Local fatigue behavior in tapered areas of large offshore wind turbine blades

Seyed Aydin Raeis Hosseiny; Johnny Jakobsen

doi:10.1088/1757-899X/139/1/012022

Local fatigue behavior in tapered areas of large offshore wind turbine blades

Seyed Aydin Raeis Hosseiny, Johnny Jakobsen

Solid and Computational Mechanics

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

3 Citationer (Scopus)

248 Downloads (Pure)

Abstract

Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.

Originalsprog	Engelsk
Titel	37th Risø International Symposium on Materials Science
Redaktører	B. Madsen, A. Biel, Y. Kusano, H. Lilholt, L.P. Mikkelsen, L. Mishnaevsky Jr., B.F. Sørensen
Antal sider	8
Forlag	IOP Publishing
Publikationsdato	2 sep. 2016
Sider	237-244
Artikelnummer	012022
ISBN (Trykt)	978-87-93278-94-3
DOI	https://doi.org/10.1088/1757-899X/139/1/012022
Status	Udgivet - 2 sep. 2016
Begivenhed	37th Risø International Symposium on Materials Science 5–8 September 2016, Risø, Denmark - Department of Wind Energy Technical University of Denmark Risø Campus , Roskilde, Danmark Varighed: 5 sep. 2016 → 9 sep. 2016 http://www.vindenergi.dtu.dk/english/Research/Conferences/Symp37

Konference

Konference	37th Risø International Symposium on Materials Science 5–8 September 2016, Risø, Denmark
Lokation	Department of Wind Energy Technical University of Denmark Risø Campus
Land/Område	Danmark
By	Roskilde
Periode	05/09/2016 → 09/09/2016
Internetadresse	http://www.vindenergi.dtu.dk/english/Research/Conferences/Symp37

Navn	IOP Conference Series: Materials Science and Engineering
Nummer	1
Vol/bind	139
ISSN	1757-8981

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10.1088/1757-899X/139/1/012022Licens: CC BY 3.0

Open Access articleForlagets udgivne version, 2,69 MBLicens: CC BY 3.0

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Citationsformater

Raeis Hosseiny, S. A., & Jakobsen, J. (2016). Local fatigue behavior in tapered areas of large offshore wind turbine blades. I B. Madsen, A. Biel, Y. Kusano, H. Lilholt, L. P. Mikkelsen, L. Mishnaevsky Jr., & B. F. Sørensen (red.), 37th Risø International Symposium on Materials Science (s. 237-244). Artikel 012022 IOP Publishing. https://doi.org/10.1088/1757-899X/139/1/012022

Raeis Hosseiny, Seyed Aydin ; Jakobsen, Johnny. / Local fatigue behavior in tapered areas of large offshore wind turbine blades. 37th Risø International Symposium on Materials Science. red. / B. Madsen ; A. Biel ; Y. Kusano ; H. Lilholt ; L.P. Mikkelsen ; L. Mishnaevsky Jr. ; B.F. Sørensen. IOP Publishing, 2016. s. 237-244 (IOP Conference Series: Materials Science and Engineering; Nr. 1, Bind 139).

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abstract = "Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.",

keywords = "Fatigue analysis, Damage Criteria, Failure Mode Analysis, Wind turbine blades : Composite materials : Delamination buckling : Adhesive failure :Fracture mechanics",

author = "{Raeis Hosseiny}, {Seyed Aydin} and Johnny Jakobsen",

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publisher = "IOP Publishing",

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Raeis Hosseiny, SA & Jakobsen, J 2016, Local fatigue behavior in tapered areas of large offshore wind turbine blades. i B Madsen, A Biel, Y Kusano, H Lilholt, LP Mikkelsen, L Mishnaevsky Jr. & BF Sørensen (red), 37th Risø International Symposium on Materials Science., 012022, IOP Publishing, IOP Conference Series: Materials Science and Engineering, nr. 1, bind 139, s. 237-244, 37th Risø International Symposium on Materials Science 5–8 September 2016, Risø, Denmark, Roskilde, Danmark, 05/09/2016. https://doi.org/10.1088/1757-899X/139/1/012022

Local fatigue behavior in tapered areas of large offshore wind turbine blades. / Raeis Hosseiny, Seyed Aydin; Jakobsen, Johnny.
37th Risø International Symposium on Materials Science. red. / B. Madsen; A. Biel; Y. Kusano; H. Lilholt; L.P. Mikkelsen; L. Mishnaevsky Jr.; B.F. Sørensen. IOP Publishing, 2016. s. 237-244 012022 (IOP Conference Series: Materials Science and Engineering; Nr. 1, Bind 139).

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

TY - GEN

T1 - Local fatigue behavior in tapered areas of large offshore wind turbine blades

AU - Raeis Hosseiny, Seyed Aydin

AU - Jakobsen, Johnny

N1 - @article{1757-899X-139-1-012022, author={Seyed Aydin Raeis Hosseiny and Johnny Jakobsen}, title={Local fatigue behavior in tapered areas of large offshore wind turbine blades}, journal={IOP Conference Series: Materials Science and Engineering}, volume={139}, number={1}, pages={012022}, url={http://stacks.iop.org/1757-899X/139/i=1/a=012022}, year={2016}, abstract={Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.} }

PY - 2016/9/2

Y1 - 2016/9/2

N2 - Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.

AB - Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.

KW - Fatigue analysis

KW - Damage Criteria

KW - Failure Mode Analysis

KW - Wind turbine blades : Composite materials : Delamination buckling : Adhesive failure :Fracture mechanics

U2 - 10.1088/1757-899X/139/1/012022

DO - 10.1088/1757-899X/139/1/012022

M3 - Article in proceeding

SN - 978-87-93278-94-3

T3 - IOP Conference Series: Materials Science and Engineering

SP - 237

EP - 244

BT - 37th Risø International Symposium on Materials Science

A2 - Madsen, B.

A2 - Biel, A.

A2 - Kusano, Y.

A2 - Lilholt, H.

A2 - Mikkelsen, L.P.

A2 - Mishnaevsky Jr., L.

A2 - Sørensen, B.F.

PB - IOP Publishing

T2 - 37th Risø International Symposium on Materials Science 5–8 September 2016, Risø, Denmark

Y2 - 5 September 2016 through 9 September 2016

ER -

Raeis Hosseiny SA, Jakobsen J. Local fatigue behavior in tapered areas of large offshore wind turbine blades. I Madsen B, Biel A, Kusano Y, Lilholt H, Mikkelsen LP, Mishnaevsky Jr. L, Sørensen BF, red., 37th Risø International Symposium on Materials Science. IOP Publishing. 2016. s. 237-244. 012022. (IOP Conference Series: Materials Science and Engineering; Nr. 1, Bind 139). doi: 10.1088/1757-899X/139/1/012022

Local fatigue behavior in tapered areas of large offshore wind turbine blades

Abstract

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