Radiographic Testing (RT)

Radiography (X-rays / Gamma rays) is used to produce images of objects using film or other detector that is sensitive to radiation. This variation in radiation produces an image on the detector that shows internal features of the test object

Radiographic Testing RT)

Advantages

  • Can be used to inspect virtually all materials
  • Most universal approach to volumetric examination
  • Provides a permanent record film / digital record of the inspected test object
  • Confirm the location of hidden parts in an assembly
  • Detects surface and subsurface defects
  • Ability to inspect complex shapes and multi-layered structures without disassembly
  • Minimum part preparation is required

Limitations

  • Access to both sides of the job is usually required
  • Orientation of the radiation beam to non-volumetric defects is critical
  • Radiation hazard to personnel
  • Operating licenses are required

Film Radiography

Film and processing chemicals are used in this popular method

Digital Radiography (DR)

One of the biggest advantages of the use of digital radiography is its ability to significantly reduce the radiation dose in comparison to film applications. In addition, new imaging techniques have increased the capacity for visualization of defects and revealed new potential for accurate evaluation.

Computed Radiography (CR)

Computed radiography uses, flexible, photo-stimulable phosphor (PSP) plate loaded into a cassette and exposed in a manner similar to traditional film radiography. The cassette is then placed in a laser reader where it is scanned and translated into a digital image. Once digitally captured, the image may be stored on a computer or other electronic media. Archiving is made easier and the images can be electronically distributed to others for viewing