¡ß Air Bearing Endurance Test

 

- Over 20,000 times of on/off test
  (most severe condition for air bearing endurance)

- Semi-permanent life for Journal / Thrust bearing
 

 


 


 

 

Shaft and journal bearing surface after endurance test
 

  ¡ß Forced Vibration Test

 

- Check if there is any problem when the blower is operating under forced vibration

- Test Condition (requirement for Advanced Locomotive Propulsion System)
       ¢º Continuous Displacement           ~ 7.6 mm (5~10 Hz)
       ¢º Continuous Acceleration            ~ 1.5 g (10~200 Hz)
       
     Corresponds to an earthquake measuring 8.0 on the Richter scale
 



Vibration Environment Test
 

   

  ¡ß Hot Environment Test

 

- Heated air is supplied to the blower inlet
- Normal operation confirmed with inlet air temperature of 45 degC
 


Hot Environment Test
 

  ¡ß Spin Test

 

Check the structural integrity of impeller at 120% of nominal speed
 



Spin Test Equipment
(up to 200,000 rpm for 10 kg of weight)