Library filed under Structural Failure

400-foot wind turbine falls in Huron County

A nearly 400-foot, 485,000-pound wind turbine has fallen down on a farm field at the site of the state’s first utility-scale wind project. Oliver Township Supervisor Larry Krohn said it came down at about 5:20 a.m. in the middle of the field. ...The fall marks the second incident in less than a week in which a wind turbine has failed.
25 Feb 2016

Analysis: Siemens acts on turbine collapse with more checks

Catastrophic failure is widely defined as the complete, sudden, often unexpected breakdown in a machine or other system. This winter, there have been four such events reported across the wind industry. With regular wind turbine service and maintenance and the possibility of sophisticated condition monitoring, how is such an embarrassing failure — appearing as it seems out of the blue — still possible?
12 Feb 2016

113-foot blade falls off Fenner windmill; Bolt failure

Wind_turbine_fenner_thumb There were two big booms when it happened, one when it hit and then another when it probably flipped over,” said Fenner resident Dick Foringer, who lives about 900 feet away. ...Editor's note: Mr. Foringer confirmed by phone that the initial impact crater was 323 feet from the base of the turbine. The blade then bounced, and ultimately landed 471 feet from the base. 
12 Feb 2016

Turbine burn and collapse

This video was posted on Facebook and YouTube. Few details are provided about the incident including the location and timing of the event. (It is not clear the incident occurred in New Zealand.) Nonetheless, the video demonstrates the type of danger a turbine can pose when sited too close to where people may live or gather.
15 Jan 2016

http://www.windaction.org/posts?p=11&topic=Structural+Failure
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