What is the primary purpose of visual weld inspection?
Visual inspection is a non-destructive test that allows inspectors to identify surface-level weld discontinuities before and after welding.
Which method is considered a non-destructive testing (NDT) technique?
Ultrasonic testing is a common NDT technique used to detect internal weld flaws without damaging the component.
What type of weld defect is characterized by a crack in the weld or base metal?
Cracks are serious weld defects that can compromise structural integrity and are usually grounds for automatic rejection.
Which welding standard outlines quality requirements for steel structures?
AWS D1.1 is the most commonly referenced welding code for structural steel fabrication and inspection requirements.
What is the main advantage of using radiographic testing (RT)?
Radiographic testing allows for the detection of internal weld defects, such as slag inclusions or voids, by using X-rays or gamma rays.
What does porosity in a weld typically result from?
Porosity is caused by gas entrapment in the weld metal, often due to contamination or improper shielding during the welding process.