Visual Testing (VT) Practice Exam

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What type of discontinuity might be found in weldments?

  1. shrinkage

  2. incomplete penetration

  3. seams

  4. laps

The correct answer is: incomplete penetration

Incomplete penetration is a type of discontinuity that can occur in weldments, which refers to the failure of the weld metal to completely fuse with the base material throughout the entire intended weld joint thickness. This can lead to weaknesses in the weld and may result in failures under stress or load. Incomplete penetration can arise from issues such as inadequate preparation of the joint, incorrect welding technique, or insufficient heat during the welding process. Understanding incomplete penetration is crucial in welding practice because it can significantly affect the integrity and performance of the welded structure. Identifying and correcting these types of discontinuities is essential for ensuring a high-quality weld and maintaining safety and reliability in welded components.

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