Fracture toughness for mixed mode I/II of epoxy resin

被引：54

作者：

Araki, W ^{[1
]}

Nemoto, K ^{[1
]}

Adachi, T ^{[1
]}

Yamaji, A ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Meguro Ku, Tokyo 1528552, Japan

来源：

ACTA MATERIALIA | 2005年 / 53卷 / 03期

关键词：

mixed mode; fracture toughness; polymers;

D O I：

10.1016/j.actamat.2004.10.035

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

We investigated the fracture locus and the direction of the crack initiation under mixed mode 1111 for epoxy resin at room temperature. In order to obtain them over a whole mode mixity, we conducted asymmetric bending! tests. We examined four common fracture criteria to compare them with the experimental results. Based on our experimental results. we concluded that the relaxation effect on fracture toughness varies with the mode mixity, so the common fracture criteria for mixed mode could not be applied to the epoxy resin. In contrast, the crack initiation angle can possibly be determined independently of the relaxation effect. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：869 / 875

页数：7

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