Fatigue Behaviour of Dragline Tubular Structures

疲劳破坏是拖拉式筒体结构的主要问题。这样的结构发生了几次灾难性的倒塌。这种大型管状结构的疲劳性能尚不清楚。在许多现有的牵引线上观察到疲劳裂纹。最新的国际设计规范不足以解决这一问题。该项目将为此类结构的设计、检查、加固和评估制定可靠的方法。其结果将是降低制造和运营成本，并降低灾难性故障风险。这将增加澳大利亚矿业的国际竞争力。其他几个行业部门将从该项目开发的技术中受益。

Fatigue failure is a major concern for dragline tubular structures. Several catastrophic collapses of such structure occurred. The fatigue behaviour of such large tubular structures is unknown. Fatigue cracks were observed in many existing draglines. The latest international design codes are inadequate to address this issue. The project will develop reliable methodologies for design, inspection, strengthening and assessment of such structures. The outcome will be reduced manufacturing and operational costs and a reduced catastrophic failure risk. This will increase the international competitiveness of Australian mining industry. Several other industry sectors will be benefited from the technology developed in this project.