Question

A groove that is melted into the base metal adjacent to the toe of the weld and left

unfilled is called
Select one:
O a. underfill.
b. undercut.
O c. stress cracking.
O d. cold lap.

Answer 1

Undercut

Undercut – This discontinuity is defined as a groove melted into the base metal adjacent to the weld toe, or weld root, and left unfilled by weld metal. The term undercut is used to describe either of two conditions.

Answer 2

It’s B because a Undercut is a discontinuity defined as a groove melted into the base metal adjacent to the weld toe, or weld root, and left unfilled by weld metal. The term undercut is used to describe either of two conditions.