1
Q
Acoustic Emissions
A
100 to 300 kHz
2
Q
Manual UT
A
1 to 4 MHz
3
Q
Commercial ultrasonic testing
A
. 2 to 25 MHz
4
Q
Beyond the hearing range of the human ear
A
20,000 Hz
5
Q
Immersion UT testing
A
10 MHz
6
Q
UT Ferrous and nonferrous the welds
A
1 to 2.5 MHz
