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Damage estimates for European and U.S.sites using the U.S. high-cycle fatigue data base

Abstract

This paper uses two high-cycle fatigue data bases, one for typical U.S. blade materials and one for European materials, to analyze the service lifetime of a wind turbine blade subjected to the WISPER load spectrum for northern European sites and the WISPER protocol load spectrum for U.S. wind farm sites. The U.S. data base contains over 2200 data points that were obtained using coupon testing procedures. These data are used to construct a Goodman diagram that is suitable for analyzing wind turbine blades. This result is compared to the Goodman diagram derived from the European fatigue data base FACT. The LIFE2 fatigue analysis code for wind turbines is then used to predict the service lifetime of a turbine blade subjected to the two loading histories. The results of this study indicate that the WISPER load spectrum from northern European sites significantly underestimates the WISPER protocol load spectrum from a U.S. wind farm site, i.e., the WISPER load spectrum significantly underestimates the number and magnitude of the loads observed at a U.S. wind farm site. Further, the analysis demonstrate that the European and the U.S. fatigue material data bases are in general agreement for the prediction of tensile failures. However, for  More>>
Authors:
Sutherland, H J [1] 
  1. Wind Energy Technology, Sandia National Lab., Albuquerque, NM (United States)
Publication Date:
Sep 01, 1996
Product Type:
Conference
Report Number:
NEI-DK-2424; CONF-960267-
Reference Number:
SCA: 170602; PA: DK-96:001569; EDB-96:126085; SN: 96001645499
Resource Relation:
Conference: 11. International Energy Agency (IEA) research and development wind annex, Stuttgart (Germany), 1-2 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of IEA Joint Action. Wind turbine fatigue; Maribo Pedersen, B. [ed.]; PB: 108 p.
Subject:
17 WIND ENERGY; DATA BASE MANAGEMENT; FATIGUE; TURBINE BLADES; DYNAMIC LOADS; WIND TURBINES; DAMAGE; W CODES; SERVICE LIFE
OSTI ID:
276955
Research Organizations:
Danmarks Tekniske Univ., Lyngby (Denmark). Afd. for Fluid Mekanik
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE96777162; TRN: DK9601569
Availability:
OSTI as DE96777162
Submitting Site:
DK
Size:
pp. 55-62
Announcement Date:
Sep 12, 1996

Citation Formats

Sutherland, H J. Damage estimates for European and U.S.sites using the U.S. high-cycle fatigue data base. Denmark: N. p., 1996. Web.
Sutherland, H J. Damage estimates for European and U.S.sites using the U.S. high-cycle fatigue data base. Denmark.
Sutherland, H J. 1996. "Damage estimates for European and U.S.sites using the U.S. high-cycle fatigue data base." Denmark.
@misc{etde_276955,
title = {Damage estimates for European and U.S.sites using the U.S. high-cycle fatigue data base}
author = {Sutherland, H J}
abstractNote = {This paper uses two high-cycle fatigue data bases, one for typical U.S. blade materials and one for European materials, to analyze the service lifetime of a wind turbine blade subjected to the WISPER load spectrum for northern European sites and the WISPER protocol load spectrum for U.S. wind farm sites. The U.S. data base contains over 2200 data points that were obtained using coupon testing procedures. These data are used to construct a Goodman diagram that is suitable for analyzing wind turbine blades. This result is compared to the Goodman diagram derived from the European fatigue data base FACT. The LIFE2 fatigue analysis code for wind turbines is then used to predict the service lifetime of a turbine blade subjected to the two loading histories. The results of this study indicate that the WISPER load spectrum from northern European sites significantly underestimates the WISPER protocol load spectrum from a U.S. wind farm site, i.e., the WISPER load spectrum significantly underestimates the number and magnitude of the loads observed at a U.S. wind farm site. Further, the analysis demonstrate that the European and the U.S. fatigue material data bases are in general agreement for the prediction of tensile failures. However, for compressive failures, the two data bases are significantly different, with the U.S. data base predicting significantly shorter service lifetimes than the European data base. (au) 14 refs.}
place = {Denmark}
year = {1996}
month = {Sep}
}