Question

quiz
question 3 of 6
this weld defect is an example of:
burn-through
porosity
lack of penetration
excessive spatter

Explanation:

Analyze the visual evidence

Using the Welding Defects knowledge point
The image displays a weld bead covered with numerous small, rounded cavities, holes, or pockets scattered across and within the weld metal surface.

Identify the specific defect

Using the Porosity knowledge point
These pocket-like cavities are gas pockets trapped in the solidifying weld pool, which is the classic visual presentation of porosity.

Evaluate the other options

Using the Welding Defects knowledge point

• Burn-through is a hole completely melted through the base metal.
• Lack of penetration is a failure of the weld metal to fuse the root of the joint.
• Excessive spatter consists of small metal droplets scattered around the weld bead.

Thus, the correct option is Porosity.

Answer:

• Burn-through
• Porosity (Correct answer)
• Lack of penetration
• Excessive spatter