| Abstract Scope |
Open-cell nickel foam (OCNFs) has excellent mechanical efficiency, making it ideal for lightweight structures and energy absorption applications. However, the effect of the microstructure parameters, especially the pores per inch (PPI), on their tensile behavior remains inadequately characterized. In this study, a comprehensive experimental and numerical method is used to investigate the structure-performance relationship governing OCNF deformation. Micro-computed tomography (micro-CT), digital image correlation (DIC), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) were used to evaluate pore morphology, deformation mechanisms, and crack growth. The results show that there is a direct correlation between an increase in PPI and an increase in yield strength, Young's modulus, and ultimate tensile strength, which is attributed to an improvement in load distribution and a decrease in stress concentration. These findings provide important insights into the mechanical response of OCNFs, guiding design optimization for their advanced structural and functional applications. |