Fatigue cracks in the blade skins of the Millville Wind Turbine Generator were fractographically analyzed. It is believed they were caused by large flapwise deflections during a wind storm on December 4, 1978. The deflections caused the skin to buckle, which initiated rapidly growing fatigue cracks. Propagation continued to the leading edge, moving radially inward and outward along the leading edge radius. Communication between Rockwell and Millville resulted in a modified blade design which incorporates several corrective techniques.
Publisher Info:
Rockwell International Corp., Golden, CO (USA). Rocky Flats Plant
Place of Publication:
Golden, Colorado
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Description
Fatigue cracks in the blade skins of the Millville Wind Turbine Generator were fractographically analyzed. It is believed they were caused by large flapwise deflections during a wind storm on December 4, 1978. The deflections caused the skin to buckle, which initiated rapidly growing fatigue cracks. Propagation continued to the leading edge, moving radially inward and outward along the leading edge radius. Communication between Rockwell and Millville resulted in a modified blade design which incorporates several corrective techniques.
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Waldon, C. A.; Carr, M. J. & Grotzky, V. K.Millville Wind Turbine Generator: failure analysis and corrective design modification,
report,
July 1, 1979;
Golden, Colorado.
(https://digital.library.unt.edu/ark:/67531/metadc1092349/:
accessed June 10, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.