Improvement of adhesive toughness measurement

Meng, Qingshi and Zaman, Izzuddin and Hannam, Joshua R. and Kapota, Shepherd and Luong, Lee and Youssf, Osama and Ma, Jun (2011) Improvement of adhesive toughness measurement. Polymer Testing, 30 . pp. 243-250. ISSN 0142-9418

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Abstract

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 tough- ness measurements. However, toughened resin was insensitive to crack sharpness. A crack length to adherend length ratio of 0.2–0.5 is recommended.

Item Type:Article
Uncontrolled Keywords:adhesive toughness; double cantilever beam; thermoset; nanocomposite
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
ID Code:6236
Deposited By:Dr Izzuddin Zaman
Deposited On:09 Dec 2014 14:36
Last Modified:09 Dec 2014 14:36

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