File:ParisLaw.png
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Summary
| Description |
English: (Paris' law)
For a typical fatigue crack growth process, the crack growth rate is plotted over the range of the stress intensity factor (in red). Paris' law is fitted to quasi-linear part of this curve (in black). The crack growth rate, da/dN, denotes the change in crack length, a, with increasing number of load cycles, N. The range of the stress intensity factor, K, depends on the magnitude of the loading, the geometry, and the crack length. Both quantities (i.e., da/dN and K) evolve during the fatigue process until the specimen fails. On a log-log plot, the two Paris law model parameters, C and m, can be determined graphically as the y-axis intersect at x=1 and the slope, respectively. The values of the model shown here, i.e., C=10-12 and m=2.85, are typical for, e.g., aluminum. |
| Date | |
| Source | Own work |
| Author | Tomeasy |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:35, 23 July 2010 | | 1,429 × 1,259 (85 KB) | wikimediacommons>Tomeasy | {{Information |Description={{en|1=For a typical fatigue crack growth process, the crack growth rate is plotted over the the range of the stress intensity factor (in red). Paris' law is fitted to this curve (in black). On a log-log plot, as shown here, th |
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