Liddo's review

what are the three categories of composites?

• CMC, MMC, and PMC

• FRP, GFR, and Kevlar

• Nylon, Kevlar, and graphite

• None of the above

Which type of polymer exhibits the most cross- linking?

• Elastomers

• Thermosets

• Thermoplastics

• Rubbers

Which of the following phases is NOT present in the iron-iron carbide (Fe3C) phase diagram?

• Ferrite

• Cementite

• Austenite

• Martensite

Of the following chemical bonds, which best suits a ceramic material?

• Ionic

• Metallic

• Van der Waals

• London forces

A monomer is

• a random collection of mollecules

• the smallest group of mollecules

• a group of molecules which forms an amorphous arrangement

• a single large molecule that comprises the basic structure of the polymer chain

• none of the above

Hardening non-ferrous metals, such as aluminum, require two-stage process known as

• quench and temper

• solution heat-treat and temper

• quench and aging

• solution heat treatment and aging

The phase diagram is the graph that shows the times and temperature at which the grain structure of steel changes from austenite to martensite or pearlite?

• true

• false

What type of polymerization is illustrated below?

• addition polymerization

• copolymerization

• condensation polymerization

• alternating polymerization

The formula used in the "Rule of Mixtures for Composites" to lower density and obtain better mechanical behavior is

• true

• false

Heat treatment refers to the heating and cooling operations requires to alter the properties of materials

• true

• false