Abstract
The trailing edge (TE) failure of a commercial wind turbine blade (WBT) is investigated in this article. The effect of adhesive thickness and band width on the TE failure is one of the most important issues in WTB production governing the integrity and soundness of the WTB structure. Different static load cases of a WTB are identified under various operating conditions as a case study. Static analysis is performed on a full 3-D finite element model of the blade and the critical region of its TE is determined. Then, sub-part modeling is performed focusing on the critical region of the TE. Adhesive joint in the constructed model is modeled using cohesive zone modeling (CZM). The failure of the adhesive joint with different dimensions of adhesive is examined under normal wind condition and gust condition. Taking into account the production limitations, the proper dimensions of the adhesive withstanding different conditions of the WTB are extracted.
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