Vibration measurements
Using vibration measurements, we the determine the vibration behavior of machines and installations. On the basis of the pattern which is measured, we can make statements about the condition of the machine. DB Asset Services performs vibration measurements mainly to identify misalignment, foundation problems, bearing and gear damage.
Torsional vibration measurements
When a drivetrain is designed for high powers, a torsional vibration calculation is made. Based on the results of this calculation, the correct (flexible) coupling is selected in the drive. This ensures that the excitation frequencies are different from the torsion resonance frequencies. In result, the machine won’t generate high vibration levels which could lead to premature failure of the installation’ components.
Power measurements
When a force is applied on a shaft, torque powers are created. This is causing rising tensions in the shaft, which causes twisting and stretching of the shaft. By measuring the stretching if the shaft’ surface, it is possible to calculate the torque on the shaft using the specifications of the shaft. DB Asset Services has the expertise and the equipment to measure on two shafts simultaneously.
Shaft voltage measurements
Electrical corrosion (breakdown) is a common form of early failure of a bearing. This is often seen with electric motors with modern frequency controllers. These cause high peak voltages across the bearing, which can cause currents to flow.
Sound measurements
An often-occurring comfort problem in a building or ship is that of excessive noise. DB Asset Services performs noise measurements to find out if the noise level is too high. The measured level is compared with the applicable standard. In case the noise level is too high, the source is investigated.
Online monitoring
There is a number of situations in which periodic condition monitoring is not possible or falls short. This is the case for installations:
- Which are unreachable for periodic measurement rounds.
- Of which the damage may develop very quickly lead to failure.
- In which damage has occurred and due to time pressure repair is currently not possible.
- Expensive or highly critical installations.
Thermografic analysis
Temperature is perhaps the most measured parameter and a reliable indicator of the condition of journal bearings, electrical installations and so on. Temperature should only be considered as a relative term. Since temperature, reflection, emission and load plays a major role in temperature measurement, thermographic measurement results cannot always be compared directly with previous measurements.
Fluid analyses
DB Asset Services provides fluids analysis. These fluids may include lubricating oil, coolant, hydraulic oil etc. Liquids analyzes can be used for two purposes: to determine whether the fluid is suitable for further use, or check whether there are wear particles present in the oil indicating problems.
Pump measurements
With some processes does the centrifugal pump play a crucial role. For example this pump is needed in the dredging proces or water pumping station. It is of great importance that the pump functions properly and works in its calculated operating point and does not use excessive energy.
Ultrasound
With ultrasound measurement sounds are recorded that are in a higher frequency than is possible to hear with the human ear. DB Asset Services uses Ultrasound detection for multiple purposes. Since the sounds are only measured in a certain direction it is possible to locate the exact location of the origin of the sound.
