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Title: In-field use of laser Doppler vibrometer on a wind turbine blade

Abstract

One of our primary goals was to determine how well a laser Doppler vibrometer (LDV) could measure the structural dynamic response of a wind turbine that was parked in the field. We performed a series of preliminary tests in the lab to determine the basic limitations of the LDV for this application. We then instrumented an installed parked horizontal axis wind turbine with accelerometers to determine the natural frequencies, damping, and mode shapes of the wind turbine and rotor as a baseline for the LDV and our other tests. We also wanted to determine if LDV modal information could be obtained from a naturally (wind) excited wind turbine. We compared concurrently obtained accelerometer and LDV data in an attempt to assess the quality of the LDV data. Our test results indicate the LDV can be successfully used in the field environment of an installed wind turbine, but with a few restrictions. We were successful in obtaining modal information from a naturally (wind) excited wind turbine in the field, but the data analysis requires a large number of averaged data sets to obtain reasonable results. An ultimate goal of this continuing project is to develop a technique that will monitor themore » health of a structure, detect damage, and hopefully predict an impending component failure.« less

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
560803
Report Number(s):
SAND-97-2745C; AIAA-98-0048; CONF-980104-
ON: DE98000844; TRN: 98:000283
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 17. ASME wind energy symposium, Reno, NV (United States), 12-15 Jan 1998; Other Information: PBD: 1998
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ACCELEROMETERS; WIND TURBINES; MEASURING INSTRUMENTS; TURBINE BLADES; FATIGUE

Citation Formats

Rumsey, M, Hurtado, J, and Hansche, B. In-field use of laser Doppler vibrometer on a wind turbine blade. United States: N. p., 1998. Web.
Rumsey, M, Hurtado, J, & Hansche, B. In-field use of laser Doppler vibrometer on a wind turbine blade. United States.
Rumsey, M, Hurtado, J, and Hansche, B. 1998. "In-field use of laser Doppler vibrometer on a wind turbine blade". United States. https://www.osti.gov/servlets/purl/560803.
@article{osti_560803,
title = {In-field use of laser Doppler vibrometer on a wind turbine blade},
author = {Rumsey, M and Hurtado, J and Hansche, B},
abstractNote = {One of our primary goals was to determine how well a laser Doppler vibrometer (LDV) could measure the structural dynamic response of a wind turbine that was parked in the field. We performed a series of preliminary tests in the lab to determine the basic limitations of the LDV for this application. We then instrumented an installed parked horizontal axis wind turbine with accelerometers to determine the natural frequencies, damping, and mode shapes of the wind turbine and rotor as a baseline for the LDV and our other tests. We also wanted to determine if LDV modal information could be obtained from a naturally (wind) excited wind turbine. We compared concurrently obtained accelerometer and LDV data in an attempt to assess the quality of the LDV data. Our test results indicate the LDV can be successfully used in the field environment of an installed wind turbine, but with a few restrictions. We were successful in obtaining modal information from a naturally (wind) excited wind turbine in the field, but the data analysis requires a large number of averaged data sets to obtain reasonable results. An ultimate goal of this continuing project is to develop a technique that will monitor the health of a structure, detect damage, and hopefully predict an impending component failure.},
doi = {},
url = {https://www.osti.gov/biblio/560803}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 1998},
month = {Thu Dec 31 00:00:00 EST 1998}
}

Conference:
Other availability
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