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Published in: Polymer Bulletin 10/2017

22-02-2017 | Original Paper

Estimate of carbon fiber’s fracture toughness based on the small angle X-ray diffraction

Authors: Meiling Wang, Wenfeng Bian, Zhaochun Jiang

Published in: Polymer Bulletin | Issue 10/2017

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Abstract

According to the Weibull theory, the micropore sizes were used to analyze the stress intensity factor of carbon fiber monofilament crack tip stress field. Based on the analysis of carbon fiber monofilament and multifilament tensile strength, diameter and micropore size get the relationship between carbon fiber monofilament tensile strength and the pore radius by the Guinier principle and Griffith fracture theory, thus to estimate carbon fiber fracture toughness. The results show that this method can implement the estimation of fracture toughness on the basis without destroying the structure of the carbon fibers; the fracture toughness of T300 estimated by the average pore size was 1.34 MPa·m1/2, in accordance with data 1.25 and 1.32 MPa·m1/2 by producing defects, errors are 7.2 and 1.5%, respectively.

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Metadata
Title
Estimate of carbon fiber’s fracture toughness based on the small angle X-ray diffraction
Authors
Meiling Wang
Wenfeng Bian
Zhaochun Jiang
Publication date
22-02-2017
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 10/2017
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-017-1941-2

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