full_materials_science_brainscape (1)

Question 1

What is Density?

Answer 1

The mass per unit volume of a material.

Question 2

What is Conductivity?

Answer 2

The measure of how easily electric charge or heat passes through a material.

Question 3

What is Thermal Conductivity?

Answer 3

The ability of a material to transmit heat through it.

Question 4

What is Electrical Conductivity?

Answer 4

The ability of a material to transmit electricity.

Question 5

What is Melting Point?

Answer 5

The temperature at which a material changes from solid to liquid.

Question 6

What is Boiling Point?

Answer 6

The temperature at which a material changes from liquid to gas.

Question 7

What is Viscosity?

Answer 7

A measure of a fluid’s resistance to flow. Example: Honey has high viscosity.

Question 8

What is Hygroscopicity?

Answer 8

The ability of a material to absorb moisture from the air. Example: Silica Gel, Salt.

Question 9

What is Strength?

Answer 9

The capacity of a material to withstand an external load without destruction.

Question 10

What is Elasticity?

Answer 10

The ability of a material to return to its original shape after deformation.

Question 11

What is Ductility?

Answer 11

The ability of a material to be stretched into thin wires. Example: Copper, Gold.

Question 12

What is Plasticity?

Answer 12

The ability of a material to undergo permanent deformation without rupture.

Question 13

What is Malleability?

Answer 13

The ability of a material to be hammered into thin sheets. Example: Aluminum.

Question 14

What is Toughness?

Answer 14

The ability of a material to absorb energy and withstand shock without fracturing.

Question 15

What is Hardness?

Answer 15

The ability of a material to resist scratching, abrasion, or penetration.

Question 16

What is Brittleness?

Answer 16

The tendency of a material to break rather than deform under stress. Example: Glass.

Question 17

What is Fatigue?

Answer 17

The weakening of a material due to repeated or fluctuating stress over time.

Question 18

What is Oxidation?

Answer 18

A chemical reaction where a material loses electrons. Example: Rusting of iron.

Question 19

What is Flammability?

Answer 19

The ability of a material to catch fire and burn. Example: Wood, Paper.

Question 20

What is Thermal Expansion?

Answer 20

The increase in size of a material when heated.

Question 21

What are the properties of Engineering Materials?

Answer 21

1. Physical
2. Mechanical
3. Chemical
4. Thermal
5. Optical
6. Electrical
7. Magnetic

Question 22

What are the types of Destructive Testing?

Answer 22

1. Tensile Testing
2. Compression Testing
3. Thermal Expansion Testing
4. Beam Deflection Testing
5. Shear and Torsion Testing
6. Impact Testing
7. Hardness Testing
8. Fatigue Testing
9. Bend Testing

Question 23

What are the components of a Universal Testing Machine (UTM)?

Answer 23

1. Control Panel
2. Grips/Fixtures
3. Crosshead
4. Load Frame
5. Load Cell
6. Actuator

Question 24

What are the properties measured via Tensile Testing?

Answer 24

1. Ultimate Tensile Strength
2. Tensile Yield Strength
3. Ductility
4. Modulus of Elasticity

Question 25

What are the types of Impact Testing?

Answer 25

1. Charpy Impact Testing 2. Izod Impact Testing 3. Drop-Weight Impact Testing 4. Dynamic Tear Testing

Question 26

What are the applications of Fatigue Testing?

Answer 26

1. Automotive Industry 2. Construction Industry

Question 27

What is the Universal Testing Machine (UTM)?

Answer 27

A machine used to test mechanical properties of materials by applying tensile, compressive, or transverse stresses.

Question 28

What is Tensile Testing?

Answer 28

A destructive test where a material is pulled apart until it fractures to measure strength and elasticity.

Question 29

What is Compression Testing?

Answer 29

A test where a material is subjected to forces that push, compress, squash, crush, and flatten it.

Question 30

What is Impact Testing?

Answer 30

A test used to evaluate the resistance of materials to impact and shock. Examples: Charpy and Izod tests.

Question 31

What is Hardness Testing?

Answer 31

A destructive test to evaluate a material's hardness, strength, and wear resistance by pressing a hard object into its surface.

Question 32

What is Fatigue Testing?

Answer 32

A test to evaluate a material’s resistance to cyclic loading by subjecting it to repeated stress until it fails.

Question 33

What is Bend Testing?

Answer 33

A test used to evaluate a material's ductility and toughness by bending it until fracture occurs.

Question 34

Why is Material Testing Important?

Answer 34

1. Ensures compliance with regulatory agencies. 2. Helps in selecting appropriate materials for applications. 3. Evaluates product design and improvements. 4. Verifies production processes.

Question 35

What is the purpose of Compression Testing?

Answer 35

To determine parameters like: 1. Proportional Limit 2. Elastic Limit 3. Yield Point 4. Compressive Strength

Question 36

What is the purpose of Beam Deflection Testing?

Answer 36

By testing beam deflection, we determine: 1. Strength of the beam 2. Stiffness of the beam 3. Modulus of Elasticity