Delamination Detection in Composite T-Joints of Wind Turbine Blades using Microwaves

Advanced Composites Letters

Article

Zhen Li¹  Constantinos Soutis²  Arthur Haigh³  Robin Sloan³  Noushin Karimian⁴  Andrew Gibson⁴ 

[1] Aerospace Research Institute, Manchester, M13 9PL, UK;Aerospace Research Institute, Manchester, M13 9PL, UK;School of Mechanical, Aerospace and Civil Engineering The University of Manchester, Manchester, M13 9PL, UK;School of Electrical and Electronic Engineering, Manchester, M13 9PL, UK;School of Mechanical, Aerospace and Civil Engineering The University of Manchester, Manchester, M13 9PL, UK;

关键词: wind turbine blade;    T-joints;    delamination;    non-destructive testing;    microwaves;   

DOI  :  10.1177/096369351602500401

 received in 2016-02-02, accepted in 2016-06-02,  发布年份 2016

来源: Sage Journals

【 摘 要 】

The wind turbine is playing an increasingly important role in the generation of green electricity. The structural integrity and maintenance of the wind turbine blade is a critical issue in service due to the harsh operating environments. In this paper, the delamination in glass fibre composite joints of a wind turbine blade is detected using the non-contact microwave imaging with an open-ended waveguide. The existence and extent of the delaminated region could be found from the generated images. Thickness variation and the presence of the web can be identified as well. The optimum inspection frequency range is investigated, which offers a reference for future applications. By comparison, the phase profiling provided by the scanning shows better performance for the delamination detection rather than the magnitude profiling.

【 授权许可】

Unknown   
© 2016 SAGE Publications Ltd

【 图 表 】

Figure 1.