Investigation on acoustic emission source of bridge crane

Abstract

In order to draft an acoustic emission testing standard for bridge cranes, the characteristics of acoustic emission sources were studied by performing AE tests for more than 20 bridge cranes. The attenuation curve and linear locations of the AE signals on the box beam were investigated. The results indicate that the linear location method can be used effectively in AE source location in the box beam structure. AE sources of bridge cranes arise mainly from cracking, plastic deformation, structural friction and the noise of vehicle and trolley. The characteristics of each acoustic emission source are shown respectively in this paper.