Novatest S.r.l.
Manual for Multichannel Ultrasonic Pile Integrity Tester
34
Figure 3.4. The top left corner of single-channel waveform range for
pile test displays acoustic parameter of head wave and the lower left
corner displays name of profile, as shown in Figure 3.4a. The bottom
horizontal row of single-channel waveform range for strength test,
defect test and crack test displays acoustic parameter and zero
acoustic time value of head wave, the lower left corner displays series
number of test point, top left corner displays delay time, as shown in
Figure 3.4b.
The vertical progress bar at the right of single-channel
waveform means the gain; when gain is increasing, the progress bar
ascends and when gain is decreasing, the bar descends.
1) Acoustic time value T: Transmission time of ultrasonic
from transmitting transducer to receiving transducer, the
unit is
μ
s, this acoustic time value has deducted the system
zero acoustic time value;
2) Amplitude value A: The amplitude value of received head
wave of ultrasonic, it is used to measure the energy of
ultrasonic and the unit is dB;
3) Acoustic velocity value V
：
The transmission speed of
ultrasonic in concrete; it is a calculated value and the
calculation method is to divide spacing by T value, the unit
is km/s.
