Title: A New Testing System to Determine the Fiber-Matrix Adhesion Strength by Means of Pull-Out Tests
Authors: Edith Mäder, Christina Scheffler, Andrea Miene, Ulrich Mörschel, Claudia Poitzsch, Stefan Fliescher
DOI: 10.33599/nasampe/s.21.0608
Abstract: In this article we discuss in detail the measurement of the fiber-matrix adhesion strength by means of a new testing system which has been developed as collaboration between the Leibniz-Institut für Polymerforschung (IPF) in Dresden, the Faserinstitut Bremen (FIBRE) and Textechno. The system determines the adhesion between fiber and matrix in terms of the local interfacial shear strength, the interfacial toughness and further parameters through a reproducible single-fiber pull-out test. In addition, an optical measurement of the contact angle between fiber and matrix is integrated in the system. The technique is suited for all kinds of fibers as well as all kind of thermoset and thermoplastic matrices with curing and melting temperatures up to 400°C. Our discussion includes hands-on examples on the application of the testing system for various fiber-matrix combinations.
References: [1] Ehrenstein, G.W. Faserverbund-Werkstoffe, Werkstoffe-Verarbeitung-Eigenschaften. Carl Hanser Verlag München Wien, 2006. [2] Zhandarov, S & Mäder, E. “Characterization of fiber/matrix interface strength: applicability of different test, approaches and parameters.” Composites Science and Technology 65 (2005): 149-160 [3] Zhandarov, S. & Mäder, E. “Determining the interfacial toughness from force–displacement curves in the pull-out and microbond tests using the alternative method.” International Journal of Adhesion and Adhesives 65 (2016): 11-18 [4] Zhandarov, S., Mäder, E. & Yurkevich O. “Indirect estimation of fiber/polymer bond strength and interfacial friction from maximum load values recorded in the microbond and pull-out tests. Part I: local bond strength.” Journal of Adhesion Science and Technology 17 (2003): 967-980 [5] Zhandarov, S. & Mäder, E. “Indirect estimation of fiber/polymer bond strength and interfacial friction from maximum load values recorded in the microbond and pull-out tests. Part II: Critical energy release rate.” Journal of Adhesion Science and Technology 17 (2003): 967-980 [6] Mäder, E., Mörschel, U. & Effing, M. “Quality assessment of composites.” JEC Composites Magazine 102 (2016): 49-51 [7] Textechno H. Stein GmbH & Co. KG, Mönchengladbach. “Fiber-Matrix Adhesion Tester FIMATEST.” 2019-12-13 http://www.textechno.com/product/fimatest, [8] Nairn, J. “Analytical fracture mechanics analysis of the pull-out test including the effects of friction and thermal stresses.” Advanced Composite Letters 9 (2000): 373-383 [9] Nayfeh, A. H. “Thermomechanically induced interfacial stresses in fibrous composites.” Fibre Sci. & Tech. 10 (1977: 195-209 [10] Textechno H. Stein GmbH & Co. KG, Mönchengladbach. “Automatic Single-Fibre Test System FAVIMAT+”. 2019-12-16 http://www.textechno.com/product/favimat-with-airobot2-and-autofeed/
Conference: SAMPE NEXUS 2021
Publication Date: 2021/06/29
SKU: TP21-0000000608
Pages: 11
Price: FREE
Get This Paper