Materials of large wind turbine blades: Recent results in testing and modeling

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Materials of large wind turbine blades: Recent results in testing and modeling. / Mishnaevsky, Leon; Brøndsted, Povl; Nijssen, Rogier; Lekou, D.J.; Philippidis, T.P.

In: Wind Energy, Vol. 15, No. 1, 2012, p. 83-97.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Author

Mishnaevsky, Leon; Brøndsted, Povl; Nijssen, Rogier; Lekou, D.J.; Philippidis, T.P. / Materials of large wind turbine blades: Recent results in testing and modeling.

In: Wind Energy, Vol. 15, No. 1, 2012, p. 83-97.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Bibtex

@article{9031396e53e64e5386dc5240d5d35fdf,
title = "Materials of large wind turbine blades: Recent results in testing and modeling",
keywords = "Composite materials, Reliability, Wind turbine blades, Micromechanics, Fatigue damage, Testing, Light strong materials for energy purposes, Lette stærke materialer til energiformål",
publisher = "John/Wiley & Sons Ltd.",
author = "Leon Mishnaevsky and Povl Brøndsted and Rogier Nijssen and D.J. Lekou and T.P. Philippidis",
year = "2012",
doi = "10.1002/we.470",
volume = "15",
number = "1",
pages = "83--97",
journal = "Wind Energy",
issn = "1095-4244",

}

RIS

TY - JOUR

T1 - Materials of large wind turbine blades: Recent results in testing and modeling

A1 - Mishnaevsky,Leon

A1 - Brøndsted,Povl

A1 - Nijssen,Rogier

A1 - Lekou,D.J.

A1 - Philippidis,T.P.

AU - Mishnaevsky,Leon

AU - Brøndsted,Povl

AU - Nijssen,Rogier

AU - Lekou,D.J.

AU - Philippidis,T.P.

PB - John/Wiley & Sons Ltd.

PY - 2012

Y1 - 2012

N2 - The reliability of rotor blades is the pre-condition for the development and wide use of large wind turbines. In order to accurately predict and improve the wind turbine blade behavior, three main aspects of the reliability and strength of rotor blades were considered: (i) development of methods for the experimental determination of reliable material properties used in the design of wind turbine blades and experimental validation of design models, (ii) development of predictive models for the life prediction, prediction of residual strength and failure probability of the blades and (iii) analysis of the effect of the microstructure of wind turbine blade composites on their strength and ways of microstructural optimization of the materials. By testing reference coupons, the effect of testing parameters (temperature and frequency) on the lifetime of blade composites was investigated, and the input data for advanced design of wind turbine blades were collected. For assessing the residual strength and stiffness of wind turbine blades subjected to irregular cyclic loads, a shell-based finite element numerical methodology was developed, taking into account the non-linear response of plies, and experimentally validated. Two methods of structural reliability estimation of the blade, which take into account the stochastic nature of the anisotropic material properties and loads, were developed on the basis of the response surface method and the Edgeworth expansion technique, respectively. The effects of fiber clustering, misalignments, interface properties and other factors on the strength and lifetime of the wind turbine blade materials were investigated in the micromechanical finite element simulations. The results described in this paper stem from the Rotor Structure and Materials task of the UPWIND project. Copyright © 2011 John Wiley & Sons, Ltd.

AB - The reliability of rotor blades is the pre-condition for the development and wide use of large wind turbines. In order to accurately predict and improve the wind turbine blade behavior, three main aspects of the reliability and strength of rotor blades were considered: (i) development of methods for the experimental determination of reliable material properties used in the design of wind turbine blades and experimental validation of design models, (ii) development of predictive models for the life prediction, prediction of residual strength and failure probability of the blades and (iii) analysis of the effect of the microstructure of wind turbine blade composites on their strength and ways of microstructural optimization of the materials. By testing reference coupons, the effect of testing parameters (temperature and frequency) on the lifetime of blade composites was investigated, and the input data for advanced design of wind turbine blades were collected. For assessing the residual strength and stiffness of wind turbine blades subjected to irregular cyclic loads, a shell-based finite element numerical methodology was developed, taking into account the non-linear response of plies, and experimentally validated. Two methods of structural reliability estimation of the blade, which take into account the stochastic nature of the anisotropic material properties and loads, were developed on the basis of the response surface method and the Edgeworth expansion technique, respectively. The effects of fiber clustering, misalignments, interface properties and other factors on the strength and lifetime of the wind turbine blade materials were investigated in the micromechanical finite element simulations. The results described in this paper stem from the Rotor Structure and Materials task of the UPWIND project. Copyright © 2011 John Wiley & Sons, Ltd.

KW - Composite materials

KW - Reliability

KW - Wind turbine blades

KW - Micromechanics

KW - Fatigue damage

KW - Testing

KW - Light strong materials for energy purposes

KW - Lette stærke materialer til energiformål

U2 - 10.1002/we.470

DO - 10.1002/we.470

JO - Wind Energy

JF - Wind Energy

SN - 1095-4244

IS - 1

VL - 15

SP - 83

EP - 97

ER -