The operational capability of an in-service double girder bridge crane is assessed by Acoustic Emission (AE) monitoring technique. A network of AE sensors are applied to one beam of the crane bridge. From this perspective, AE time series are analyzed to reveal possible collapse precursors in different positions of the monitored beam. The results of the analysis demonstrate an asymmetric damage pattern with the criticality condition identified in a portion of the monitored structural element. This evidence can be interpreted as signature of initiation or propagation of fatigue cracks.

Fracture precursors in a working girder crane: AE natural-time and b-value time series analyses / Niccolini, Gianni; Lacidogna, Giuseppe; Carpinteri, Alberto. - In: ENGINEERING FRACTURE MECHANICS. - ISSN 0013-7944. - STAMPA. - 210:(2019), pp. 393-399. [10.1016/j.engfracmech.2018.05.029]

Fracture precursors in a working girder crane: AE natural-time and b-value time series analyses

Niccolini, Gianni;Lacidogna, Giuseppe;Carpinteri, Alberto
2019

Abstract

The operational capability of an in-service double girder bridge crane is assessed by Acoustic Emission (AE) monitoring technique. A network of AE sensors are applied to one beam of the crane bridge. From this perspective, AE time series are analyzed to reveal possible collapse precursors in different positions of the monitored beam. The results of the analysis demonstrate an asymmetric damage pattern with the criticality condition identified in a portion of the monitored structural element. This evidence can be interpreted as signature of initiation or propagation of fatigue cracks.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2731362
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