Visual examination is used to check for surface condition.

Visual examination is used to check for surface condition.

• A. Ultrasonic
• B. Radiographic
• C. Visual
• D. Magnetic Particle

Answer: (C)

Visual examination focuses on what you can directly see on the surface, so it’s the primary method for assessing surface condition. It lets you quickly spot issues like surface cracks, undercut, overlap, burn-through, slag, unacceptable bead geometry, contamination, and roughness or finish problems. Because these surface-related defects are visible without special equipment, visual inspection is fast, inexpensive, and usually required as the first quality check. Other nondestructive tests look below the surface: ultrasonic testing uses sound waves to reveal internal flaws or measure thickness; radiographic testing uses X‑rays to image internal features; magnetic particle testing detects surface and near-surface discontinuities in ferromagnetic materials. While these methods can uncover hidden flaws, they aren’t focused on surface condition the way a visual check is, so they complement rather than replace visual inspection.

Visual examination focuses on what you can directly see on the surface, so it’s the primary method for assessing surface condition. It lets you quickly spot issues like surface cracks, undercut, overlap, burn-through, slag, unacceptable bead geometry, contamination, and roughness or finish problems. Because these surface-related defects are visible without special equipment, visual inspection is fast, inexpensive, and usually required as the first quality check.

Other nondestructive tests look below the surface: ultrasonic testing uses sound waves to reveal internal flaws or measure thickness; radiographic testing uses X‑rays to image internal features; magnetic particle testing detects surface and near-surface discontinuities in ferromagnetic materials. While these methods can uncover hidden flaws, they aren’t focused on surface condition the way a visual check is, so they complement rather than replace visual inspection.