://upload.wikimedia.org/wikipedia/en/a/a6/Solenoid.svg

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What do these products have in common?

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Creativity, Imagination & theStart of a Multibillion$$$ industry

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Read/Write head on the surface of a magnetic disk

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From Science to Engineering via Imagination

File Save Write operation

( The current in the coil of the write headelement magnetizes portions of the disk

surface)

File Open Read Operation

(the coil of the read head element passesover the magnetized surface and readsthe signal)

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So What Engineers Do?

Engineers apply the theories andprinciples ofscience and mathematics

to research and developeconomicalsolutionsto technical problems.

U.S. Bureau of Labor Statistics

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The Engineering Design Process. (text)

1.Identify the need

2. Define the Problem

3. SearchSketch 4. Constraints

5 Criteria6. Alternative solutions

Model 7. Analysis

8. Decisions

9. Specifications

Build 10. Communication

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There will be a more detailed discussionon engineering design later on in thesemester.

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What Did We Discuss Today?

Engineering transforms ideas into useful products. Your classmates are a good source of information.

Salaries for engr. majors are higher that other majors.

Science study the law of nature.

Engineering converts science into technology / productsthrough creativity, imagination, judgment, experience.

Engineering transforms ideas into useful products.

Engineers design products within a set of constraints

Engineering is a process that includes people, materials,machinery, methods, money.

Engineers are committed to Life Long Learning.
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