Question

quiz
question 5 of 6
this weld defect is an example of:
porosity
excessive spatter
lack of penetration
burn-through

Explanation:

Analyze the visual evidence

The image shows a completed weld bead on a metal plate. Surrounding the weld bead, there are numerous small, scattered droplets of molten metal that have solidified on the surface of the base metal.

Identify the weld defect

Using the Welding Defects knowledge point, we evaluate the options:

• Porosity refers to gas pockets or cavities trapped within the weld metal.
• Excessive spatter consists of metal particles expelled during welding that do not form part of the weld bead, adhering to the surrounding base metal.
• Lack of penetration occurs when the weld metal does not fuse deeply enough into the joint.
• Burn-through is a hole blown completely through the parent metal.

Using the Porosity knowledge point, we confirm that the visible small droplets on the plate surface represent spatter rather than internal or surface gas holes. Therefore, the defect shown is excessive spatter.

Answer:

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