The weld inspection method that utilizes penetrameters is called what type of inspection?

The correct answer refers to radiographic inspection, which is a non-destructive testing method that employs penetrameters, also known as IQI (Image Quality Indicators). These penetrameters are used to determine the quality of the radiographic image produced during the inspection process. They serve as a reference to help assess the sensitivity of the radiographic technique in detecting flaws within the materials being inspected.

In radiographic inspection, X-rays or gamma rays are passed through the material, and the resulting image reveals details about internal structures. The penetrameter ensures that the radiographic film or digital detector is sensitive enough to capture the required detail, which is critical in identifying any existing defects, such as cracks or voids, that may compromise the integrity of welded joints.

The other inspection methods mentioned do not typically use penetrameters, which distinguishes radiographic inspection as the correct choice. Dye penetrant and fluorescent penetrant tests focus on detecting surface-breaking flaws using liquid penetrants, while ultrasonic inspection employs sound waves to detect discontinuities. None of these methods utilize penetrameters in their procedures, highlighting why radiographic inspection stands out in this context.