After the sample is flattened in the destructive test, what is inspected?

After the sample is flattened in the destructive test, what is inspected?

• A. Surface roughness
• B. Weld metal cracks
• C. Color of the weld
• D. Grain structure

Answer: (B)

In a destructive weld test, the goal is to reveal how the weld behaves under bending or flattening stress. After the sample is flattened, you look specifically for cracks that form in the weld metal. Cracks indicate a failure in the weld’s ductility and integrity under load, which is exactly what this test is designed to detect. Surface roughness, color of the weld, and grain structure aren’t the focus of this step. Surface roughness is a cosmetic/finish concern, color isn’t a reliability indicator, and grain structure requires metallurgical cross-section analysis, not a simple flattening after a destructive bend. The presence of cracks in the weld metal directly informs whether the weld would hold up under service stresses.

In a destructive weld test, the goal is to reveal how the weld behaves under bending or flattening stress. After the sample is flattened, you look specifically for cracks that form in the weld metal. Cracks indicate a failure in the weld’s ductility and integrity under load, which is exactly what this test is designed to detect.

Surface roughness, color of the weld, and grain structure aren’t the focus of this step. Surface roughness is a cosmetic/finish concern, color isn’t a reliability indicator, and grain structure requires metallurgical cross-section analysis, not a simple flattening after a destructive bend. The presence of cracks in the weld metal directly informs whether the weld would hold up under service stresses.