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Fracture Toughness / Fracture Energy Data for Oxide Glass

NIST Standard Reference Database 137


Silicate Base Glasses

Reference:

Other material collections: Property Data Summaries

Other materials: Oxide Glasses


Other Silicate Glasses materials

SiO2 Base Glasses: S80b

Material Summary:

Molar composition: 80% SiO2 + 20% Na2O

Property Summary:

Property                           Value  Environment  Notes
---------------------------------  -----  -----------  --------------------------------------
Crack Growth Exponent []   .......: 
Elastic Modulus [GPa]   ..........: 57.0   Air          Young's modulus is extrapolated.
Fracture Energy [J/m2]  ..........:  6.64  Air          Notched beam
Fracture Toughness [MPa m1/2].....:  0.87  Air          Notched beam
Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 92.5   N2 liquid
Fracture Energy [J/m2]  ..........:  5.2   N2 liquid  Double cantilever beam
Fracture Toughness [MPa m1/2].....:  0.98  N2 liquid  Double cantilever beam
Crack Growth Exponent []   .......:
Elastic Modulus [GPa]   ..........: 61.0   Air
Fracture Energy [J/m2]  ..........:  2.76  Air          Notched beam
Fracture Toughness [MPa m1/2].....:  0.58  Air          Notched beam