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Fatigue Life of Megawatt-Scale Composite Wind Turbine Blades with Shallow-Angled Laminates
- Authors
- Hayat, K.; Ha, Sung Kyu; Sultan, Tipu; Ahmad, Zeshan
- Issue Date
- Sep-2019
- Publisher
- SPRINGER
- Keywords
- composite blades; megawatt-scale wind turbines; fatigue life; shallow-angled laminates
- Citation
- Mechanics of Composite Materials, v.55, no.4, pp.483 - 494
- Indexed
- SCIE
SCOPUS
- Journal Title
- Mechanics of Composite Materials
- Volume
- 55
- Number
- 4
- Start Page
- 483
- End Page
- 494
- ISSN
- 0191-5665
- Abstract
- The fatigue life of megawatt-scale composite wind turbine blades implemented with shallow-angled laminates is investigated. Full dynamic simulations of a 5-MW 3-bladed horizontal-axis wind turbine were carried out to estimate the incident fatigue loads. The fatigue stress histories experienced by lay up materials were then computed using a finite-element model of the composite blade developed to ply-level details. Thereafter, the fatigue life of blade was estimated considering the 100% availability of the turbine for the site-specific annual wind distribution related to the wind turbine class IB. It is demonstrated that the application of shallow-angled laminates leads to a more durable design.
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