Advantages of Radiography Testing
- Radiography is compatible with most materials,
- Radiography provides a permanent visual record of the test object
on either film or digital media,
- Radiography reveals discontinuities within a material,
- Radiography allows inspection of the internal structure of a
component,
- Radiography discloses fabrication errors and indicates the need
for corrective action, and
- Radiography reveals assembly errors.
Limitations of Radiography Testing
Radiography’s
limitations include the following physical and economic considerations:
- Radiography
requires accessibility to both sides of the test object.
- Small discontinuities that are not parallel with the radiation beam are difficult to image or detect.
- Radiography is an expensive testing method.
- Film radiography is a time-consuming testing method. After taking the radiograph, the film must be processed, dried, and interpreted.
- Depth of a discontinuity may be difficult to determine.
