Elastic-plastic fracture toughness and fatigue crack growth resistance of full penetration butt welds were experimentally investigated. The obtained results were used to predict the critical crack size and the time to structural collapse of weld joints typically adopted in tubular towers of windmills. For this purpose, heavy in-service loading conditions were considered. In this way, it was possible to quantify the minimum crack size that shall be detected by a structural health monitoring system, in order to maintain the structure within a reasonable time interval.
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Titolo: | Structural health monitoring of wind towers: residual life estimation |
Autori: | Benedetti, Matteo; Fontanari, Vigilio |
Autori Unitn: | |
Titolo del volume contenente il saggio: | Proceedings of the 4th International Conference on Crack Paths (CP2012) |
Luogo di edizione: | Parma |
Casa editrice: | University of Parma |
Anno di pubblicazione: | 2012 |
Handle: | http://hdl.handle.net/11572/93645 |
Appare nelle tipologie: | 04.1 Saggio in atti di convegno (Paper in proceedings) |