CRI Welding Defects Identification 3

Question 1

Slag inclusions in a radiograph typically appear as:

Accepted Answer

Irregular dark indications with jagged edges

Answer

Slag inclusions appear as irregular, dark, jagged indications because slag is less dense than the surrounding weld metal and has an irregular shape.

Question 2

Which parameter most directly affects the sensitivity of a radiograph for detecting small defects?

Accepted Answer

Radiation energy (kV or MeV)

Answer

Radiation energy determines the contrast and penetration capability, directly influencing the sensitivity to detect small density differences from defects.

Question 3

On a radiograph, incomplete root penetration appears as:

Accepted Answer

A continuous dark line along the centerline of the weld root

Answer

Incomplete root penetration creates a void at the root centerline, showing as a continuous dark line in the center of the weld image.

Question 4

What does an elongated indication aligned perpendicular to the weld axis most likely represent?

Accepted Answer

Transverse crack

Answer

Transverse cracks run perpendicular to the weld axis and appear as dark elongated lines crossing the weld width.

Question 5

A 'burn-through' in a weld radiograph will typically appear as:

Accepted Answer

A very dark circular or irregular area where excess metal melted through

Answer

Burn-through creates a hole or collapsed region in the weld, producing a very dark (high-density) area on the radiograph.

(CRI) Certified Radiographic Interpreter Practice Test

(CRI) Certified Radiographic Interpreter Practice Test

CRI Welding Defects Identification 3