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Dynamic machine measurements
By quantifying the movement of machineries, such as propulsion systems in different operational conditions, engine outputs, and maneuvering scenarios, we can optimize its position to ensure proper alignment in all circumstances.
SHAFT POWER AND TORSIONAL VIBRATION MEASUREMENTS
A shaft line transferring energy by rotation is exposed to a torsional moment. To avoid fatigue damage, it is necessary to keep a sufficiently low torsional moment in the critical parts of the shaft. This means that the shafting arrangement must be examined for torsional vibration, whirling, and bending stresses during the development stage. The weakest part of the shaft line is found in coupling flanges and bolt connections. Using strain gauges, bending, axial and torsional forces, and shear stresses can be measured under load. In combination with shaft speed and torsional stresses, the transferred power through the shaft can then be calculated.
By measuring torsional shaft stresses and the shaft rotational speed, we can determine shaft power to verify the engine’s rated output. Measuring torsional vibration is crucial to understanding problems like coupling failures and shaft fractures.
SHAFT ORBIT MEASUREMENTS
By measuring the lateral movement of a rotating shaft, we can find the dynamic behavior. With this information, we can quantify whirling, identify why stern tube seals leak, and check if the alignment targets for static conditions are correct.
At your service
On Site Alignment is at your service for all dynamic machine measurements. We’ll come to you for any necessary machinery anywhere you are.