Project Objectives

Scientific objectives

  • To study guided waves in composite blades and determine the optimal frequency and location of the transducers for exciting wave modes and focusing the propagation.
  • To investigate the effects of low frequency vibrations in wind turbine blades and determine the maximum forces that the shakers can safely induce in the structure.
  • To determine the effects of the low frequency vibrations on the fatigue performance of the blades and the blade dynamics. 

Technological objectives

  • To optimise COTS high power transducers for use in the de-icing system to deliver at least 1 W/cm2, three times higher than previous attempts.
  • To develop new controllable low frequency shakers for use on blades that can deliver acceleration of at least 30g.

Objectives

  • To deliver pulser-receiver electronics for the ultrasonic transducers that can operate at -40oC.
  • To integrate the above mentioned subsystems along with a market ready ice detection system into a complete prototype system.

Operational

  • To validate the DeICE-UT technology to different ice formation conditions for a composite test sample.
  • To demonstrate the system installed on a sample blade part of dimensions a few metres in length and width that will demonstrate the long range effects of the ultrasonic de-icing system in a wind tunnel.