Acoustic vibration at a frequency that exceeds the upper limits of the human ear, between 20 kHz and a few tens of MHz Propagates very efficiently inside steel at frequencies of a few MHz
Synonymous with an ultrasound probe or sensor.
Synonymous with an ultrasound transducer or sensor.
Compression force applied between the assembled parts by the screw/bolt subjected to it by traction. Expressed in Newtons (N) or, more practically, kilo-Newtons (kN). 1 N = 0.1019 kgf. 1 kN = 101.9...
Either the screw or assembled parts are warped (elastic threshold exceeded).