1Classification of Materials
metals, ceramics, polymers, composites
2What are composites?
Fibers or fragments of a material are surrounded by a matrix
3What are the different kinds of composite materials?
Polymeric matrices, fiber-reinforced, and structural
4What are the types of polymeric matrices?
Thermoplastics and Thermosets
5What are the types of fiber-reinforced composite materials?
Continuous, short, and hybrid
6What are the types of structural composite materials?
Laminates and sandwiches
7What are some Different composite materials?
Carbon-carbon, carbon-ceramic, carbon-metal, and fiber-reinforced concrete
8What material(s) has high temperature strength properties?
Ceramics
9What material(s) has medium high temperature strength properties?
Metals
10What Material(s) has the lowest high temperature strength properties?
Polymers
11What material(s) has High thermal shock resistance properties?
Metals & Polymers
12What material(s) has medium thermal shock resistance properties?
Some ceramics
13What Material has low thermal shock resistance properties?
some Ceramics
14What material has high wear resistance properties?
Ceramics
15What material(s) has medium wear resistance properties?
Metal
16What material(s) has low wear resistance properties?
Polymers
17What material(s) has high hardness properties?
Ceramics
18What material(s) has medium hardness properties?
Metals
19What material(s) has low hardness properties?
Polymers
20What material(s) has High tensile strength properties?
Metals
21What material(s) have medium tensile strength properties?
Ceramics and polymers and some metals
22What material(s) has low tensile strength properties?
None
23What material(s) has high elastic modulus properties?
Ceramics
24What material(s) has medium elastic modulus properties?
Metals
25What material(s) has low elastic modulus properties?
Polymers
26What material(s) has high compressive strength properties?
Ceramics
27What material(s) has medium compressive strength properties?
Metals
28What material(s) has low compressive strength properties?
Polymers
29What material(s) has high density?
Metals
30What material(s) has medium desnsity?
Some Ceramics and some metals
31What material(s) has low density?
Polymers and some ceramics
32What material(s) has high toughness properties?
Metals
33What material(s) has medium toughness properties?
Polymers and some ceramics
34What material(s) has low toughness properties?
Some ceramics
35What material(s) has high corrosion resistance properties?
Ceramics
36What material(s) has medium corrosion resistance properties?
Some metals and polymers
37What material(s) has low corrosion resistance properties?
Some metals and polymers
38What processes are used to make carbon fiber?
PAN and Pitch process
39What is plain weave?
A crisscross weave where the horizontal(weft) yarn goes over and then under the vertical(warp).
40What is a twill weave?
When one weft goes over 2+ warps and then under
41How are twill weaves expressed?
In fractions to explain how they're woven. ex) 2x1, 3x1, 2x2, etc.
42What is a satin weave?
3+ wefts go over 1 warp or the other way around. (1 weft over 3 warps)
43What are Amorphous polymers?
molecules that are randomly tangled, soft and rubbery above transition temps, glassy below transition temps.
44What are some examples of amorphous polymers?
ABS and PEI
45What are Semi-crystalline polymers?
Polymer with crystalline & amorphous regions and Higher chemical resistance and thermal stability
46What are some examples of semi-crystalline polymers?
PLA, iPP, PPS, and PEEK
47What industries do composites have applications in?
Aviation, Aerospace, Automotive, Maritime, and sports
48What aircraft has composites being 50% of its' weight?
Boeing 787
49What aircraft has composites being 25% of its' weight?
Airbus A380