Improvement of adhesive toughness measurement

被引：26

作者：

Meng, Qingshi ^{[1
]}

Zaman, Izzuddin ^{[1
]}

Hannam, Joshua R. ^{[1
]}

Kapota, Shepherd ^{[1
]}

Luong, Lee ^{[1
]}

Youssf, Osama ^{[2
]}

Ma, Jun ^{[1
]}

机构：

[1] Univ S Australia, Sch Adv Mfg & Mech Engn, Mawson Lakes, SA 5095, Australia

[2] Mansoura Univ, Fac Engn, Mansoura, Egypt

来源：

POLYMER TESTING | 2011年 / 30卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

Adhesive toughness; Double cantilever beam; Thermoset; Nanocomposite; FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; LIQUID RUBBER; CRACK-GROWTH; NANOPARTICLES;

D O I：

10.1016/j.polymertesting.2011.01.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The double cantilever beam (DCB) method for adhesive toughness measurement was improved by incorporating a sufficiently sharp crack made by a wedge-tapping method. A known route to producing cracks via loading-unloading cycles was proved unreliable because the cycles produced plastic deformation in the adhesive where new cracks propagated. Abnormally high toughness values with large standard deviations were obtained with cracks made by embedding a non-sticky insert. Only instantly propagated cracks made by tapping were sufficiently sharp to produce reproducible, accurate toughness measurements. However, toughened resin was insensitive to crack sharpness. A crack length to adherend length ratio of 0.2-0.5 is recommended. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：243 / 250

页数：8

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