An alternative method of determining the local interfacial shear strength from force-displacement curves in the pull-out and microbond tests

被引：0

作者：

Zhandarov, Serge ^{[1
,2
]}

Mäder, Edith ^{[1
,3
]}

机构：

[1] Leibniz-Institut für Polymerforschung Dresden E.V., Hohe Strasse 6, Dresden 01069, Germany

[2] V. A. Bely Metal-Polymer Research Institute, National Academy of Sciences of Belarus, Kirov Street 32a, Gomel 246050, Belarus

[3] Institute of Materials Science, Technische Universität Dresden, Helmholtz Street 10, Dresden 01062, Germany

来源：

International Journal of Adhesion and Adhesives | 2014年 / 55卷

关键词：

Finite difference method;

D O I：

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学科分类号：

摘要：

The traditional way of determining the local interfacial shear strength (IFSS), τd, between the fiber and the matrix in microbond and pull-out test includes the measurement of the debond force, Fd, at which interfacial crack initiates, and subsequent τd calculation using the shear-lag analysis. However, for some fiber-matrix pairs the debond force, which manifests itself as a 'kink' in the force-displacement curve, cannot be reliably measured. We propose a new approach, based on measuring the maximum pull-out force, Fmax, and the initial post-debonding force, Fb, which does not require the knowledge of the Fd value. The comparison of the τd values calculated for several fiber-matrix pairs using three different methods of data reduction demonstrated that the new method yielded results very similar to the traditional one. Thus, it can be recommended as an alternative technique if the debond force is indeterminable. © 2014 Elsevier Ltd.

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页码：37 / 42