Name two nondestructive tests used to evaluate weld quality besides visual inspection.

Name two nondestructive tests used to evaluate weld quality besides visual inspection.

• A. Dye penetrant testing (PT) and magnetic particle testing (MT).
• B. Ultrasonic testing (UT) and radiography (RT).
• C. Tensile testing and hardness testing.
• D. Visual inspection and bend test.

Answer: (A)

Nondestructive testing methods that reveal surface flaws in welds are dye penetrant testing and magnetic particle testing. Dye penetrant testing applies a liquid that soaks into any surface-breaking cracks; after wiping away excess penetrant and applying a developer, indications become visible under light, highlighting cracks, porosity at the surface, or incomplete penetration. Magnetic particle testing magnetizes the weld area and sprinkles iron particles over it; defects disturb the magnetic field and attract particles, creating visible indications on the surface that point to flaws near or at the surface. Both methods are quick, economical, and require only surface access, making them common companions to visual inspection for assessing weld quality. Other options either involve destructive testing or probe internal conditions rather than surface flaws, which is why the two surface-focused nondestructive methods are the typical choices here.

Nondestructive testing methods that reveal surface flaws in welds are dye penetrant testing and magnetic particle testing. Dye penetrant testing applies a liquid that soaks into any surface-breaking cracks; after wiping away excess penetrant and applying a developer, indications become visible under light, highlighting cracks, porosity at the surface, or incomplete penetration. Magnetic particle testing magnetizes the weld area and sprinkles iron particles over it; defects disturb the magnetic field and attract particles, creating visible indications on the surface that point to flaws near or at the surface. Both methods are quick, economical, and require only surface access, making them common companions to visual inspection for assessing weld quality. Other options either involve destructive testing or probe internal conditions rather than surface flaws, which is why the two surface-focused nondestructive methods are the typical choices here.