A Framework of Assessing Remaining Fatigue Life of Aged Crane Structures
The fatigue life of crane steel structure will inevitably decrease in the course of work, which directly affects the work of crane. So the correct fatigue life evaluation is necessary. Based on crack propagation theory, a framework of assessing remaining fatigue life of crane metal structures is built in this paper. Moreover, in order to descript the analysis process, an example about fatigue life estimation of a shipbuilding gantry crane whose maximum hoist 100 ton was shown. During assessment of remaining fatigue life of aged crane structure, some important indexes were inspected such as corrosion，strength and defection in focused weld joints, besides of finite element simulation of structure. The results can also be used to evaluate the whole metal structure of this crane.
Chunliang Zhang and Paul P. Lin
K. Qi et al., "A Framework of Assessing Remaining Fatigue Life of Aged Crane Structures", Applied Mechanics and Materials, Vols. 226-228, pp. 1141-1144, 2012