Advantages of Ultrasonic Investigation
1.
High sensitivity to both
surface and subsurface discontinuities, permitting the detection of extremely
small flaws.
2.
Greater accuracy than
other nondestructive methods in determining the depth of internal flaws and the
thickness of parts with parallel surfaces.
3.
Nonhazardous to
operations or to nearby personnel and has no effect on equipment and materials
in the vicinity.
4.
Capable of portable or
highly automated operation.
5.
The depth of penetration
for flaw detection or measurement is superior to other NDT methods.
6.
Only single-sided access
is needed when the pulse-echo technique is used.