Materials Engineering Questions and Answers
What is a metal?
Answer: Most common element in the periodic table, and normally solid at room temperature.
An example of an _________ is Steel.
Answer: Alloy
What type of structure does a metal have?
Answer: Compact and crystalline atomic structure.
What is melting point and which property is it involved in?
Answer: The temperature at which an object changes to liquid form and it is involved with thermal properties.
Metal is an _______________ material?
Answer: Inorganic
What are the four types of materials ?
Answer: Metals, Ceramics, Polymers, Composites
List three types of ceramics
Answer: Magnesium Oxide, Clay, and Cement
Define Thermal Expansion
Answer: Thermal Expansion is how an object can change size when caught on fire.
What are nano sized cylinders of carbon ?
A. Nanopipes
B. Buckyballs
C. Nanotubes
D. Nanowires
C. Nanotubes
The light that is reflected (not absorbed) is what gives the object it's color. What is the question to this answer?
A. What are Electrical Properties?
B. How do Acoustical Properties determine how light waves interact with each-other?
C. How does light influence color?
C. How does light influence color?
What are polymers?
Answer: Materials that are made up of a long chain of small molecules that form a much larger molecule.
What are the two main types of plastics?
Answer: Thermoplastic materials and thermoset materials.
What are the three categories material engineers use for electrical properties?
Answer: Conductors, semiconductors, and insulators
What are conductivity and resistivity?
Answer: Conductivity is the measure of how well a material allows the flow of electricity, while resistivity is a measure of how well a material.
What factors can affect the permeability of a material?
Answer: Factors such as temperature and the intensity of a magnetic field can affect the permeability.
Flammability is the-
Answer: tendency an object has to catch on fire.
What is corrosion?
Answer: Reaction between the environment which leads to the breaking down of a substance. ex- metal rusting.
Rust is a form of ___________________.
Answer: Corrosion, specifically oxidation
why would an engineer want to be able to control chemical properties?
Answer: It makes substance suitable for certain jobs or conditions.
The main and most common examples of chemical properties are ____________ and ____________.
Answer: Corrosion and Flammability
What do Optical and Acoustical properties determine?
Answer: Optical and Acoustical properties determine how light and sound waves interact with different materials.
What are composites, and what are the two main categories?
Answer: Composites are materials that are made of two or more materials that are combined to make a stronger material. The two main types of composites are natural composites and synthetic composites.
What are chemical properties?
Answer: Chemical Properties are properties that are changed when a substance undergoes a chemical reaction.An objects ability to change forms or substances when undergoing the certain requirements.
Why do inventors and/or manufacturers do material testing?
Answer: They want to find out how much material is needed for that specific thing. It is also done to test the structure.
_________________ is the leader in developing procedures for testing materials.
ASTM Organization
What is Destructive testing? What is exerted on the material until it fails?
Destructive testing are tests that usually destroy a material or make it inoperable. Force is exerted until the object fails.
Why is destructive testing important?
It is important, because it measures how sturdy a material is and how much it would take to destroy it.
How small are nano particles?
Between 1 nano meter and 100 nano meters in size.
What are physical properties?
Physical properties are properties having to do with the five senses.
What education requirements do you need to become a materials engineer?
Bachelors degree in engineering, upper level math and science courses, and other courses depending on the college being attended.
What are some commonly used metals?
Iron, Copper, Titanium, and Aluminium.
Answer: Most common element in the periodic table, and normally solid at room temperature.
An example of an _________ is Steel.
Answer: Alloy
What type of structure does a metal have?
Answer: Compact and crystalline atomic structure.
What is melting point and which property is it involved in?
Answer: The temperature at which an object changes to liquid form and it is involved with thermal properties.
Metal is an _______________ material?
Answer: Inorganic
What are the four types of materials ?
Answer: Metals, Ceramics, Polymers, Composites
List three types of ceramics
Answer: Magnesium Oxide, Clay, and Cement
Define Thermal Expansion
Answer: Thermal Expansion is how an object can change size when caught on fire.
What are nano sized cylinders of carbon ?
A. Nanopipes
B. Buckyballs
C. Nanotubes
D. Nanowires
C. Nanotubes
The light that is reflected (not absorbed) is what gives the object it's color. What is the question to this answer?
A. What are Electrical Properties?
B. How do Acoustical Properties determine how light waves interact with each-other?
C. How does light influence color?
C. How does light influence color?
What are polymers?
Answer: Materials that are made up of a long chain of small molecules that form a much larger molecule.
What are the two main types of plastics?
Answer: Thermoplastic materials and thermoset materials.
What are the three categories material engineers use for electrical properties?
Answer: Conductors, semiconductors, and insulators
What are conductivity and resistivity?
Answer: Conductivity is the measure of how well a material allows the flow of electricity, while resistivity is a measure of how well a material.
What factors can affect the permeability of a material?
Answer: Factors such as temperature and the intensity of a magnetic field can affect the permeability.
Flammability is the-
Answer: tendency an object has to catch on fire.
What is corrosion?
Answer: Reaction between the environment which leads to the breaking down of a substance. ex- metal rusting.
Rust is a form of ___________________.
Answer: Corrosion, specifically oxidation
why would an engineer want to be able to control chemical properties?
Answer: It makes substance suitable for certain jobs or conditions.
The main and most common examples of chemical properties are ____________ and ____________.
Answer: Corrosion and Flammability
What do Optical and Acoustical properties determine?
Answer: Optical and Acoustical properties determine how light and sound waves interact with different materials.
What are composites, and what are the two main categories?
Answer: Composites are materials that are made of two or more materials that are combined to make a stronger material. The two main types of composites are natural composites and synthetic composites.
What are chemical properties?
Answer: Chemical Properties are properties that are changed when a substance undergoes a chemical reaction.An objects ability to change forms or substances when undergoing the certain requirements.
Why do inventors and/or manufacturers do material testing?
Answer: They want to find out how much material is needed for that specific thing. It is also done to test the structure.
_________________ is the leader in developing procedures for testing materials.
ASTM Organization
What is Destructive testing? What is exerted on the material until it fails?
Destructive testing are tests that usually destroy a material or make it inoperable. Force is exerted until the object fails.
Why is destructive testing important?
It is important, because it measures how sturdy a material is and how much it would take to destroy it.
How small are nano particles?
Between 1 nano meter and 100 nano meters in size.
What are physical properties?
Physical properties are properties having to do with the five senses.
What education requirements do you need to become a materials engineer?
Bachelors degree in engineering, upper level math and science courses, and other courses depending on the college being attended.
What are some commonly used metals?
Iron, Copper, Titanium, and Aluminium.
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