Abstract
The reliability of the component of a wind turbine is often highly dependent on defects introduced during the manufacturing process. In this paper a stochastic model is proposed for modeling these defects and the influence on the fatigue life is considered. Basically the defects assumed distributed by a Poisson process / field where the defects form clusters that consist of a parent defect and related defects around the parent defect. The fatigue life is dependent on the number, type, location and size of the defects in the component and is therefore quite uncertain and needs to be described by stochastic models. In this paper, the Poisson distribution for modeling of defects of component are considered and the surface and sub-surface defects categorized. Furthermore, a model to estimate the probability of failure by fatigue due to the defects is proposed. Moreover, the relation between defect distribution and fatigue life of component explained.
Originalsprog | Engelsk |
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Tidsskrift | I U T A M. Procedia |
Vol/bind | 13 |
Sider (fra-til) | 144–150 |
Antal sider | 7 |
ISSN | 2210-9838 |
DOI | |
Status | Udgivet - 2015 |
Begivenhed | IUTAM Symposium: Dynamical Analysis of Multibody Systems with Design Uncertainties - Stuttgart, Tyskland Varighed: 10 jun. 2014 → 13 jun. 2014 |
Konference
Konference | IUTAM Symposium |
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Land/Område | Tyskland |
By | Stuttgart |
Periode | 10/06/2014 → 13/06/2014 |
Bibliografisk note
IUTAM Symposium on "Dynamical Analysis of Multibody Systems with Design Uncertainties".Emneord
- Fatigue life
- Wind turbine
- Defect distribution