January 7, 2011
MID-SEMESTER EXAM
• REVIEW
1. Friday – Comprehensive Test
2. Monday – Drafting
3. Tuesday – Drafting
• Midterm
• Wednesday - Drafting
• Thursday – Multiple-choice and Short Answers
• Friday – Make up
EX. REV.
EX. REV.
VALVES
PISTON
CONNECTING ROD
CRANKSHAFT
45
TOP
TOP
RIGHT
RIGHT
30-60
FRONT
FRONT
MATERIALS
TECHNOLOGY
IRON AGE
SOCIETY
RENAISSANCE
INFO. AGE
BRONZE AGE
BRONZE
STEEL
INDUST. AGE
A
D
B
C
C
Great Britain
1. Access to the sea and world markets.
2. Abundance of farmers willing to move to cities
and work in factories.
3. Developed practical use of science.
1. Loss of craft tradition.
2. Child labor.
3. Unhealthy working conditions.
1950
The general trend has been positive. This sector saw a
slow increase in workers from 1700 to 1900, then an
exponential increase from 1900 to 2000.
D
H
G
A
I
E
F
B
1.
2.
3.
4.
5.
6.
7.
8.
Safety – is the product safe to use?
Reliability – will it work consistently over time?
Cost – is it affordable?
Quality Control – does it meet customer requirements?
Environmental Concerns – does it harm the natural or human environment negatively?
Manufacturability – can it be made?
Maintenance – how easily can it be maintained or upheld?
Ergonomics – how efficiently can the human body utilize it?
1.
2.
3.
Creativity – able to think outside the box and create newly
Resourcefulness – able to meet situations and devise ways and means
Ability to think abstractly – holding complex mental images in mind
LINEAR
ROTATIONAL
1. Information
2. Materials
3. Time
4. Energy
5. Capital (Money)
6. People
7. Tools and Machines
Designs can ALWAYS be refined and improved.
1.
2.
3.
4.
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
1. Natural – found in nature
2. Synthetic – human-made
3. Composite – mixture of natural and synthetic
The systematic application of scientific, mathematical, and
technical principles that yields a tangible end product that
meets our needs and desires
Minimizing the likelihood of undesired outputs
A limit or restriction
Technology is a system because it is made up of
many parts, and these parts have a relationship to
each other and to the whole.
• Technology system:
GOALS
& Control
FEEDBACK
INPUTS
PROCESSES
GOALS
OUTPUTS
Start with:
Goes to:
Drives:
Start with:
Goes to:
Drives:
Gas tank
FLOW DIAGRAM
•
Write the following topics that will be
covered on the mid-semester exam.
1. Know the design process steps and their order
2. List and describe the 8 constraints on the
engineering design process.
3. List and define the 9 core technologies.
EX. REV.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Defining the problem
Researching and generating ideas
Identifying criteria and specifying constraints
Brainstorming
Exploring possibilities
Selecting an approach
Developing a design proposal
Making a model or prototype
Testing and evaluating the design, using
specifications
Refining the design
Creating or making it
Communicating processes and results
1.
2.
3.
4.
5.
6.
7.
8.
Safety – is the product safe to use?
Reliability – will it work consistently over time?
Cost – is it affordable?
Quality Control – does it meet customer requirements?
Environmental Concerns – does it harm the natural or
human environment negatively?
Manufacturability – can it be made?
Maintenance – how easily can it be maintained or
upheld?
Ergonomics – how efficiently can the human body
utilize it?
1.
2.
3.
4.
5.
6.
7.
8.
9.
Mechanical – Robot Arm
Structural – Chassis / External Frame
Electrical – High Voltage Powering Systems
Electronic – Computer Systems
Fluid – Wing Air Foil
Optical – Lights
Thermal – Temperature Contol Units
Biotechnology – Food Preparation
Materials – Metal, Synthetic Fibers, Plastics
Mechanical Technology
• The technology of putting together mechanical parts
to produce, control, and transmit motion.
Example applications:
•Gear systems in a car transmission,
•Brakes on a bicycle,
•Agitator in a washing machine,
•Latch on a door.
•Springs in vehicle shocks
U3c-L2
Structural Technology
• The technology of putting mechanical parts and
materials together to create supports, containers,
shelters, connectors, and functional shapes.
Example applications:
•Legs on a chair,
•City water tower,
•Swimming pool,
•Roadways and Bridges,
•Bicycle spokes
•Airplane wing,
•Satellite antenna disc.
U3c-L2
Electrical Technology
• The technology of producing, storing, controlling,
transmitting and getting work from electrical energy.
Example applications:
•Power plant generator,
•Flashlight,
•Electric motor in a can opener,
•Doorbell,
•Electric heater,
•Hair dryer.
U3c-L2
Electronic Technology
• The technology of using small amounts of electricity for
controlling; detecting; and information collecting, storing,
retrieving, processing and communicating.
Example applications:
•thermostat for controlling temperature,
•a metal detector,
•video tape recorder,
•computer,
•pocket calculator,
•telephone,
•radio,
•television.
U3c-L2
Fluid Technology
• The technology of using fluid, either gaseous
(pneumatics) or liquid (hydraulic) to apply force or to
transport.
Example applications:
•Air brakes on a truck,
•Tires on a car,
•Airfoils on an airplane,
•Warm-air heating ducts,
•Hydraulic jack,
•Plumbing in a school
•Hydro-electric dam
U3c-L2
Optical Technology
• The technology of producing light; using light for
information collecting, storing, retrieving, processing and
communicating; and using light to do work.
Example applications:
•Lightbulb,
•Light-emitting diode,
•Lenses to magnify or reduce,
•Laser speed detector,
•Laser compact disk,
•Fiber-optic telephone
communication,
•Laser cutting tools,
•Laser surgical instruments.
U3c-L2
Thermal Technology
• The technology of producing, storing, controlling,
transmitting and getting work from heat energy.
Example applications:
•Furnace,
•Hot water heater,
•Toaster,
•Insulation,
•Heat exchanger,
•Refrigerator,
•Hot air balloon.
U3c-L2
Biotechnology
• The technology of using, adapting, and altering
organisms and biological processes for a desired
outcome.
Example applications
•“Stain-eating” enzymes in
detergent,
•Bacteria “leaching” metals from
ore,
•Altering plant genes to produce
better crops.
•Oil-eating microbes used in oil
spill remediation
•Genetically-modified agriculture
U3c-L2
Materials Technology
• The technology of producing, altering, and
combining materials.
Example applications:
•Producing paper from wood,
•Producing aluminum from ore,
•Drilling holes in wood,
•Annealing to soften metal,
•Laminating wood.
U3c-L2
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