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The mechanical performance of carbon fibres-addressing the role of microstructure

Version 2 2024-06-04, 00:57
Version 1 2019-07-29, 15:38
conference contribution
posted on 2024-06-04, 00:57 authored by Peter LynchPeter Lynch, Claudia CreightonClaudia Creighton, D Fox, PM Santiago, A Hawley, S Mudie
Copyright 2019. Used by the Society of the Advancement of Material and Process Engineering with permission. A new SAXS-WAXS method has been developed at the Australian synchrotron for the structural analysis of carbon fibres. The new technique, referred to as serial SAXS-WAXS fibre scattering is used to map the microstructural properties of single carbon fibres, ranging in diameter from 5 to 8 µm. Based on an automated scanning protocol, a single carbon fibre is mounted in vacuum and aligned relative to the incident X-ray beam. After (automated) alignment points on each monofilament are acquired. In the forward scattering direction both the SAXS and WAXS signal are recorded as a single image to ensure that the fibre scattering cross-section is known precisely. Under these conditions both the size and alignment of the microstructural features from fibre-to-fibre are quantified. Importantly, the graphitic alignment, spacing and apparent crystallite size can be directly related to the macroscopic fibre modulus. In addition, quantitative analysis of the SAXS scattering signal from pores trapped within the fibre provides an indication of macroscopic strength. The utility of these techniques are demonstrated for carbon fibres prepared on the Carbon Nexus single tow line at 3 different carbonization tensions.

History

Volume

2019-May

Pagination

1-13

Location

Charlotte, North Carolina

Start date

2019-05-20

End date

2019-05-23

ISBN-13

9781934551301

Language

eng

Publication classification

E1 Full written paper - refereed

Title of proceedings

SAMPE 2019 : Proceedings of the 2019 Society for the Advancement of Material and Process Engineering Conference

Event

Society for the Advancement of Material and Process Engineering. Conference (2019 : Charlotte, North Carolina)

Publisher

[The Conference]

Place of publication

[Charlotte, N.C.]

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