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Effect of tow size and interface interaction on interfacial shear strength determined by Iosipescu (V-Notch) testing in epoxy resin

Stojceveski, Filip, Hendlmeier, Andreas, Randall, James D, Arnold, Chantelle, Stanfield, Melissa K, Eyckens, Daniel, Alexander, Richard and Henderson, Luke C 2018, Effect of tow size and interface interaction on interfacial shear strength determined by Iosipescu (V-Notch) testing in epoxy resin, Materials, vol. 11, no. 9, pp. 1-12, doi: 10.3390/ma11091786.

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Title Effect of tow size and interface interaction on interfacial shear strength determined by Iosipescu (V-Notch) testing in epoxy resin
Author(s) Stojceveski, Filip
Hendlmeier, Andreas
Randall, James D
Arnold, Chantelle
Stanfield, Melissa K
Eyckens, Daniel
Alexander, RichardORCID iD for Alexander, Richard orcid.org/0000-0001-6121-7885
Henderson, Luke CORCID iD for Henderson, Luke C orcid.org/0000-0002-4244-2056
Journal name Materials
Volume number 11
Issue number 9
Start page 1
End page 12
Total pages 12
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2018-09-19
ISSN 1996-1944
Keyword(s) carbon fiber
interfacial shear strength
interfacial evaluation
science & technology
technology
materials science
Summary Testing methodologies to accurately quantify interfacial shear strength (IFSS) are essential in order to understand fiber-matrix adhesion. While testing methods at a microscale (single filament fragmentation test-SFFT) and macroscale (Short Beam Shear-SBS) are wide spread, each have their own shortcomings. The Iosipescu (V-notch) tow test offers a mesoscale bridge between the microscale and macroscale whilst providing simple, accurate results with minimal time investment. However, the lack of investigations exploring testing variables has limited the application of Iosipescu testing to only a handful of studies. This paper assesses the effect of carbon fiber tow size within the Iosipescu tow test for epoxy resin. Tow sizes of 3, 6, and 9 k are eminently suitable, while more caution must be shown when examining 12, and 15 k tows. In this work, tows at 18 and 24 k demonstrated failure modes not derived from interfacial failure, but poor fiber wetting. A catalogue of common fracture geometries is discussed as a function of performance for the benefit of future researchers. Finally, a comparison of commercial (T300), amine (T300-Amine), and ethyl ester (T300-Ester) surface modified carbon fibers was conducted. The outcomes of this study showed that the Iosipescu tow test is inherently less sensitive in distinguishing between similar IFSS but provides a more 'real world' image of the carbon fiber-epoxy interface in a composite material.
Language eng
DOI 10.3390/ma11091786
Field of Research 03 Chemical Sciences
09 Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2018, the authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30113972

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.