RADIOGRAPHY NDT – rt – xray

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Radiographic Testing (RT) is a non-destructive testing (NDT) process that explores the internal structure of manufactured components using either x-rays or gamma rays radiography NDT to detect any faults or defects.

The test-part is put between the radiation source and the film in radiography testing (or detector). Via interaction processes including scattering and/or absorption, the test-material part’s density and thickness variations can attenuate (i.e. reduce) the penetrating radiation. The variations in absorption are then captured either on film or electronically. Film radiography, Real Time Radiography (RTR), Computed Tomography (CT), Digital Radiography (DR), and Computed Radiography (CR) are some of the imaging methods and techniques used in industrial radiography.

X-ray and Gamma-ray for industrial use

There are two types of radioactive sources: X-ray and Gamma-ray. These radiation sources use electromagnetic waves of a higher energy intensity, i.e. shorter wavelengths. Because of the radioactivity involved in radiography testing, it is important that the Local Laws are strictly followed during the process.

Industrial Welding Inspection provides industry with computed tomography (CT), which is a lab-based advanced NDT process.  CT is a radiographic technique that generates cross-sectional and 3D volume images of the object being examined. These images allow for inspection of the test object’s internal structure without the inherent superimposition that 2D radiography entails. This function allows for a thorough examination of the internal structure of a variety of components.  The other form of volumetric examination that doesn’t require the use of radiation is called ultrasonic testing (UT). Learn more about Ultrasonic Testing here.