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

被引：30

作者：

PICU, RC ^{[1
]}

GUPTA, V ^{[1
]}

机构：

[1] DARTMOUTH COLL, THAYER SCH ENGN, HANOVER, NH 03755 USA

来源：

ACTA METALLURGICA ET MATERIALIA | 1995年 / 43卷 / 10期

关键词：

D O I：

10.1016/0956-7151(95)90163-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Biaxial compression experiments were carried out to investigate the mechanisms of crack nucleation in columnar freshwater ice. For strain rates higher than 10(-3) s(-1) at -10 degrees C, it is observed that crack nucleation is preceded by grain boundary sliding which results in local decohesion pockets spread intermittently along the boundary facets. The experimental results are shown to support the crack nucleation model presented in the companion paper.

引用

页码：3791 / 3797

页数：7

共 7 条

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CANNON, NP
SCHULSON, EM
SMITH, TR
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[3] GRAPE J, 1992, INT J OFFSHORE POLAR, V2, P212
[4] CRACK NUCLEATION IN COLUMNAR ICE DUE TO ELASTIC-ANISOTROPY AND GRAIN-BOUNDARY SLIDING
PICU, RC
GUPTA, V
[J]. ACTA METALLURGICA ET MATERIALIA, 1995, 43 (10): : 3783 - 3789
[5] RAJ R, 1982, ACTA METALL, V30, P1511
[6] THE BRITTLE COMPRESSIVE FRACTURE OF ICE
SCHULSON, EM
[J]. ACTA METALLURGICA ET MATERIALIA, 1990, 38 (10): : 1963 - 1976
[7] SMITH TR, 1992, THESIS DARMOUTH COLL

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