Why should welders round test specimen edges? They are more attractive that way. It prevents a notch effect from occurring It makes the specimen easier to weld It helps prevent cracks from starting at the corners.

## Step 1<br />The problem is asking why welders round the edges of test specimens. The options provided are:<br />A. They are more attractive that way.<br />B. It prevents a notch effect from occurring.<br />C. It makes the specimen easier to weld.<br />D. It helps prevent cracks from starting at the corners.<br /><br />## Step 2<br />The correct answer is B. It prevents a notch effect from occurring. This is because rounding the edges of test specimens helps to eliminate sharp corners or notches. These sharp corners or notches can act as stress concentrators, which can lead to premature failure of the weld.<br /><br />## Step 3<br />By rounding the edges, the stress is distributed more evenly across the surface of the specimen, reducing the likelihood of a notch effect. This is crucial in welding, as it ensures the integrity and strength of the weld.