Structural Performance Tests of Down Scaled Composite Wind Turbine Blade using Embedded Fiber Bragg Grating Sensors

In this study, the structural performance tests, i.e., static tests and dynamic tests of the composite wind turbine blade, were carried out by using the embedded fiber Bragg grating (FBG) sensors. The composite wind turbine blade used in the test is the 1/23 scale of the 750 kW composite blade. In s...

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Veröffentlicht in:International journal of aeronautical and space sciences Jg. 12; H. 4; S. 346 - 353
Hauptverfasser: Kim, Sang-Woo, Kim, Eun-Ho, Rim, Mi-Sun, Shrestha, Pratik, Lee, In, Kwon, Il-Bum
Format: Journal Article
Sprache:Englisch
Veröffentlicht: 한국항공우주학회 01.12.2011
Schlagworte:
항공우주공학
Composite wind turbine blade
Fiber Bragg grating sensors
Modal tests
Bending tests
ISSN:2093-274X, 2093-2480
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Zusammenfassung:In this study, the structural performance tests, i.e., static tests and dynamic tests of the composite wind turbine blade, were carried out by using the embedded fiber Bragg grating (FBG) sensors. The composite wind turbine blade used in the test is the 1/23 scale of the 750 kW composite blade. In static tests, the deflections along the blade were evaluated. Evaluations were carried out with simple beam theory and quadratic fitting method by using the embedded FBG sensors to predict the structural behavior with respect to the load. The deflections were compared to those obtained from the laser displacement sensor and electric strain gauges. They showed good agreement. Modal tests were performed to investigate the dynamic characteristics using the embedded FBG sensors. The natural frequencies obtained from the FBG sensors corresponding to the nine mode shapes of the blade were compared to those from the laser Doppler vibrometer. They were found to be consistent with each other. Therefore, it is concluded that the embedded FBG sensors have a great capability for measuring the structural performances of the composite wind turbine blade when structural performance tests are carried out. KCI Citation Count: 1
Bibliographie:G704-SER000009560.2011.12.4.010
ISSN:2093-274X
2093-2480
DOI:10.5139/IJASS.2011.12.4.346