Terms (1)

Question 1

Elasticity

Answer 1

A metal property that makes the Propagation of Ultrasonic waves possible

Question 2

Vibrations

Answer 2

How sound Propagates through a material

- Domino effect of atoms

Question 3

Cycle

Answer 3

A particle that is displaced from rest position in one direction and another before returning to its rest position

Question 4

Frequency

Answer 4

The number of Cycles per second

Question 5

Wavelength

Answer 5

The distance a wave travels during a cycle over time

Question 6

Period of a Cycle

Answer 6

The time required to complete one Cycle

Question 7

Angle of Incidence

Answer 7

The angle at which a wave strikes an interface

- Measured between the wave line and a line 90° from the interface surface

Question 8

Normal Incidence

Answer 8

When the Angle of Incidence strikes an interface head on (at 90°)

Question 9

Acoustic Impedance

Answer 9

A materials resistance to Propagation from an Ultrasonic wave

Question 10

Acoustic Impedance Mismatch

Answer 10

When there is an interface between two materials with a different Acoustic Impedance

Question 11

Propagation

Answer 11

Vibrations, between particles within a material

• From elasticity and density
• Propagated means to move

Question 12

Amplitude

Answer 12

How far a particle has been pushed out of it’s rest position

Question 13

Velocity

Answer 13

Sound travels at different velocity in different materials.

• depends on elasticity and density
• sound travels faster in solids than liquids, gases because of density

Question 14

Sound Propagation

Answer 14

Pushing a particle out of place and it wanting to return to rest but will have a “swinging” effect before doing so