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Materials Science in Additive Manufacturing Impact resistance and porous structures

A

B

Figure 14. Graded triply periodic minimal surface (TPMS) sandwich structure after impact damage at an impact velocity of 7 m/s: (A) Ultra-field
microscopic morphology; and (B) depth and diameter of the impact indentation

Table 6. Impact resistance performance of graded TPMS sandwich structures
Impact velocity (m/s) Specimen Total energy absorption (J) Porosity (%) EAD (J)
7 G-Linear I 69.18 73 256.22
G-Linear II 67.86 73 251.33
G-Quadratic I 69.59 73 257.74
G- Quadratic II 68.02 73 251.93
G-Sine I 64.96 73 240.59
G-Sine II 66.77 73 247.30
10 G-Linear I 126.8 73 469.63
G-Linear II 97.65 73 361.67
G-Quadratic I 99.12 73 367.11
G- Quadratic II 105.9 73 392.22
G-Sine I 132.6 73 491.11
G-Sine II 92.97 73 344.33
Abbreviations: TPMS: Triply periodic minimal surface; EAD: Energy absorption density.

gradient TPMS sandwich structure at an impact velocity sandwich structures displayed a significant reduction in
of 7 m/s is presented in Figure 15C. The gradient TPMS the peak absolute value of the acceleration and a longer

Volume 3 Issue 4 (2024) 11 doi: 10.36922/msam.5729