Issue 48

O. A. Mocian et alii, Frattura ed Integrità Strutturale, 48 (2019) 230-241; DOI: 10.3221/IGF-ESIS.48.24

m/s, composite sandwich panels have higher values for both SEA and CFE than those with aluminum facesheet. Though, at 4 m/s they completely lose their load bearing capacity, being completely perforated.

100 120

0 20 40 60 80

3 m/s 3.5 m/s 4 m/s

NAE [%]

Sandwich type

a)

0 100 200 300 400 500 600 SEA [J/kg]

3 m/s 3.5 m/s 4 m/s

Sandwich type

b)

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CFE [-]

3 m/s 3.5 m/s 4 m/s

Sandwich type

c) Figure 4 : Comparison of energy absorption quatifying parameters as a function of impact velocity: a) NAE; b) SEA; c) CFE.

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