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Fracture Toughness / Fracture Energy Data for Oxide Glass

NIST Standard Reference Database 137


Germanate Base Glasses

Reference:

Other material collections: Property Data Summaries

Other materials: Oxide Glasses



Other Germanate Glasses materials

GeO2 Base Glasses: G87b

Material Summary:

Molar composition: 87.5% GeO2 + 12.5% Na2O

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 67.52  N2 gas      
Fracture Energy [J/m2]  ..........:  5.2   N2 gas     Notched beam,precracked
samples,
                                                       crosshead speed 3.4 µm/s,dew point 50 °C
Fracture Toughness [MPa m1/2].....:  0.87  N2 gas     Notched beam,precracked samples,
                                                       crosshead speed 3.4 µm/s,dew point 50 °C