Mechanical characterization and damage assessment of thick adhesives for wind turbine blades using acoustic emission and digital image correlation techniques

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[1] Zarouchas, Dimitrios
[2] Van Hemelrijck, Danny
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Zarouchas, D. (dimitrios.zarouchas@vub.ac.be) | 1600年 / Taylor and Francis Ltd.卷 / 28期
关键词：
Adhesives play a key role in the structural integrity of the Wind Turbine Blades as they are one of the main load carrying materials. A deep knowledge of the adhesives' mechanical behaviour in terms of failure mechanisms and damage processes enhances the attempt to optimize the blade design. Therefore; a comprehensive experimental programme was performed in order to determine the static mechanical properties of the adhesives. Ultimate tensile strength; ultimate compression strength; ultimate shear strength and the elastic properties of the adhesive specimens were determined through tensile and compression tests on dogbone specimens and single-lap bonded joints. The Acoustic Emission (AE) technique was used to relate the acoustic activity in the specimens to their damage state. More specifically; a frequency-based methodology; analysing the AE data; was used for the identification of the different damage mechanisms into the material during the loading. In addition; Digital Image Correlation technique; as a full-field technique; was used to measure displacements and deformations. © 2012 © 2012 Taylor & Francis;
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页码：14 / 15
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