| |
With ultrasound procedures, it is only defects whose cross section measure at least half as large the sound wavelength that can be detected. For a defect with a thickness of 1 mm in steel, the frequency must amount to 6 MHz. Only flaws positioned perpendicularly to the direction of the wave direction are detectable (cracks in the direction of the wave dispersal are not).
Advantages:
Internal flaw detection
Depth detection
Mobile, light and compact equipment
Introduced, well known
Disadvantages:
High time cost
Experience required
|
