340
H. Yan et al.
Fig. 28.4 Event plane
location without guard
sensor
X Distance/mm
Y Distance/mm
28.3 Data Collection and Result Analysis
28.3.1 Data Acquisition Without Guard Sensor
In order to test whether the installed guard sensor has a certain blocking effect
on the noise from the nitrogen sealing system, firstly, the acoustic emission signal
acquisition is conducted for the tested object without guard sensor. During the 30 min
acquisition process, 4180 events are formed, with an average of 139 events per minute.
The relevant acquisition results are shown in Figs. 28.4, 28.5 and 28.6.
28.3.2 Data Acquisition Under Some Escort Sensors
In order to test whether it can be blocked by the installation of local guard sensors, the
local guard is used for data collection in this test. In the 30 min collection process, 678
events are formed, with an average of 22.6 events per minute. The relevant collection
results are shown in Figs. 28.7, 28.8 and 28.9
H. Yan et al.
Fig. 28.4 Event plane
location without guard
sensor
X Distance/mm
Y Distance/mm
28.3 Data Collection and Result Analysis
28.3.1 Data Acquisition Without Guard Sensor
In order to test whether the installed guard sensor has a certain blocking effect
on the noise from the nitrogen sealing system, firstly, the acoustic emission signal
acquisition is conducted for the tested object without guard sensor. During the 30 min
acquisition process, 4180 events are formed, with an average of 139 events per minute.
The relevant acquisition results are shown in Figs. 28.4, 28.5 and 28.6.
28.3.2 Data Acquisition Under Some Escort Sensors
In order to test whether it can be blocked by the installation of local guard sensors, the
local guard is used for data collection in this test. In the 30 min collection process, 678
events are formed, with an average of 22.6 events per minute. The relevant collection
results are shown in Figs. 28.7, 28.8 and 28.9