Exact(6)
Failure analysis tools must be able to predict initiation, size and propagation of delamination process.
Fatigue crack initiation size is obtained by predicting a non-propagating crack at the notch root under fatigue limit loading.
The physical significance of fatigue crack initiation size was explained from the point of view of the fatigue damage.
In this paper, the definition of fatigue crack initiation size and determining method were presented on the basis of the non-propagating cracks behaviour.
On the basis of the fatigue crack initiation size determined in this paper, the fatigue crack initiation life was predicted by means of the local stress strain approach, under both constant amplitude and random loading, and good agreement is demonstrated with experimental data.
Specifically, the time to grow from 7 mm to the treatment initiation size of 12 mm was not significantly different among the groups (Table 1).
Similar(54)
The high and very high cycle fatigue lives predicted based on crack initiation site size and early stage short crack growth rate agree well with real fatigue data.
We find that channel initiation and size are mediated by loop coalescence resulting from elastic interactions with moving dislocations.
This technique adds autonomy to existing fretting fatigue models by releasing the dependence on estimating an initiation flaw size.
The effect on fatigue initiation, damage size and spalling life for both early and developed spalling damage was examined for a gear application.
With the exception of overnight-only control, no two studies have followed the same protocol for closed-loop initiation, meal size and timing, and exercise.
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