• REVIEW

1. Friday – Comprehensive Test2. Monday – Drafting

3. Tuesday – Drafting

• Midterm• Wednesday - Drafting• Thursday – Multiple-choice and Short Answers• Friday – Make up

MID-SEMESTER EXAM

EX. REV.

January 7, 2011

EX. REV.

VALVES

PISTON

CONNECTING ROD

CRANKSHAFT

45 30-60

TOP RIGHT FRONT

TOP RIGHT 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

HGAI

E

FB

LINEAR ROTATIONAL

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?

1. Creativity – able to think outside the box and create newly

2. Resourcefulness – able to meet situations and devise ways and means

3. Ability to think abstractly – holding complex mental images in mind

1. Information 4. Energy 7. Tools and Machines

2. Materials 5. Capital (Money)

3. Time 6. People

Designs can ALWAYS be refined and improved.

1. Design is the result of a formal, sequential process.

2. Design is driven by profit motive and market ($ or not).

3. Design is the result of goal-oriented research.

4. 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 outputsA 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:

INPUTS PROCESSES

OUTPUTS

GOALS

GOALS

FEEDBACK& Control

Start with: Goes to: Drives:

Start with: Goes to: Drives:

FLOW DIAGRAM

Gas tank

• 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. Defining the problem2. Researching and generating ideas3. Identifying criteria and specifying constraints4. Brainstorming5. 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

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?

1. Mechanical – Robot Arm

2. Structural – Chassis / External Frame

3. Electrical – High Voltage Powering Systems

4. Electronic – Computer Systems

5. Fluid – Wing Air Foil

6. Optical – Lights

7. Thermal – Temperature Contol Units

8. Biotechnology – Food Preparation

9. Materials – Metal, Synthetic Fibers, Plastics

• The technology of putting together mechanical parts to produce, control, and transmit motion.

Mechanical Technology

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

U3c-L2

• 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.

Structural Technology

U3c-L2

• 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.

Electrical 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.

Electronic Technology

U3c-L2

U3c-L2

• 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

Fluid 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.

Optical Technology

U3c-L2

• 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.

Thermal Technology

U3c-L2

U3c-L2

• 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

Biotechnology

U3c-L2

• 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.

Materials Technology

input input input

input input

2. 3. 4.

5. 6.

EX. REV.

2.

input input

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inputinput

3.

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4.

input input

EX. REV.

5.

input input

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input

6.

input

EX. REV.