Fatigue Failure of Sandwich Beams with Wrinkle Defects Used for Wind Turbine Blades

Martin Klitgaard Leong; C.F. Hvejsel; Erik Lund; Ole Thybo Thomsen

Fatigue Failure of Sandwich Beams with Wrinkle Defects Used for Wind Turbine Blades

Martin Klitgaard Leong, C.F. Hvejsel, Erik Lund, Ole Thybo Thomsen

Solid and Computational Mechanics

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

Glass fiber face sheet/balsa wood core sandwich beams with out-of-plane fiber misalignments/wrinkle defects were subjected to in-plane fully reversed fatigue loading and the failure modes were documented. A fatigue life design limit was estimated using finite element analyses and the Northwestern University failure theory. The presence of the wrinkle defect significantly lowered the fatigue strength, but it was found that the test specimens could reach a pre-defined fatigue life with no signs of damage, by applying a fatigue load below 80% of the estimated design limit.

Original language	English
Title of host publication	Proceedings ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012
Number of pages	4
Publication date	2012
ISBN (Print)	978-88-88785-33-2
Publication status	Published - 2012
Event	ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012 - Venice, Italy Duration: 24 Jun 2012 → 28 Jun 2012

Conference

Conference	ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012
Country/Territory	Italy
City	Venice
Period	24/06/2012 → 28/06/2012

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Cite this

@inproceedings{50cf65ecef06439fb8fdc974f3474172,

title = "Fatigue Failure of Sandwich Beams with Wrinkle Defects Used for Wind Turbine Blades",

abstract = "Glass fiber face sheet/balsa wood core sandwich beams with out-of-plane fiber misalignments/wrinkle defects were subjected to in-plane fully reversed fatigue loading and the failure modes were documented. A fatigue life design limit was estimated using finite element analyses and the Northwestern University failure theory. The presence of the wrinkle defect significantly lowered the fatigue strength, but it was found that the test specimens could reach a pre-defined fatigue life with no signs of damage, by applying a fatigue load below 80% of the estimated design limit.",

author = "Leong, {Martin Klitgaard} and C.F. Hvejsel and Erik Lund and Thomsen, {Ole Thybo}",

year = "2012",

language = "English",

isbn = "978-88-88785-33-2",

booktitle = "Proceedings ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012",

note = "ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012 ; Conference date: 24-06-2012 Through 28-06-2012",

}

Fatigue Failure of Sandwich Beams with Wrinkle Defects Used for Wind Turbine Blades. / Leong, Martin Klitgaard; Hvejsel, C.F.; Lund, Erik et al.
Proceedings ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012. 2012.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Fatigue Failure of Sandwich Beams with Wrinkle Defects Used for Wind Turbine Blades

AU - Leong, Martin Klitgaard

AU - Hvejsel, C.F.

AU - Lund, Erik

AU - Thomsen, Ole Thybo

PY - 2012

Y1 - 2012

N2 - Glass fiber face sheet/balsa wood core sandwich beams with out-of-plane fiber misalignments/wrinkle defects were subjected to in-plane fully reversed fatigue loading and the failure modes were documented. A fatigue life design limit was estimated using finite element analyses and the Northwestern University failure theory. The presence of the wrinkle defect significantly lowered the fatigue strength, but it was found that the test specimens could reach a pre-defined fatigue life with no signs of damage, by applying a fatigue load below 80% of the estimated design limit.

AB - Glass fiber face sheet/balsa wood core sandwich beams with out-of-plane fiber misalignments/wrinkle defects were subjected to in-plane fully reversed fatigue loading and the failure modes were documented. A fatigue life design limit was estimated using finite element analyses and the Northwestern University failure theory. The presence of the wrinkle defect significantly lowered the fatigue strength, but it was found that the test specimens could reach a pre-defined fatigue life with no signs of damage, by applying a fatigue load below 80% of the estimated design limit.

M3 - Article in proceeding

SN - 978-88-88785-33-2

BT - Proceedings ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012

T2 - ECCM15 - 15Th European Conference On Composite Materials, Venice, Italy, 24-28 June 2012

Y2 - 24 June 2012 through 28 June 2012

ER -