CRI Welding Defects Identification 2

Question 1

On a radiograph, a planar defect oriented parallel to the X-ray beam will appear:

Accepted Answer

As a sharp, well-defined dark line

Answer

Planar defects such as cracks aligned parallel to the beam show maximum density contrast and appear as sharp dark lines.

Question 2

Incomplete fusion in a radiograph is most likely to appear as:

Accepted Answer

A straight or slightly curved dark line along the weld fusion line

Answer

Incomplete fusion appears as a dark line located at the weld fusion zone because the unbonded interface creates a density-rich gap.

Question 3

Which welding defect produces a radiographic image with a light (less dense) region surrounded by darker areas?

Accepted Answer

Tungsten inclusion

Answer

Tungsten inclusions appear lighter (less radiographically dense) than the surrounding weld metal because tungsten has a higher atomic number and absorbs more radiation.

Question 4

A radiograph shows a series of elongated dark indications with irregular edges running longitudinally in the weld. This pattern is most consistent with:

Accepted Answer

Wormhole (piping) porosity

Answer

Wormhole or piping porosity creates elongated, tunnel-like voids that appear as irregular dark elongated indications oriented along the weld axis.

Question 5

What radiographic characteristic distinguishes undercut from a crack at the weld toe?

Accepted Answer

Undercut has a smoother, more uniform edge compared to a crack

Answer

Undercut typically shows a smoother, more continuous dark line at the weld edge, while cracks display irregular, branching edges.

(CRI) Certified Radiographic Interpreter Practice Test

(CRI) Certified Radiographic Interpreter Practice Test

CRI Welding Defects Identification 2