During a visual weld inspection, which criteria indicate the weld is acceptable?

During a visual weld inspection, which criteria indicate the weld is acceptable?

• A. Bead must be jagged and uneven.
• B. Uniform bead shape, adequate reinforcement, no cracks or excessive porosity, and correct alignment and dimensions.
• C. Any level of porosity is acceptable.
• D. Reinforcement should be minimal regardless.

Answer: (B)

Visual weld inspection relies on observable geometry and surface quality to judge acceptability. A visually acceptable weld shows a uniform bead profile, meaning the ridges and width are consistent along the weld, which reflects steady heat input and proper travel speed. It also has adequate reinforcement—not too little or too much—so the weld properly fuses the joint without introducing weak underfill or bulky contours that can cause problems during service. The absence of cracks and excessive porosity is essential because cracks can propagate and porosity creates voids that weaken the weld or trap gases. Finally, the weld must be aligned and dimensioned correctly to meet the joint design, with the weld metal filling the joint as intended and staying within specified tolerances. Together, these criteria indicate the weld will perform as required, whereas a jagged or uneven bead, any porosity, or minimal reinforcement would signal problems with integrity or fit-up.

Visual weld inspection relies on observable geometry and surface quality to judge acceptability. A visually acceptable weld shows a uniform bead profile, meaning the ridges and width are consistent along the weld, which reflects steady heat input and proper travel speed. It also has adequate reinforcement—not too little or too much—so the weld properly fuses the joint without introducing weak underfill or bulky contours that can cause problems during service. The absence of cracks and excessive porosity is essential because cracks can propagate and porosity creates voids that weaken the weld or trap gases. Finally, the weld must be aligned and dimensioned correctly to meet the joint design, with the weld metal filling the joint as intended and staying within specified tolerances. Together, these criteria indicate the weld will perform as required, whereas a jagged or uneven bead, any porosity, or minimal reinforcement would signal problems with integrity or fit-up.