University of Manchester

Understanding evolution of fatigue damage in GFRP (Extension of Project 464)

Ying Wang

Scientific Case

This project is part of the MXIF-DTU collaboration within the CINEMA project.
Wind turbine blades are subjected to a very high number of load cycles (108-109) during their life-time of around 20-30 years. Therefore, material fatigue is one of the main limiting factors against designing longer blades. Despite that glass fibres show very limited sensitivity to fatigue loading, uni-directional glass fibre reinforced polymer composite (GFRP) used in the wind turbine blade industry is prone to fail in fatigue.
Previous scans demonstrated the capability of staining in enhancing fatigue damage detection in GFRP. A systematic ex-situ study of fatigue damage evolution will be carried out – fatigue test of GFRP sample will be interrupted for staining and CT imaging at multiple stages through its fatigue life. A multiscale imaging strategy will be used – full-scan on Heliscan and ROI-scan on Versa.

Experiment Design

Scanners and Rigs
Xradia VersaXCT
Not Required

Sample & Safety

Glass fibre/polyester composite
Low Hazard

Scan Records

Project Report