To improve failure resistance in joint design of composite wind turbine blade materials

Al-Khudairi, O.; Ghasemnejad, H.

doi:10.1016/j.renene.2015.04.015

Cited by 20 publications

(6 citation statements)

References 23 publications

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“…A few studies [8,9] have investigated the failure of composite box beams that are made of monolithic composite laminates. In wind turbine blades, composite box beams consist of both monolithic composite laminates and sandwich laminates as well as adhesive joints that connect them.…”

Section: Figure 1 Examples Of Structural Nonlinearities That Might Bmentioning

confidence: 99%

Modeling multiple failures of composite box beams used in wind turbine blades

Xiao

Tang

Yang

2019

Composite Structures

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Large composite structures, such as composite wind turbine blades, may exhibit multiple failure modes that challenge the modeling strategies and methodologies designers adopt in finite element (FE) analysis. This study develops a comprehensive and general FE modeling method to simulate interactive failure process of composite box beams used in wind turbine blades. The composite box beams are the primary loading-carrying members and could show different failure modes due to competing failure mechanisms. A continuumdamage mechanics based progressive failure analysis approach is developed in three-dimensional stress/strain domain to simulate failure behavior of the box beams. Structural nonlinearities associated with geometry, materials and contact are included. The material failures considered in this study are composite failure with three material failure modes, foam core crushing and adhesive failure. The in-plane shear stress versus strain relation of unidirectional composites is included in the material damage model. Comprehensive comparisons are made between numerical simulations and experimental observations with respect to strain response, ultimate loads, failure modes and failure progress. The modeling approach is found to be capable of predicting both strength and failure of box beams with reasonable accuracy and it exhibits great potential to predict failure response of composite wind turbine blades.

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Section: Figure 1 Examples Of Structural Nonlinearities That Might Bmentioning

confidence: 99%

Modeling multiple failures of composite box beams used in wind turbine blades

Xiao

Tang

Yang

2019

Composite Structures

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“…They carried out the DCB test to analyze Mode-I and the Single over Leg Bending test (SLB) to analyze Mode-II. The failure performance of composite materials in a substructure of a rotor blade was studied by Al-Khudairi and Ghasemnejad [ 35 ], using Kevlar, carbon and glass fibers. Wang and Soutis [ 36 ] carried out mechanical tests on a T-joint for wind turbine blade applications.…”

Section: Introductionmentioning

confidence: 99%

Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades

et al. 2021

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One of the materials that is used widely for wind turbine blade manufacturing are fiber-reinforced composites. Although glass fiber reinforcement is the most used in wind turbine blades, the use of carbon fiber allows larger blades to be manufactured due to their better mechanical characteristics. Some turbine manufacturers are using carbon fiber in the most critical parts of the blade design. The larger rotors are exposed to complex loading conditions in service. One of the most relevant structures on a wind turbine blade is the spar cap. It is usually manufactured by means of unidirectional laminates, and one of its major failures is the delamination. The determination of material features that influence delamination initiation and advance by appropriate testing is a fundamental topic for the study of composite delamination. The fracture behavior is studied across coupons of carbon fiber reinforcement epoxy laminates. Fifteen different test conditions have been analyzed. Fracture surfaces for different mode ratios have been explored using optical microscope and scanning electron microscope. Experimental results shown in the paper for critical fracture parameters agree with the theoretically expected values. Therefore, this experimental procedure is suitable for wind turbine blade material characterizing at the initial coupon-scale research level.

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“…It is anticipated that by 2020 it will increment to 10% of worldwide power creation. [1,2] The American Wind Energy Association revealed in 2010 that creation of little flat hub wind turbines would increment quickly later on because of gigantic request. For the order of level hub twist turbines, there is no settled standard.…”

Section: Introductionmentioning

confidence: 99%

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2017

IJERA

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Wind turbine is a standout amongst the most imperative wellsprings of renewable vitality. Wind turbine extricate active vitality from the wind. A little wind turbine cutting edge was composed and examined in this work. The power execution of little flat hub wind turbines was mimicked in detail utilizing altered blade element momentum methods (BEM). Another sharp edge was planned utilizing diverse assault points (i.e.0 o , 5 o , 10 o ), distinctive speed (4m/s, 5m/s and 12m/s) and rotor span (0.5m and 1m). From this we discover harmony length and power yield hypothetically. Likewise, we chose material for proposed sharp edge.

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To improve failure resistance in joint design of composite wind turbine blade materials

Cited by 20 publications

References 23 publications

Modeling multiple failures of composite box beams used in wind turbine blades

Modeling multiple failures of composite box beams used in wind turbine blades

Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades

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