Articles | Volume 10, issue 7
https://doi.org/10.5194/wes-10-1249-2025
https://doi.org/10.5194/wes-10-1249-2025
Research article
 | 
07 Jul 2025
Research article |  | 07 Jul 2025

Non-proportionality analysis of multi-axial fatigue stress histories in trailing edge adhesive joints of wind turbine rotor blades

Claudio Balzani and Pablo Noever Castelos

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Cited articles

Adams, R. D.: Adhesive bonding: Science, technology and applications, second edition, Elsevier Ltd., https://doi.org/10.1016/C2019-0-00395-0, 2021. a, b
Anes, V., Reis, L., Li, B., and de Freitas, M.: New approach to evaluate non-proportionality in multiaxial loading conditions, Fatigue Fract. Eng. M., 37, 1338–1354, https://doi.org/10.1111/ffe.12192, 2014. a
Antoniou, A., Rosemeier, M., Tazefidan, K., Krimmer, A., and Wolken-Möhlmann, G.: Impact of site-specific thermal residual stress on the fatigue of wind-turbine blades, AIAA J., 58, 4781–4793, https://doi.org/10.2514/1.J059388, 2020. a
Antoniou, A. E., Vespermann, M. M., Sayer, F., and Krimmer, A.: Life prediction analysis of thick adhesive bond lines under variable amplitude fatigue loading, in: Proceedings of the 18th European Conference on Composite Materials (ECCM18), 24–28 June, Athens, Greece, 1–8, ISBN 9781510896932, 2018. a
Ataya, S. and Ahmed, M. M.: Damages of wind turbine blade trailing edge: Forms, location, and root causes, Eng. Fail. Anal., 35, 480–488, https://doi.org/10.1016/j.engfailanal.2013.05.011, 2013. a, b, c
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Short summary
Wind turbine rotor blades consist of subcomponents that are glued together. Such connections are subject to fatigue loads. This paper analyzes the fatigue load characteristics of three different wind turbine rotor blades in trailing edge adhesive joints. It is shown that the fatigue loads have measurable degrees of non-proportionality and that the choice of the procedure to calculate the fatigue damage is crucial for designing reliable blades.
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