Issue 57

A. Basiri et alii, Frattura ed Integrità Strutturale, 57 (2021) 373-397; DOI: 10.3221/IGF-ESIS.57.27

Therefore, a hysteresis energy-based model would be selected in this article in order to describe the fatigue lifetime of both AlSi and AlSi_N_T6 samples.

Figure 24: Test results regarding the stress rate effect under zero mean stress and the stress amplitude of 210 MPa for evolutions of the strain amplitude over cycles for both AlSi and AlSi_N_T6.

Figure 25: Test results regarding the stress rate effect under zero mean stress and the stress amplitude of 210 MPa for evolutions of the plastic strain amplitude over cycles for both AlSi and AlSi_N_T6. The power-law formulation describing the relationship between the energy related damage parameter P and fatigue lifetime N f has been described as follows [57]:     B f N A P (1) Where A and B are two material constants. The energy related damage parameter that has been utilized in this investigation is the plastic strain energy density to represent the fatigue damage inside the material. The plastic strain energy at each cycle had been reported to be

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