Fracture and Fatigue of Thick Adhesive Joints in Wind Turbine Blade Structures

Cairns, Doug S.

doi:10.2514/6.2016-0755

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…T HE damage onset of the bond line is initiated by a cohesive failure [1] in the adhesive layer, called a tunneling crack, that propagates through the bordering fiber-reinforced polymer (FRP) laminae in the st plane is defined in Fig. 1c by means of the coordinate system; Cairns [2] investigated the crack initiation and propagation in thick adhesive joints under a uniaxial load. Samborsky et al [3] explored the fatigue crack growth of adhesive joints subjected to mixed modes.…”

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Impact of Site-Specific Thermal Residual Stress on the Fatigue of Wind-Turbine Blades

et al. 2020

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Impact of Site-Specific Thermal Residual Stress on the Fatigue of Wind-Turbine Blades

et al. 2020

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“…IOP Publishing doi:10.1088/1757-899X/1293/1/012035 2 The term "tunneling crack" refers to damage initiation of the bond line caused by cohesive failure [2]. Carins and Peterson [3] and Struzziero and Teuwen [4] have investigated thick adhesive joints in terms of crack initiation and propagation. Samborsky et al [5] studied mixed-mode fracture, crack growth characteristics, and fatigue growth resistance in thick adhesive joints between fiberglass laminates.…”

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Parametric and numerical Finite Element simulation of wind turbine blades subjected to thermal residual stresses

Ayoubi,

Rashvand,

Ayyobi

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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This study aims to contribute to the ongoing efforts to enhance the reliability and durability of wind turbine blades, a critical component in wind energy generation. Specifically, this research addresses the issue of tunneling cracking and severe damage that can occur in wind turbine blades due to cohesive failure of the trailing edge. To achieve this objective, the study employs a rigorous approach, utilizing a full three-dimensional (3D) modeling strategy with finite element analysis (FEA) to simulate the behavior of wind turbine blades. The effect of cohesive materials and layered simulation methods on the thermal residual stress and crack propagation is thoroughly investigated. In particular, the study assesses the influence of carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GFRP) materials on the phenomenon under consideration. In addition, the study undertakes a comprehensive parametric analysis to identify the independent effects of material properties and numerical simulation on thermal residual stress. Moreover, the research explores the behavior of the cohesive zone model in terms of thermal residual stress and crack propagation. The findings of this study have significant implications for researchers and practitioners in the wind energy industry. The study’s outcomes can aid in the development of improved materials and simulation techniques to mitigate thermal residual stress and prevent the occurrence of tunneling cracking and other types of damage in wind turbine blades. As such, this research contributes to the broader efforts to advance the reliability, efficiency, and sustainability of wind energy generation.

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“…1c). Cairns [12] investigated the crack initiation and propagation in thick adhesive joints under uni-axial load. Samborsky et al [13] explored the fatigue crack growth of adhesive joints subjected to mixed modes.…”

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