• What if towers swing?
  • What if towers swing

SHM.Blade – condition monitoring system for the detection of structural damage on rotor blades

Rotor blades of wind turbines are exposed to extreme environmental conditions and high dynamic stresses. They have a decisive influence on the energy yield and thus on the economic efficiency of a wind turbine. Incipient damage must be detected at the earliest stage possible in order to plan and take reasonable repair measures in due time and thus protect the investment.

Periodic inspections are not sufficient for an early detection of damage. Continuous monitoring ensures a higher level of safety.

The solution from Wölfel: SHM.Blade® for the detection of structural damage.

Your benefit: Higher economic efficiency

SHM.Blade for the detection of structural changes

With SHM.Blade® you increase the economic efficiency of your wind turbine. Due to the early detection of damage you can prevent the development of severe damage and thus minimize repair costs. At the same time, you reduce the downtimes of your turbine and thus increase the energy yield.

In the field of Structural Health Monitoring (SHM) Wölfel relies on various measured physical parameters in order to be able to draw conclusions about structural changes from these multidimensional data. The decisive factor is a fully automatic online signal analysis directly in the wind farm. Damage must be reliably detected and distinguished from normal impacts from the environment and current operation.

SHM.Blade detects structural changes in relation to a certain reference condition. This reference condition is determined fully automatically without any help from
outside and individually for every single rotor blade immediately after the activation of SHM.Blade. Such a blade-specific learning phase ensures high sensitivity to damage – despite the mass and stiffness tolerances caused during production. After completion of the learning phase, the system continuously calculates condition indicators, which provide information on the current condition of the blade at all times. By means of a two-level warning and alarm concept the system control can react and subsequent damage can be prevented.