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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: G83a

Material Summary:

Molar composition: 83.5% GeO2 + 16.5% K2O

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 61.57  N2 gas      
Fracture Energy [J/m2]  ..........:  2.9   N2 gas     Notched beam,precracked
samples,
                                                       crosshead speed 3.4 µm/s, dew point 50 °C
Fracture Toughness [MPa m1/2].....:  0.62  N2 gas     Notched beam,precracked samples,
                                                       crosshead speed 3.4 µm/s, dew point 50 °C