Calibration Blocks

Question 1

Which block is commonly used in weld inspection calibration procedures?

Answer 1

DSC block

Question 2

What kind of features does the DSC block typically include?

Answer 2

Notches or side-drilled holes at known distances

Question 3

What is the DSC block used for?

Answer 3

Calibration of sensitivity and distance amplitude correction (DAC) for angle probes.

Question 4

What does DSC stand for in ultrasonic calibration blocks?

Answer 4

Distance Sensitivity Calibration

Question 5

Which block is best suited for portable setups and smaller probes?

Answer 5

V2 block

Question 6

What is the V2 block mainly used for?

Answer 6

Sensitivity calibration and DAC curve plotting.

Question 8

What are the depths of the flat-bottom holes in the V2 block?

Answer 8

Sensitivity calibration and DAC curve plotting.

Question 9

Which block is defined in ISO 7963?

Answer 9

V2 block

Question 10

What is the standard length of the IIW/V1 block?

Answer 10

300 mm

Question 11

Which feature of the V1 block is used to locate the probe index point?

Answer 11

The 100 mm radius curve

Question 12

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Q: What small radius is typically found on the IIW/V1 block for near-surface resolution checks?

Answer 12

1.5 mm or 3 mm

Question 13

What is the radius of the large curved section on the IIW/V1 block?

Answer 13

100 mm

Question 14

Which standard defines the IIW/V1 block?

Answer 14

ISO 2400

Question 15

What is the main use of the IIW/V1 block in UT?

Answer 15

Calibration of angle beam probes, probe index point location, and resolution checks.

Question 16

What is the full form of IIW in the IIW/V1 calibration block?

Answer 16

International Institute of Welding