Evaluation of Dual Axis Resonant Testing
of Wind Turbine Blades

Greaves, P; Dominy, R; Ingram, G; Court, R

Abstract

A new method for the resonant fatigue testing of large wind turbine blades has been investigated. The method tests the blade in the flapwise and edgewise directions simultaneously, and it has been evaluated by comparing the Miner’s damage sum around the blade root after simulated testing and service life. Bending moments at the blade root were generated using wind turbine simulation software and the test loads were designed to cause the same amount of damage as the service life. The loads were converted to strain time histories using simple stress analysis techniques and then fatigue analysis was performed. The results show that dual axis resonant testing is an improvement over single axis testing.

Citation

of Wind Turbine Blades. In The European Academy of Wind Energy

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: 6th PhD Seminar on Wind Energy in Europe.
• Publication Date: 2010-09
• Deposit Date: Sep 30, 2010
• Series Title: 6th PhD Seminar on Wind Energy in Europe.
• Edition: 6
• Book Title: The European Academy of Wind Energy
• Public URL: https://durham-repository.worktribe.com/output/1158710