TY - GEN
T1 - Manufacturing and service application concerns that influence leading edge protection rain erosion performance in wind turbine blades
AU - Cortés, Enrique
AU - Sánchez, Fernando
AU - O'Carroll, Anthony
AU - Madramany, Borja
AU - Hardiman, Mark
AU - Young, Trevor M.
N1 - Publisher Copyright:
© CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Erosion damage, caused by repeated rain droplet impact on the leading edges of wind turbine blades, is a key cause for maintenance and reliability issues. Resin Infusion (RI) is used in wind energy blades where low weight and high mechanical performance materials are demanded. The surface coating plays a crucial role in the manufacturing and performance response. The Leading Edge Protection coating is usually moulded, painted or sprayed onto the blade surface during manufacture or during a repair infield, often in a number of layers. Adequate adhesion between these layers is required for mechanical performance and durability reasons. In the current work, an investigation into the rain erosion durability of various coatings has been undertaken. Mass loss measurements are used as the key metric in an effort to assess the response of changing manufacturing processing parameters. The adhesion and erosion is affected by a number of shock waves caused by the collapsing water droplet on impact [2]. The stress waves are transmitted to the substrate, so microstructural discontinuities in coating layers and interfaces play a key role on its degradation. Standard industrial systems are based on a multilayer system, with a high number of interfaces that tend to accelerate erosion by delamination. Analytical and numerical models are commonly used for lifetime prediction and to identify suitable coating and composite substrate combinations and their potential to reduce stress on the interface. In this research, the material parameters for the appropriate characterization of the coating-substrate interface are outlined by several laboratory tests, including Differential Scanning Calorimetry (DSC), pull-off testing, peeling-adhesion testing and nanoindentation testing. The rain erosion performance is assessed using an accelerated testing technique, whereby the test material is repeatedly impacted at high speed with water droplets in a Whirling Arm Rain Erosion Rig (WARER) [3,4].
AB - Erosion damage, caused by repeated rain droplet impact on the leading edges of wind turbine blades, is a key cause for maintenance and reliability issues. Resin Infusion (RI) is used in wind energy blades where low weight and high mechanical performance materials are demanded. The surface coating plays a crucial role in the manufacturing and performance response. The Leading Edge Protection coating is usually moulded, painted or sprayed onto the blade surface during manufacture or during a repair infield, often in a number of layers. Adequate adhesion between these layers is required for mechanical performance and durability reasons. In the current work, an investigation into the rain erosion durability of various coatings has been undertaken. Mass loss measurements are used as the key metric in an effort to assess the response of changing manufacturing processing parameters. The adhesion and erosion is affected by a number of shock waves caused by the collapsing water droplet on impact [2]. The stress waves are transmitted to the substrate, so microstructural discontinuities in coating layers and interfaces play a key role on its degradation. Standard industrial systems are based on a multilayer system, with a high number of interfaces that tend to accelerate erosion by delamination. Analytical and numerical models are commonly used for lifetime prediction and to identify suitable coating and composite substrate combinations and their potential to reduce stress on the interface. In this research, the material parameters for the appropriate characterization of the coating-substrate interface are outlined by several laboratory tests, including Differential Scanning Calorimetry (DSC), pull-off testing, peeling-adhesion testing and nanoindentation testing. The rain erosion performance is assessed using an accelerated testing technique, whereby the test material is repeatedly impacted at high speed with water droplets in a Whirling Arm Rain Erosion Rig (WARER) [3,4].
KW - Coatings
KW - Leading edge protection
KW - Rain erosion
KW - Wind turbine blades
UR - http://www.scopus.com/inward/record.url?scp=85084161141&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85084161141
T3 - ECCM 2018 - 18th European Conference on Composite Materials
BT - ECCM 2018 - 18th European Conference on Composite Materials
PB - Applied Mechanics Laboratory
T2 - 18th European Conference on Composite Materials, ECCM 2018
Y2 - 24 June 2018 through 28 June 2018
ER -