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TECHNICAL PAPERS

Effect of Mean Stress on the Damage of Wind Turbine Blades

[+] Author and Article Information
Herbert J. Sutherland

Sandia National Laboratories,* Albuquerque, NM 87185-0708

John F. Mandell

Montana State University, Bozeman, MT 59717

J. Sol. Energy Eng 126(4), 1041-1049 (Nov 18, 2004) (9 pages) doi:10.1115/1.1785160 History: Received January 29, 2004; Revised May 06, 2004; Online November 18, 2004
Copyright © 2004 by ASME
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References

Sutherland, H. J., 1999, On the Fatigue Analysis of Wind Turbines, SAND99-0089, Sandia National Laboratories, Albuquerque, NM, 132 p.
van Delft, D. R. V., de Winkel, G. D., and Joosse, P. A., “Fatigue Behavior of Fiberglass Wind Turbine Blade Material Under Variable Amplitude Loading,” 1997 ASME Wind Energy Symposium, AIAA/ASME, pp. 180–188.
Nijssen, R. P. L., van Delft, D. R. V., and van Wingerde, A. M., 2002 ASME Wind Energy Symposium, AIAA/ASME, pp. 10–18.
Mandell, J. F., Samborsky, D. D., Wahl, N. K., and Sutherland, H. J., Testing and Analysis of Low Cost Composite Materials Under Spectrum Loading and High Cycle Fatigue Conditions, Conference Paper, ICCM14, Paper # 1811, SME/ASC p. 10.
Mandell, J. F., and Samborsky, D. D., 1997, DOE/MSU Composite Material Fatigue Database: Test Methods, Materials, and Analysis, SAND97-3002, Sandia National Laboratories, Albuquerque, NM.
Mandell, J. F., Samborsky, D. D., and Cairns, D. S., 2002, Fatigue of Composite Material and Substructures for Turbine Blades, SAND2002-077, Sandia National Laboratories, Albuquerque, NM.
Sutherland, H. J., Jones, P. L., and Neal, B., 2001, “The Long-Term Inflow and Structural Test Program,” 2001 ASME Wind Energy Symposium, AIAA/ASME, pp. 162–172.
Sutherland,  H. J., 2002, “Analysis of the Structural and Inflow Data from the LIST Turbine,” J. Sol. Energy Eng., 124(2), pp. 432–445.
Mandell, J. F., Samborsky, D. D., Combs, D. W., Scott, M. E., and Cairns, D. S., 1998, Fatigue of Composite Material Beam Elements Representative of Wind Turbine Blade Substructure, NREL/SR-500-24379, National Renewable Energy Laboratory, Golden, Co.
Sutherland, H. J., Zayas, J. R., Sterns, A. J., and Neal, B., 2004, “Update of the Long-Term Inflow and Structural Test Program,” 2001 ASME Wind Energy Symposium, AIAA/ASME, in publication.
Kelley, N., Hand, M., Larwood, S., and McKenna, E., 2002, “The NREL Large-Scale Turbine Inflow and Response Experiment—Preliminary Results,” 2002 ASME Wind Energy Symposium, AIAA/ASME, pp. 412–426.
Sutherland, H. J., Kelley, N. D., and Hand, M. M., “Inflow and Fatigue Response of the NWTC Advanced Research Turbine,” 2003 ASME Wind Energy Symposium, AIAA/ASME, 2003, pp. 214–224.
Jackon, K., Dynamic Design, Davis, CA and M. Zuteck, MDZ Consulting, Clear Lake Shores, TX, personal communication.
Malcolm, D., GEC, Kirkland, WA, personal communication.
Buhl, M. L., Jr., 2001, CRUNCH User’s Guide, Ver. 2.61, NREL/NWTC, Golden, CO., 11 p.
Musial, W., Clark, M., Egging, N., and Zuteck, M., 1997, “A Comparison of Strength and Load-Based Methods for Testing Wind Turbine Blades,” 1997 ASME Wind Energy Symposium, AIAA/ASME, W. Musial and D. E. Berg, eds., p. 228.

Figures

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Goodman Diagrams (a) Linear Goodman Diagram (b) Bi-Linear Goodman Diagram (c) MSU/DoE Goodman Diagram for Thirteen R-Values for Database Material DD16, Fit with Equation 3
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The Micon 65/13M turbine at the Bushland Test Site
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Distribution of the 10-minute Data Records by Hub-Height Mean Wind Speed for the Bushland Turbine
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Fatigue Load Spectrum for the 11-13 m/s Wind Speed bin for the Bushland Turbine (a) Edge-Bending in the Root of Blade 1 (b) Flap-Bending in the Root of Blade 2
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Distribution of Data Records Used in the Analysis by Wind Speed Bin for the ART
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Typical Fatigue Spectra for Root Bending Moments, >17 m/s Wind Speed Bin for the ART (a) Edgewise Bending Moment (b) Flatwise Bending Moment
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Equivalent Fatigue Loads for the Bushland Turbine on the Tensile Bending Side (a) Edgewise Bending Moment (b) Flapwise Bending Moment
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Equivalent Fatigue Loads for the ART on the Tensile Bending Side (a) Edgewise Bending Moment (b) Flapwise Bending Moment
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Comparison of the EFL on the Tensile and Compressive Sides for the MSU/DoE Goodman Diagram (a) EFL for the Bushland Turbine (b) EFL for the ART
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Comparison of the Three Goodman Diagrams at 105 Cycles

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