Abstract
The fracture life, especially, crack growth life under the condition of creep (Time dependent, TD) and fatigue (Cycle dependent, CD) interaction, is mainly dominated by TD in the region of higher temperature and low load frequency and is dominated by CD in the region of lower temperature and high load frequency. In the mediate region, it is considered to be dominated by interactive effect of TD and CD. However, the interactive effect of load frequency on fracture life shows various characteristics. Therefore, it is not feasible to designate under what condition such interactive load frequency characteristic of fracture life appears. In this paper, on the basis of systematic experiments and chaos analysis, a method of theoretical representation on the phenomenological occurrence mechanism of the interaction between TD and CD of fracture life under creep and fatigue condition was discussed.
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