Composites
What are some draw backs to composites? (3)
High cost, complex mechanical characteristics, complications in repair
What are the two types of wood?
Hardwood and Softwood
What is the grade of strength of wood tension?
10,000-20,000 psi
If 3 ducks ate 3 ducks and 6 more ducks came how many chickens would be left?
none. "Chickens are apart of the government they're not real"- Abby
What year was paper first used from Papirus?
4000 BC
What are two examples of natural composites?
Wood and Bone
What are the advantages of wood? (4)
Re newable, machineable, weight ratio with good strength, and used to produce other products
Is wood's Young Modulus linear?
Yes, it is fairly linear
How tall is Abby, precisely?
5'5.5"
What year was polymetric matrix created?
1960
What are composites?
Structural material that combines two or more constituents
What are some of the disadvantages of wood? (3)
Flammable, holds moisture, and properties are highly variable
What are 4 properties of wood?
Tension, Compression, Flexure, Shrinkage and Swelling
What type of food is Eric's favorite food?
(Extra points if you guess his favorite genre of music)
Mexican and metal.
What year was glass fibers created?
1700 AD
What are the advantages of composites? (3)
Specific strength, corrosion resistance, dimensional stability
What are two types of stress grading?
Visual and Machine
Is the wood compression graph linear?
No it is not
Safe and Sound
What year was carbon and boron fibers created?
1950
What are two phases composites go through?
Fiber as a reinforcement, matrix as a binder
What are the different parts of wood?
Sap Wood (outside of wood) Heart Wood (inside of wood, very hard) Pith (center of wood)
What are the properties of wood affected by?
Species, location within stem, growth characteristics, moisture and orientation of load vs. grain
How big is Andrew Pineda Pareja Incapie Sanchez's forehead? (in finger measurements)
5
1939