TY  - RPRT
TI  - Effect of strain rate on the fracture toughness of silicon nitride AT 1400�C 
AU  - Fields, R J
AU  - Tighe, N J
AU  - Fuller, E R
PY  - 1980
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 79-1960
DO  - 10.6028/NBS.IR.79-1960
ER  -