Non-Destructive Testing - Radiography

Question 1

What is the definition of Radiography testing

Answer 1

The use of penetrating gamma or X-radiation to examine the defects and internal features of a material/product

Question 2

What does the resulting shadow-graph show

Answer 2

The internal features and soundness of the material. The thickness and changes in density are indicated as lighter and darker areas.

Question 3

All X-rays are absorbed to some extent when passing through matter. This is due to what?

Answer 3

Electron ejection or scattering

Question 4

What are the limitations of Radiography

Answer 4

• There is a limit of thickness that radiation can penetrate
• Both sides of the material must be accessible
• Highly skilled operator is required due to the potential health hazards
• Expensive equipment