The measurement of damage initiation, particle adhesion and cohesive strength from traction displacement curves of a nano-toughened epoxy

被引：5

作者：

Mc Auliffe, D. ^{[1
]}

Karac, A. ^{[2
]}

Murphy, N. ^{[1
]}

Ivankovic, A. ^{[1
]}

机构：

[1] Univ Coll Dublin, Sch Mech & Mat Engn, Dublin 4, Ireland

[2] Masinski Fak Zenici, Fak 1, Zenica 72000, Bosnia & Herceg

来源：

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2016年 / 70卷

关键词：

Nano-particles; Adhesive joints; Toughening mechanisms; Cohesive strength; PRESSURE-SENSITIVE MATRICES; ELASTOMER-MODIFIED EPOXIES; CRACK-GROWTH RESISTANCE; VOID-GROWTH; FRACTURE-BEHAVIOR; GLASSY-POLYMERS; BONDED JOINTS; POROUS SOLIDS; ZONE MODEL; STRESS;

D O I：

10.1016/j.ijadhadh.2016.04.014

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work the deformation behaviour of a nano-toughened epoxy adhesive is measured at different levels of stress triaxiality. The test method consists of a notched axisymmetric adhesive layer loaded in tension. The recorded traction displacement curves were analysed numerically and it was found that the measured peak stress corresponds to the intrinsic cohesive strength, sigma(max) of the material. This method allows experimental measurement of sigma(max), for use in cohesive zone models of fracture. Additional features of the traction displacement curves include a kink that corresponds to particle debonding at a critical hydrostatic stress. By application of the Mori-Tanaka model, the relationship between the experimental measurements and particle/matrix adhesion is described. (C) 2016 Elsevier Ltd. All rights reserved.

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页码：62 / 73

页数：12