**5. Conclusions**

Wohler fatigue curves for different types of trabecular structures have been evaluated for the first time. This study has identified clear trends and correlations for the cell type and cell size effects on the number of cycles at rupture during compression–compression fatigue. Further investigations are needed to deepen our understanding of some nonlinear phenomena on the effect of the relative density. Overall, this study has strengthened the idea that lattice structures are a valid resource for aerospace structures due to their light weight and their high specific structural performances. In spite of its limitations, this study certainly adds important novel findings to aid our understanding of fatigue life prediction.

#### **6. Patents**

In this paper, research on the fatigue life of trabecular structures was performed. This work is part of effort towards a patent for a novel anti-icing system for aircraft use [8].

**Author Contributions:** Conceptualization, C.G.F.; methodology, C.G.F.; software, C.G.F. and S.V.; validation, C.G.F. and S.V.; formal analysis, C.G.F. and S.V.; investigation, C.G.F. and S.V.; resources, P.M.; data curation, S.V.; writing—original draft preparation, C.G.F.; writing—review and editing, S.V.; visualization, P.M.; supervision, P.M.; project administration, P.M.; funding acquisition, P.M. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Data Availability Statement:** Data are already all disclosed in Appendices A–C.

**Conflicts of Interest:** The authors declare no conflict of interest.

## **Appendix A**

AlSi10Mg specimens for fatigue test with Bccz cell. The identification code of the specimens is: Celle shape-Cell size-Solid volume fraction (nominal)-Serial number.



AlSi10Mg specimens for fatigue test with Rhombic dodecahedron cell. The identification code of the specimens is: Cell shape-Cell size-Solid volume fraction (nominal)-Serial number.

**Table A2.** Rhombic Dodecahedron Fatigue Results.



**Table A2.** *Cont*.

AlSi10Mg specimens for fatigue test with Octet truss cell. The identification code of the specimens is: Cell shape-Cell size-Solid volume fraction (nominal)-Serial number.

**Table A3.** Octet Truss Fatigue Results.


### **Appendix B**

This section reports the quality analysis of the outcomes provided by the fatigue experiments.

**Figure A1.** Rhombic Dodecahedron Cells Fatigue Outcome Statistical Analysis: (**a**) normal probability plot, max load 80% *σ*02; (**b**) main effect plot, max load 80% *σ*02; (**c**) normal probability plot, max load 60% *σ*02; (**d**) main effect plot, max load 60% *σ*02; (**e**) normal probability plot, max load 40% *σ*02; (**f**) main effect plot, max load 40% *σ*02; (**g**) normal probability plot, max load 20% *σ*02; (**h**) main effect plot, max load 20% *σ*02.

**Figure A2.** Octet Truss Cell Fatigue Outcome Statistical Analysis: (**a**) normal probability plot, max load 80% *σ*02; (**b**) main effect plot, max load 80% *σ*02; (**c**) normal probability plot, max load 60% *σ*02; (**d**) main effect plot, max load 60% *σ*02; (**e**) normal probability plot, max load 40% *σ*02; (**f**) main effect plot, max load 40% *σ*02; (**g**) normal probability plot, max load 20% *σ*02; (**h**) main effect plot, max load 20% *σ*02.

**Figure A3.** Bccz Truss Cells Fatigue Outcome Statistical Analysis: (**a**) normal probability plot, max load 80% *σ*02; (**b**) main effect plot, max load 80% *σ*02; (**c**) normal probability plot, max load 60% *σ*02; (**d**) main effect plot, max load 60% *σ*02.
