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Wind turbine blade testing system using base excitation

Patent ·
OSTI ID:1128689
; ; ; ;
An apparatus (500) for fatigue testing elongate test articles (404) including wind turbine blades through forced or resonant excitation of the base (406) of the test articles (404). The apparatus (500) includes a testing platform or foundation (402). A blade support (410) is provided for retaining or supporting a base (406) of an elongate test article (404), and the blade support (410) is pivotally mounted on the testing platform (402) with at least two degrees of freedom of motion relative to the testing platform (402). An excitation input assembly (540) is interconnected with the blade support (410) and includes first and second actuators (444, 446, 541) that act to concurrently apply forces or loads to the blade support (410). The actuator forces are cyclically applied in first and second transverse directions. The test article (404) responds to shaking of its base (406) by oscillating in two, transverse directions (505, 507).
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):
8,677,827
Application Number:
12/747,487
OSTI ID:
1128689
Country of Publication:
United States
Language:
English

References (1)

Structural health monitoring of wind turbine blades
  • Rumsey, Mark A.; Paquette, Joshua A.
  • The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, SPIE Proceedings https://doi.org/10.1117/12.778324
conference May 2008

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