Issue 19

L. Susmel et alii, Frattura ed Integrità Strutturale, 19 (2012) 37-50; DOI: 10.3221/IGF-ESIS.19.04

HV

Carico

Errore

Calcolata

Misurata

Materiale

Scala

[mN]

[GPa]

[GPa]

[%] 2.2 1.6 1.1 4.6 4.6

490000 196000

1.84 1.83 1.87 1.75 1.75 1.59 1.75 1.77 1.89 2.07 2.14 2.09 2.13 2.14 2.07 2.08 2.08 1.97 2.09 1.99 2.25 2.75 2.94 3.04 3.08 1.83 1.83 1.84 1.75 1.75 1.75 1.84 1.88 2.18 2.18 2.18 2.19 2.22 2.5 2.65 2.7

1.88 1.86 1.89 1.83 1.83 1.76 2.01 2.08 2.07 2.16 2.37 2.92 3.25 2.11 2.12 2.07 2.01 2.04 2.05 2.36 2.63 2.85 2.87 3.04 3.15 3.34 1.87 1.86 1.87 1.84 1.79 1.93 1.77 2.22 2.41 2.58 2.59 3.32 3.63 3.75 2.5 2.8

98000

Macro

9800 4900

980 490 245

10.7 14.9 17.5

Micro

98 49

9.5 4.3

Al 7075-T6

9.8 4.9

10.7 19.6 37.1 51.9

Nano

0.98 0.49

490000 196000 98000

1.9 1.9

-0.5

Macro

9800 4900

2.0

-2.4

980 490 245

3.0 4.9 5.2 5.7 5.6 4.4 3.4 3.6 8.4 2.2 1.6 1.6 5.1 2.3

Micro

98 49

BS970-En3B

9.8 4.9

Nano

0.98 0.49

490000 196000

98000

Macro

9800 4900

980 490 245

10.3 -3.8 18.1 10.6 18.3 18.8 51.6 63.5

Micro

98 49

AISI 316L

9.8 4.9

Nano

0.98 0.49

2.2 70.5 Tabella 3 : Comparazione tra i valori di durezza HV ottenuti sperimentalmente e quelli ottenuti mediante analisi numeriche agli elementi finiti. Table 3 : Comparison between the experimental values of the Vickers hardness and the corresponding values determined by solving elasto-plastic FE models.

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