Dual-axis resonance testing of wind turbine blades
An apparatus (100) for fatigue testing test articles (104) including wind turbine blades. The apparatus (100) includes a test stand (110) that rigidly supports an end (106) of the test article (104). An actuator assembly (120) is attached to the test article (104) and is adapted for substantially concurrently imparting first and second forcing functions in first and second directions on the test article (104), with the first and second directions being perpendicular to a longitudinal axis. A controller (130) transmits first and second sets of displacement signals (160, 164) to the actuator assembly (120) at two resonant frequencies of the test system (104). The displacement signals (160, 164) initiate the actuator assembly (120) to impart the forcing loads to concurrently oscillate the test article (104) in the first and second directions. With turbine blades, the blades (104) are resonant tested concurrently for fatigue in the flapwise and edgewise directions.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-08GO28308
- Assignee:
- Alliance for Sustainable Energy, LLC (Golden, CO)
- Patent Number(s):
- 8,621,934
- Application Number:
- 12/747,458
- OSTI ID:
- 1117646
- Resource Relation:
- Patent File Date: 2008 Dec 09
- Country of Publication:
- United States
- Language:
- English
Test method, test rigs and control system
|
patent | May 2016 |
Vane arm testing rig
|
patent | July 2014 |
Similar Records
Base excitation testing system using spring elements to pivotally mount wind turbine blades
Static Proof Load Testing of the Sandia SWiFT 13m Blades