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(JKA) 2006 1
EngineeringCollege of
San Jose State University Engr.10
Welcome to E10A Freshman Engineering Experience
(JKA) 2006 2
EngineeringCollege of
San Jose State University Engr.10
The “Freshman” ChallengeA college freshman attending a recent football game, tried to explain to a senior citizen sitting next to him, why it was impossible for the older generation to understand hisgeneration."You grew up in a different world, an almost primitive one " the student said,"The young people of today grew up with HDTV, cell phones space travel, spaceships visiting Mars. We have nuclear energy, electric and hydrogen cars, computers with light-speed processing...and”, pausing to take another drink of soda.The Senior citizen took advantage of the break in the student's explanation and said,
"You're right, son. We didn't have those things when we were young, so we invented them, designed them, tested them, mass-produced them
Now, the question is……
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EngineeringCollege of
San Jose State University Engr.10
The “Freshman” Challenge (cont.)
what are you going to do
for the next generation?"
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EngineeringCollege of
San Jose State University Engr.10
Today's Discussion
• What is Engineering?
• What do Engineers do
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EngineeringCollege of
San Jose State University Engr.10
. How did you selected engineering as your major?
1. “Because of the engineering classes at my high school”2. “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. “I’ve always been curious as to how things work.”7. “I like to fix things”
( “ “ students answers)
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EngineeringCollege of
San Jose State University Engr.10
Guess what?
Most engineers discover engineering in colleges anduniversities, since virtually no high school offers classes in engineering.
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EngineeringCollege of
San Jose State University Engr.10
$$$
• Earnings for engineers vary significantly by specialty, industry, and education.
• As a group, engineers earn some of the highest average starting salaries among those holding bachelor’s degrees.
• U.S. Department of LaborBureau of Labor Statistics
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EngineeringCollege of
San Jose State University Engr.10
Starting Salary-2005 Survey-NAC&E*
Curriculum Bachelor's Master's Ph.D. Aerospace, $50,993 $62,930 $72,529 Bioengineering/medical 48,503 59,667 —
Chemical 53,813 57,260 79,591Civil 43,679 48,050 59,625Computer 52,464 60,354 69,625Electrical-onics-commun. 51,888 64,416 80,206 Industrial/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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EngineeringCollege of
San Jose State University Engr.10
How do I learn more about engineering?
1. E10 classa. Hands on projectsb. Team work environment.c. Professors from various engr. disciplines
2. 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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EngineeringCollege of
San Jose State University Engr.10
The “Magic” We Call Engineering
.
IdeaProduct/ service
ENGINEERING PROCESS
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EngineeringCollege of
San Jose State University Engr.10
An overview of the Engineering Process
.
idea Product
RequirementsModeling
EvaluationSpec’s Tooling
ManufactureDesign DevelopConceptID Problem
Science, Mathematics,Computers
Team work,
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EngineeringCollege of
San Jose State University Engr.10
Science/Math vs. Engineering
Science: Study the laws of nature Generates new knowledge.
Engineering: Converts science into technology and technology into useful products. It requires creativity, judgment,
imagination, experience, common sense.
What About Math.: One of the best engineering tools
(JKA) 2006 13
EngineeringCollege of
San Jose State University Engr.10
Problem Solving vs. “Problem Solving”
When a student solves a problem, he/she will first read the chapter and then attemptthe solution. (right???)
The engineer however rarely has sufficient prior information for the problem(s) he/she has to solve.
A major step of problem solving is in gathering appropriate information. [ Life Long Learning ]
(JKA) 2006 14
EngineeringCollege of
San Jose State University Engr.10
Engineers Solve “Problems”
Some examples of engineering problems:
Cars: 1. Safety-crash test 2. Pollution 3. Gas consumption 4. Metal and tire recycling.
Computers: 1. Battery life and safety (laptops) 2. Recycling of special components 3. Size, weight, cost, capacity, speed.
Non invasive medical diagnostic equipment.
Traffic congestion.
Can you think of other “engineering” problems
(JKA) 2006 15
EngineeringCollege of
San Jose State University Engr.10
The Engineer’s Balancing Act Example:The design of a laptop must meet the following:
Light weight --- Large screenSmall 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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EngineeringCollege of
San Jose State University Engr.10
The “Magic” We Call Engineering
.
IdeaProduct/ service
ENGINEERING PROCESS
Do we recall this?
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EngineeringCollege of
San Jose State University Engr.10
It is important to understand that engineering design is a process. That is a series of inter-depended operations each one with a set of input and output requirements.
Basic process step:
Input Output
The Engineering Design Process
Value Add
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EngineeringCollege of
San Jose State University Engr.10
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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EngineeringCollege of
San Jose State University Engr.10
The Story of Engineering Knowledge
• Once upon a time….there was a gifted engineer who had retired after 35 years. Several years later, his
company contacted him regarding an impossible problem they were having with their multi-million dollar system.
• The engineer reluctantly took the challenge and after he spend several hours studying the system hardware,
he marked a small “x” with a marker, on a particular component and told management to replace it.• The company received a bill for $50,000. • Management immediately asked for an itemized accounting for the charges.
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EngineeringCollege of
San Jose State University Engr.10
The Engineers Itemized Accounting
• One black marker …………...... $1.00
• Knowing where to place it….$49,999
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EngineeringCollege of
San Jose State University Engr.10
What science tell us about magnets?
• Magnetic poles
• Magnetic field
• Direction
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EngineeringCollege of
San Jose State University Engr.10
Science
• A current carrying coil
generates a magnetic field
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EngineeringCollege of
San Jose State University Engr.10
Science: “And the reverse is true”
• When a coils is brought
into a magnetic field,
current will be detected
through the coil
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EngineeringCollege of
San Jose State University Engr.10
What do these products have in common?
.
(JKA) 2006 25
EngineeringCollege of
San Jose State University Engr.10
Creativity, Imagination & the Start of a Multibillion $$$ industry
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EngineeringCollege of
San Jose State University Engr.10
Read/Write head on the surface of a magnetic disk
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EngineeringCollege of
San Jose State University Engr.10
From Science to Engineering via Imagination
• “File Save” “Write operation” ( The current in the “coil” of the “write” head
element magnetizes portions of the disk surface)
• “File Open” “Read Operation” (the coil of the “read’ head element passes
over the magnetized surface and “reads” the signal)
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EngineeringCollege of
San Jose State University Engr.10
So What Engineers Do?
• “Engineers apply the theories and principles of science and mathematics to research and develop economical solutions to technical problems.”
• U.S. Bureau of Labor Statistics
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EngineeringCollege of
San Jose State University Engr.10
The Engineering Design Process. (text)
1. Identify the need 2. Define the Problem
3. Search Sketch 4. Constraints
5 Criteria6. Alternative solutions
Model 7. Analysis 8. Decisions 9. SpecificationsBuild 10. Communication
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EngineeringCollege of
San Jose State University Engr.10
• There will be a more detailed discussion on “engineering design” later on in the semester.
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EngineeringCollege of
San Jose State University Engr.10
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 / products through 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.
