PSI - Issue 19

L.C. Araújo et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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L.C. Araujo et al. / Procedia Structural Integrity 19 (2019) 19–26

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Figure 5. A comparison of predictions with MWCM and experimental results of uniaxial, torsional and combined in-phase loads. In Fig. 6, the difference in the fatigue limit prediction with volume variation is exemplified. For this Crossland ’s model and the data referring to the √ parameter for the specimen volume and the crankshaft volume, available in Table 2, were used.

Figure 6. Difference on the fatigue strength, predicted with the √ parameter with the variation of material volume. This decrease in predicted fatigue strength applies to all multiaxial models since with increasing volume a larger defect is expected to exist in the material and thus the estimated limits, e , decrease.