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. 2021 Nov 8;13(21):3852. doi: 10.3390/polym13213852

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Toughness indices ( $I_{5}$ , $I_{10}$ , and $I_{f a i l u r e}$ ) for all carbon-fiber-reinforced GPO samples.