Which sequence correctly lists the three steps described for the destructive test?

• A. Band the pieces along the weld axes with the root on the face of the bend; hammer the sample flat; inspect for cracks
• B. Hammer the sample flat; band the pieces; inspect for cracks
• C. Band the pieces with the root on the face of the bend; hammer the sample flat; inspect for cracks
• D. Inspect for cracks; band the pieces; hammer the sample flat

Answer: (A)

In a destructive bend test, you want to reveal any weaknesses in the weld by applying a controlled bending load after proper setup. The first step is to band the pieces along the weld axes with the root facing the bend surface. This orientation puts the most stress on the weld root during bending, which is where cracks are most likely to appear if the weld isn’t sound. Securing the pieces this way also ensures the joint stays properly aligned during the test.

Next, you hammer the sample flat. This step plastically deforms the specimen, intensifying the bending stress and making any hidden cracks in the weld or heat-affected zone more likely to show up on the surface.

Finally, you inspect for cracks. After the deformation, you look for visible crack lines or other defects to judge the weld’s integrity. If cracks are found, the weld would fail the test.

Other sequences don’t fit because they omit the specific orientation of the root relative to the bend, or they perform steps in an order that wouldn’t reliably reveal cracks (for example, inspecting before applying the load).