A comparison of K(Ic) values of nuclear waste glasses obtained by Vickers indentations and by short rod fractometry
The stress intensity factor K(Ic) was determined on the inactive nuclear waste glasses VG98/12.2 (with and without added simulated waste oxides), VG 98/12 and GP 98/12.2 Li (with added simulated waste oxides), as a measure of the fracture toughness. Two techniques were employed and compared: Vickers indentation and short rod fractometry. For the Vickers indentation technique, a detailed study of error propagation and of influences of sample preparation was performed, the latter to assess the effect of surface compressive stresses. The method of short rod fractometry was used to measure several K(Ic) values on the same glass samples. These results provided an independent verification and validation and enabled a new calibration of the empirical constant, in the equation to deduce K(Ic) from Vickers indentations.
Bibliographic Reference: Paper presented: 2nd International Workshop on Indentation Techniques in connection with 7th SIMCER, Bologna (IT), Dec. 13-16, 1988
Availability: Available from (1) as Paper EN 34393 ORA
Record Number: 199010019 / Last updated on: 1994-12-01
Original language: en
Available languages: en