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Chae, Han Gi
Polymer nano-composites and Carbon Fiber Laboratory
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Development of single filament testing procedure for polyacrylonitrile precursor and polyacrylonitrile-based carbon fibers

Author(s)
Lyons, Kevin M.Newcomb, Bradley A.McDonald, Kenneth J.Chae, Han GiKumar, Satish
Issued Date
2015-08
DOI
10.1177/0021998314545184
URI
https://scholarworks.unist.ac.kr/handle/201301/17206
Fulltext
http://jcm.sagepub.com/content/early/2014/08/31/0021998314545184
Citation
JOURNAL OF COMPOSITE MATERIALS, v.49, no.18, pp.2231 - 2240
Abstract
Single filament testing protocols for polyacrylonitrile precursor and polyacrylonitrile-based carbon fibers have been developed to ensure reliable tensile results that can be compared to the standard testing protocols used by the industry. Accurate carbon fiber linear density measurement by vibroscope was quite sensitive to the pre-stress applied to the fiber. Gauge length dependence testing of the commercial carbon fibers exhibited that tensile strengths obtained at 25.4 mm gauge length are comparable to those reported by the manufacturer using the standard strand testing results. On the other hand, experimental carbon fibers that have not been surface treated or sized, showed that single filament tensile strength values at 6 mm gauge length was comparable to the strand testing results. In addition, the compliance corrected tensile moduli of carbon fibers obtained by single filament tests were also comparable to the moduli obtained from the standard strand testing results. A modified Weibull analysis, which accounts for sample volume effects, has also been used to determine the Weibull modulus of both the commercial and experimental carbon fibers.
Publisher
SAGE PUBLICATIONS LTD
ISSN
0021-9983

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