Reliability of the chevron notch technique for fracture toughness determination in glass composites reinforced by continuous fibres

被引：20

作者：

Dlouhy, I ^{[1
]}

Boccaccini, AR

机构：

[1] Inst Phys Mat, CZ-61662 Brno, Czech Republic

[2] Ilmenau Univ Technol, Inst Mat Technol, D-98684 Ilmenau, Germany

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 03期

关键词：

composites; glass composite; fracture; fracture toughness; chevron notch;

D O I：

10.1016/S1359-6462(00)00601-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Chevron notch technique is a reliable method to assess fracture behaviour in brittle matrix composites reinforced by continuous fibers. In comparison with the straight notched specimen technique, chevron notch technique offers higher accuracy for fracture toughness determination because more reproducible conditions for crack initiation are assured. For specimens with straight notch, separate effects that may take place due to larger 'process zone' such as microcracking along the fiber-matrix interface (mixed mode crack propagation) and may effect the maximum load to overall deformation energy for fracture, leading to an overestimation of fracture toughness values.

引用

页码：531 / 537

页数：7

共 17 条

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