OBSERVATIONS OF CRACK NUCLEATION IN COLUMNAR ICE DUE TO GRAIN-BOUNDARY SLIDING

Authors
PICU RC GUPTA V
Citation
Rc. Picu et V. Gupta, OBSERVATIONS OF CRACK NUCLEATION IN COLUMNAR ICE DUE TO GRAIN-BOUNDARY SLIDING, Acta metallurgica et materialia, 43(10), 1995, pp. 3791-3797
Citations number
7
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Acta metallurgica et materialia → ACNP
ISSN journal
09567151
Volume
43
Issue
10
Year of publication
1995
Pages
3791 - 3797
Database
ISI
SICI code
0956-7151(1995)43:10<3791:OOCNIC>2.0.ZU;2-2
Abstract
Biaxial compression experiments were carried out to investigate the me chanisms of crack nucleation in columnar freshwater ice. For strain ra tes higher than 10(-3) s(-1) at -10 degrees C, it is observed that cra ck nucleation is preceded by grain boundary sliding which results in l ocal decohesion pockets spread intermittently along the boundary facet s. The experimental results are shown to support the crack nucleation model presented in the companion paper.