7
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Cluster analysis of stress corrosion mechanisms for steel wires used in bridge cables through acoustic emission particle swarm optimization.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Stress corrosion is the major failure type of bridge cable damage. The acoustic emission (AE) technique was applied to monitor the stress corrosion process of steel wires used in bridge cable structures. The damage evolution of stress corrosion in bridge cables was obtained according to the AE characteristic parameter figure. A particle swarm optimization cluster method was developed to determine the relationship between the AE signal and stress corrosion mechanisms. Results indicate that the main AE sources of stress corrosion in bridge cables included four types: passive film breakdown and detachment of the corrosion product, crack initiation, crack extension, and cable fracture. By analyzing different types of clustering data, the mean value of each damage pattern's AE characteristic parameters was determined. Different corrosion damage source AE waveforms and the peak frequency were extracted. AE particle swarm optimization cluster analysis based on principal component analysis was also proposed. This method can completely distinguish the four types of damage sources and simplifies the determination of the evolution process of corrosion damage and broken wire signals.

          Related collections

          Author and article information

          Journal
          Ultrasonics
          Ultrasonics
          Elsevier BV
          1874-9968
          0041-624X
          May 2017
          : 77
          Affiliations
          [1 ] School of Civil Engineering, Dalian University of Technology, Dalian 116024, China.
          [2 ] Fujian Academy of Building Research, Fuzhou 350025, China. Electronic address: ywluck@qq.com.
          [3 ] Fujian Academy of Building Research, Fuzhou 350025, China.
          Article
          S0041-624X(17)30035-5
          10.1016/j.ultras.2017.01.012
          28167317
          d99ccc0f-5272-4a0f-99b9-0ba32811989f
          History

          Acoustic emission,Bridge cable,Cluster analysis,Particle swarm,Stress corrosion

          Comments

          Comment on this article