EXPERIMENTAL-STUDY OF QUASI-STATIC BRITTLE CRACK-PROPAGATION

被引：53

作者：

RONSIN, O

HESLOT, F

PERRIN, B

机构：

[1] Laboratoire de Physique de la Matière Condensée de l'Ecole Normale Supérieure, 75231 Paris Cedex 05

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.75.2352

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter presents an experimental study of controlled brittle crack propagation in thin glass strips, using a thermally induced stress field. For straight and oscillating crack propagation, three regimes are observed, controlled by a set of characteristic lengths. Direct measurements of the thermal field allows meaningful comparison with a model for straight symmetric crack based on two-dimensional elasticity. This strongly supports a velocity-independent fracture energy. For the oscillating onset, it is shown that the Cotterell-Rice criterion is not valid here.

引用

页码：2352 / 2355

页数：4

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