Visualising Vibration for Better Analysis and Understanding
ALS provides leading services in the field, combining the broadest technician pool with leading technology and execution strategies.
This case study discusses use of an emerging technology in the field of condition monitoring, the ability to amplify and analyse video of vibrating components to more accurately diagnose the nature of vibration occurring and the actions that need to be taken to correct it.
The necessary actions to manage this vibration needed to be identified and conveyed to site to ensure that appropriate actions were taken.
Routine vibration indicated that the dominant vibration was occurring at 1 and 25 Hz respectively.
As it was known from routine vibration analysis that dominant vibration frequencies of 1 and 25 Hz were present, video was able to be filtered at these frequencies to clearly show the different modes of vibration (see attached videos).
Vibration at 1 Hz was mainly observed in the horizontal direction, whilst at 25 Hz vibration was dominant in the vertical direction.
Combined with the routine vibration analysis and strobe inspection, the source of vibration was identified as build up on the fluid coupling inner circumference.
Recommendations to inspect and repair the fluid coupling were made and able to be acted on to correct the vibration and extend machine life.
Video analysis was again extremely effective in diagnosing and visualising structural issues such as looseness, frame cracks, resonance, inadequate stiffness and differential movement across joints.
We believe in confidence in industrial assets, delivering this through our broad suite of services including:
- Non-destructive testing (traditional and advanced);
- Condition monitoring;
- Engineering consulting (civil, mechanical, materials, structural).
Combined with the latest technologies, ALS continues to deliver cost effective solutions.