Determination of the interface strength between two polymer materials by a new curved interface tensile test: Preliminary experimental results

Authors: Schneider K.; Lauke B.; Schüller T.

Source: Composite Interfaces, Volume 10, Number 6, 2003 , pp. 581-591(11)

Publisher: VSP, an imprint of Brill

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Abstract:

Recently, the authors have proposed a new experimental method for the determination of adhesion strength between two different materials. A curved interface and special arrangement of materials is used for the tensile test of bimaterial specimens to avoid singular stress fields around corners and edges. The main advantage of the test consists in the fact that the strength is determined under conditions of a uniform tensile stress field normal to the interface in the region where debonding starts. The present paper presents experimental results for two bimaterial systems - PMMA/TPE and PC/TPE (two stiff standard polymers with a thermoplastic elastomer). The expected failure behaviour was observed during the experiments, thus enabling the estimation of adhesion strength by using calculated stress concentration factors. The influence of the radius of curvature is discussed in detail.

Keywords: ADHESION STRENGTH; COMPOSITE INTERFACES; INTERFACE FAILURE

Document Type: Research article

DOI: 10.1163/156855403322667287

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