Understanding of Leading-Edge Protection Performance Using Nano-Silicates for Modification

I. Ouachan*, M. Kuball, D. Liu, K. Dyer, C. Ward, I. Hamerton

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)
122 Downloads (Pure)


Leading edge erosion caused by raindrop impact is a key problem that needs to be overcome in the wind energy sector. Solutions up to date have not proved suitable, failing prematurely in their lifecycle at a cost to the wind industry. Failure mechanisms for rain erosion are not well understood, particularly the elastic and viscous polymer properties at the resulting high strain rates (106 - 109 Hz) of raindrop impacts. The effect of the inclusion of glycidyl polyhedral oligomeric silsesquioxane nanoparticles into a commercial polyurethane coating system was studied using nanoindentation and dynamic mechanical thermal analysis (DMTA). Results show that the inclusion of POSS improves damping, providing an alternative mechanism for energy dissipation without variation of Tg and minimal loss of stiffness. This presents a way of modifying current coating systems through the incorporation of POSS. Nanoindentation obtained previously unreported properties of the coating system (hardness, modulus and short-term recovery) and highlighted a correlation between loading rate and a reduction of short-term recovery. Nanoindentation was difficult for the modified leading-edge protection (LEP) samples as two phases were formed resulting in large standard deviations. DMTA results show modification of the LEP increases damping at lower temperature ranges introducing an additional mechanism of dissipating energy. Additionally, sweep data show an increase in elasticity at higher frequencies on the modified samples.

Original languageEnglish
Title of host publicationWindEurope Conference and Exhibition 2019: Delivering a Clean Economy for All European
Subtitle of host publicationProceedings of a meeting held 2-4 April 2019, Bibao, Spain
Number of pages11
Publication statusPublished - 21 May 2019
EventWindEurope Conference and Exhibition 2019 - Bilbao, Spain
Duration: 2 Apr 20194 Apr 2019

Publication series

NameJournal of Physics: Conference Series
PublisherIOP Publishing
ISSN (Print)1742-6588


ConferenceWindEurope Conference and Exhibition 2019

Fingerprint Dive into the research topics of 'Understanding of Leading-Edge Protection Performance Using Nano-Silicates for Modification'. Together they form a unique fingerprint.

Cite this