Types of Transducers (2)

Question 1

Types of Transducer Beams

Answer 1

• Straight Beam

- Angle Beam

Question 2

Straight Beam

Answer 2

Longitudinal Waves directly into material at 90°

Question 3

Angle Beam

Answer 3

A longitudinal transducer threaded into a plastic wedge (shoe) to produce the wave at an angle (shear wave)

Question 4

Types of Transducer Crystal formation

Answer 4

• Single Element

- Dual Element

Question 5

Single Element

Answer 5

One Crystal sends and receives vibrations

Question 6

Dual Element

Answer 6

Two Crystals, one sends vibration, the other receives

Question 7

Attachment Lines

Answer 7

• Delay Line

- High Temperature

Question 8

Delay Line

Answer 8

Used to move “dead zone” into an area not being inspected (lucite shoe)
- used to test thin materials that need good near-surface resolution

Question 9

High Temperature

Answer 9

Heat-resistant piece used on hot material/in service material
- also acts as a Delay Line

Question 10

Transducer Shapes

Answer 10

• Contact

- Immersion

Question 11

Contact Transducer

Answer 11

Used a cylindrical lens to match the contour of a part, projecting the vibrations at 90° to the surface
- Used for straight of angle beam inspection

Question 12

Immersion Transducer

Answer 12

Used a spherical lens (focused transducer) to focus or concentrate the vibration at one specific point, improving intensity at that point + near-surface resolution, high sensitivity