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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
https://doi.org/10.5194/wes-2017-15
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research articles
12 Apr 2017
Review status
This discussion paper is under review for the journal Wind Energy Science (WES).
Progressive Damage Modeling of Fiberglass/Epoxy Composites with Manufacturing Induced Waves Common to Wind Turbine Blades
Jared W. Nelson1, Trey W. Riddle2, and Douglas S. Cairns3 1SUNY New Paltz, Division of Engineering Programs, New Paltz, NY
2Sunstrand, LLC, Louisville, KY
3Montana State University, Dept. of Mechanical and Industrial Engineering, Bozeman, MT
Abstract. As part of the Blade Reliability Collaborative, the Montana State University Composites Group has investigated the effects of manufacturing defects. To better understand and predict these effects, various progressive damage modeling approaches were investigated. While the use of damage modeling has increased with improved computational capabilities, they are often performed for worst-case scenarios where damage or defects are replaced with notches or holes. To contribute to the establishment of a protocol understanding and quantifying the effects of these defects, a three-round study was performed using continuum, discrete, and combined damage modeling. This approach relied on a systematically comparing consistency, accuracy and predictive capability for each model. These models were constructed to match the coupons from, and compare the results to, the characterization and material testing study. A standard defect case was chosen and initially used for each modeling approach to perform the qualitative and quantitative comparisons. It was found that while each model was able to show certain attributes, the most consistent, accurate, and predictive model was based on a combined continuum/discrete method. Overall, the results indicate that this combined approach may provide insight into blade performance with known defects when used in conjunction with a probabilistic flaw framework.

Citation: Nelson, J. W., Riddle, T. W., and Cairns, D. S.: Progressive Damage Modeling of Fiberglass/Epoxy Composites with Manufacturing Induced Waves Common to Wind Turbine Blades, Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2017-15, in review, 2017.
Jared W. Nelson et al.
Jared W. Nelson et al.
Jared W. Nelson et al.

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Short summary
The Department of Energy sponsored, Sandia National Laboratory led, Blade Reliability Collaborative was formed to address wind turbine blade reliability. To better understand and predict these effects, various progressive damage modeling approaches were investigated built upon the characterization previously addressed. The results indicate that a combined continuum/discrete approach provides insight into reliability with known defects when used in conjunction with a probabilistic flaw framework.
The Department of Energy sponsored, Sandia National Laboratory led, Blade Reliability...
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