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  4. Measurement of interfacial shear strength by means of micromechanical single-fibre pull-out tests
 
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2024
Presentation
Title

Measurement of interfacial shear strength by means of micromechanical single-fibre pull-out tests

Title Supplement
Presentation held at SAMPE Europe Conference 2024, 24th - 26th September 2024, Belfast
Abstract
Interfacial shear strength (IFSS) is one of the key parameters in composite technology. To characterize it, most commonly composites with unidirectionally aligned fibres are manufactured: A transverse tensile test or a short beam shear strength test is then performed to measure the apparent interlaminary shear strength (ILSS). However, the maximum stress found in such macromechanical tests is also governed by various additional factors coming from the preparation of the test samples. Here, the single-fibre pull-out (SFPO) test has several advantages. By involving only single fibres in the test, most dependencies on the manufacturing process of the test specimen are avoided. The single-fibre pull-out test not only determines the apparent, but for instance also the local interfacial shear strength, which is essential for applications with cyclic load. Fast and effective micromechanical testing of the interfacial shear strength has recently been standardized as DIN SPEC 19289. This paper describes the pull-out test in general and shows results for the interfacial shear strength of common thermoset matrix materials to carbon and glass fibres. In addition, the paper gives an example for the application of the SFPO test for the characterization of recycled carbon fibres, coming from a solvolysis process.
Author(s)
Fliescher, Stefan
Textechno H. Stein GmbH & Co. KG
Khalid, Marie
Textechno H. Stein GmbH & Co. KG
Ingelsberger, Erich
Textechno H. Stein GmbH & Co. KG
Drieling, Axel
Faserinstitut Bremen
Leitner, Bernhard  
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Faustmann, Jakob
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Manis, Frank  
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Sauze, Stéphanie
Extracthive SAS
Mahmoudi, Mehdi
Extracthive SAS
Frédéric, Goettmann
Extracthive SAS
Project(s)
Normierung des Einzelfaser-Auszugsversuch zur Vermessung der Faser-Matrix-Haftung  
Funder
Bundesministerium für Wirtschaft und Klimaschutz  
Conference
SAMPE Europe International Conference 2024  
DOI
10.24406/h-478054
File(s)
2024_Fliescher_etal_SAMPE-Europe_Measurement_interfacial_shear_strength.pdf (1.99 MB)
Rights
Under Copyright
Language
English
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Fraunhofer Group
Fraunhofer-Verbund Produktion  
Keyword(s)
  • composite materials

  • shear <mechanics>

  • mechanical wear

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