Failure Analysis of Q345 Steel Structures on Port Cranes

Abstract:

Based on a system of macro & micro fracture appearance observation, energy spectrum analysis and metallurgical structure inspection, the cause of sample crack of Q345 steel were obtained. The results showed that the specimen occurred fatigue crack under alternating load, the crack source was a line source, the middle area of the fracture was the relatively flat topography and relatively narrow fatigue striations, the rear area of the fracture was the relatively uneven topography and relatively large fatigue striations, and a certain yield occurred at the crack tip.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 844-847
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.844
• Online since: September 2013
• Authors: Hong Wei Wang, Wen Tao Li, Hong Bai, Hai Qing Xiao, Hong Mei Yu
• Keywords: Fatigue, Fracture, Q345

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