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takaaki.yokozawa - 8:08 Wednesday 08 March 2023 (24296) Print this report
Comment to Hammering test after IFI work (24293)
Vibration injection test to the leg of the IFI chamber.
The diaggui files are placed in
/users/yokozawa/Data/DARM/230307/

Fig.1. 50 -1000 Hz white injection
No special peak appeared.

Fig.2. 50 - 100 Hz white injection
70 Hz, 90 - 100 Hz coherence appeared

Fig.3. 100 - 200 Hz white injection
Two large peaks (108 and 127 Hz) appeared

Fig.4. 200 - 300 Hz white injection
Two large peaks(217 and 268 Hz) appeared

Fig.5. 300 - 400 Hz white injection
No special peak appeared.

Fig.6. 400 - 400 Hz white injection
No special peak appeared.

Fig.7. 121 Hz solo injection
Large linear peak appeared.

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