A Fiber-Bundle Pull-out Test for Surface-Modified Glass Fibers in GF/Polyester Composite

The development of high-performance polymer composites is tightly bound with the functional surface modification of reinforcements. A new method, based on the principle of the fiber-bundle pull-out test, is proposed to analyze the interfacial properties between the long fibers in the form of a bundl...

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Bibliographic Details
Published in:Composite interfaces 2011-01, Vol.18 (4), p.309-322
Main Authors: Cech, V., Janecek, P., Lasota, T., Bursa, J.
Format: Article
Language:English
Subjects:
ELECTRON MICROSCOPY
FINITE ELEMENT ANALYSIS (FEA)
INTERFACE/INTERPHASE
POLYMER-MATRIX COMPOSITES (PMCS)
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Summary:The development of high-performance polymer composites is tightly bound with the functional surface modification of reinforcements. A new method, based on the principle of the fiber-bundle pull-out test, is proposed to analyze the interfacial properties between the long fibers in the form of a bundle and the polymer matrix. Specimen geometry and a test fixture were designed using finite element analysis. The method was verified for unsized and sized glass fibers embedded in polyester resin to demonstrate its applicability for a wide range of adhesion between fibers and the polymer matrix. The pull-out test can be used for a relative comparison of different surface modifications if the bundle geometry is unknown. The results of high reproducibility and sensitivity for interfacial properties make the method attractive.
ISSN:0927-6440
1568-5543
DOI:10.1163/092764411X570879