Which statement best describes the relationship between visual inspection and NDE in weld inspection?

Which statement best describes the relationship between visual inspection and NDE in weld inspection?

• A. Visual inspection can detect undersell and overlap
• B. NDE methods can determine the size of discontinuities without damaging the weld
• C. Both A and B
• D. Neither A nor B

Answer: (C)

Visual inspection and nondestructive evaluation work together in weld inspection: sighting catches surface flaws, while NDE measures and sizes internal defects without harming the weld. Visual inspection can pick up surface conditions like undercut along the weld toe or an overlap on the weld face, which are visible without any testing equipment. NDE uses techniques such as radiography, ultrasonics, or dye penetrant to reveal flaws that may not be visible on the surface and to quantify their size, depth, and location without damaging the weld. Because one method identifies surface conditions and the other provides sizing of discontinuities without destroying the weld, both statements are true and complementary.

Visual inspection and nondestructive evaluation work together in weld inspection: sighting catches surface flaws, while NDE measures and sizes internal defects without harming the weld. Visual inspection can pick up surface conditions like undercut along the weld toe or an overlap on the weld face, which are visible without any testing equipment. NDE uses techniques such as radiography, ultrasonics, or dye penetrant to reveal flaws that may not be visible on the surface and to quantify their size, depth, and location without damaging the weld. Because one method identifies surface conditions and the other provides sizing of discontinuities without destroying the weld, both statements are true and complementary.