Nondestructive testing methods

• Use
• Surface and subsurface discontinuities
• Changes in hardness or conductivity near the surface
• 100% of the production need to be tested
• Materials can't be directly accessed by people

• Advantages
• Recognized method for most of the standards and codes
• Repetitiveness
• Sensitiveness
• Reliability
• Can be easyly adopted
• Low cost
• Doesn't need human extensive participation

It's the best method for surface testing

• Use
• Surface discontinuities
• Materials can be accessed by people or by cameras

• Advantages
• Intuitiveness (easy to understand the results)
• Can be easyly adopted

However it's very dependent on environmental conditions such us surface conditions, light and floating particles

• Use
• Internal discontinuities

• Advantages
• Recognized method for most of the standards and codes
• Repetitiveness
• Can be easyly adopted

However it's an expensive method and it has an extensive couplant consumption

• Use
• Surface discontinuities
• Materials can be directly accessed by people
• Only statistics samples are necessary to be tested

• Advantages
• Intuitiveness

However it's a dirty method and needs human execution

• Use
• Surface discontinuities
• Materials can be directly accessed by people
• Only statistics samples are necessary to be tested

• Advantages
• Intuitiveness

However it's a dirty method and needs human execution

• Use
• Internal discontinuities
• Materials surfase can be directly accessed by people
• Discrete production

• Advantages
• Intuitiveness
• Reliability
• Accuracy

However it's a dangerous and very expensive method