Abstract
This paper describes a novel technique under development to determine the in-plane shear strength of high-performance, polymeric filaments. Shear planes are created in filaments by machining notches into single fibers using a scanning electron microscope equipped with a focused ion beam (FIB). The notched fiber is modeled using a transversely isotropic finite element model to predict the low-strain elastic response of the notched fiber. This model is used to optimize notch position and geometry, in order to minimize stress concentrations and ensure uniform shear stress development within the shear zone of the notched fiber. Experimentally, the notched fibers are fastened to a small-scale load frame, where they are tested to failure. Emphasis is placed on minimal handing of samples throughout the experimental process.
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Acknowledgements
This research was supported in part by an appointment to the Postgraduate Research Participation Program at the U.S. Army Research Laboratory administered by the Oak Ridge Institute for Science and Education through an interagency agreement between the U.S. Department of Energy and USARL.
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© 2014 The Society for Experimental Mechanics
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Slusarksi, K.A., Walter, M.S., Bogetti, T.A., Wetzel, E.D. (2014). In-plane Shear Properties of High-Performance Filaments. In: Jay, C. (eds) Fracture and Fatigue, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00765-6_14
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DOI: https://doi.org/10.1007/978-3-319-00765-6_14
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