TEKNE Engineering

CONCLUSIONS The second survey on May 5, 2021, confirms the results obtained during the acquisition session on March 10, 2021. Data analysis showed stationary behavior during the 20 minutes of acquisition; The following findings are reported: The correlation between the low-frequency periodic stimulus (T::::: 1.5 f:::::0.67 Hz) and the flow rate (::::: 56 m3/h) is confirmed. The low-frequency periodic stimulus is still detected on the Y and Z axes. The periodic stimulus causes the tube to vibrate at its natural frequency of approximately 2.4 Hz. The tube vibration is detected mainly on the X axes. At the 2.4 Hzvibration, detected on the X axis of the accelerometer, an angular velocity occurs on the Z axis of the gyroscope at the same frequency, with a maximum amplitude of ± 0.02°/s: the tube performs micro-rotations on the vertical piane, due to the low-frequency pulsation. © 2025 TEKNEENGINEERING