Earthquake resistant measures, vibration experiment of rack implementation

•Earthquake resistant tests with measured waves can be performed to customers who are anxious about earthquake resistance measures of equipment. (At the cooperation test site)
•As part of the product performance evaluation test, vibration test of each rack of welded structure and rivet structure was carried out.
•We conducted the vibration test, the resonance vibration test and the confirmation test by the measured wave.

[Note] Seismic performance differs depending on model, specification, mounting condition (center of gravity) · installation environment.

Actual vibration measurements test
1)Southern Hyogo Prefecture Earthquake, vertical and east west waveform
2)Acceleration Level · Wave length
3)Excitation direction: Up and down/left and right, up and down / front and back

Confirmation test
1) Frequency and acceleration level
Frequency: resonance frequency Hz
Amplitude level: 1.0 – 3.0 m / s 20 – p
2) Test time: 30 waves
3) Excitation direction: back and forward, left and right direction

Resonance vibration test
1)Frequency and amplitude level
Frequency 30 to 1 Hz
Amplitude level 10.0 mm pp
Acceleration level 1.0 m / s 2
2)Sweep method: Logarithmic sweep
3)Sweep time: 4.9 minutes
4)Excitation direction: back and forward, left and right direction
5)Vibration time: 1 time for one way