Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix

We conducted an in situ study on CFRP fracturing process using atomic-force-microscopy-based stress-sensitive indentation. Tensile stress distribution during fracture initiation and propagation was directly observed quantitatively. It led to a discovery that previously believed catastrophic fracture...

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Main Authors:	Hongxin Wang, Han Zhang, Kenta Goto, Ikumu Watanabe, Hideaki Kitazawa, Masamichi Kawai, Hiroaki Mamiya, Daisuke Fujita
Format:	Article
Language:	English
Published:	Taylor & Francis Group 2020-01-01
Series:	Science and Technology of Advanced Materials
Subjects:	stress afm indentation cfrp
Online Access:	http://dx.doi.org/10.1080/14686996.2020.1752114

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spelling	doaj-9dde578b813b4043be7047f09e7686922021-09-20T12:43:21ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142020-01-0121126727710.1080/14686996.2020.17521141752114Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrixHongxin Wang0Han Zhang1Kenta Goto2Ikumu Watanabe3Hideaki Kitazawa4Masamichi Kawai5Hiroaki Mamiya6Daisuke Fujita7National Institute for Materials ScienceNational Institute for Materials ScienceNational Institute for Materials ScienceNational Institute for Materials ScienceNational Institute for Materials ScienceUniversity of TsukubaNational Institute for Materials ScienceNational Institute for Materials ScienceWe conducted an in situ study on CFRP fracturing process using atomic-force-microscopy-based stress-sensitive indentation. Tensile stress distribution during fracture initiation and propagation was directly observed quantitatively. It led to a discovery that previously believed catastrophic fracture of individual carbon fiber develops in a controllable manner in the polymer matrix, exhibiting 10 times increase of fracture toughness. Plastic deformation in crack-bridging polymer matrix was accounted for the toughening mechanism. The model was applied to explain low temperature strength weakening of CFRP bulk material when matrix plasticity was intentionally ‘shut down’ by cryogenic cooling.http://dx.doi.org/10.1080/14686996.2020.1752114stressafmindentationcfrp
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hongxin Wang Han Zhang Kenta Goto Ikumu Watanabe Hideaki Kitazawa Masamichi Kawai Hiroaki Mamiya Daisuke Fujita
spellingShingle	Hongxin Wang Han Zhang Kenta Goto Ikumu Watanabe Hideaki Kitazawa Masamichi Kawai Hiroaki Mamiya Daisuke Fujita Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix Science and Technology of Advanced Materials stress afm indentation cfrp
author_facet	Hongxin Wang Han Zhang Kenta Goto Ikumu Watanabe Hideaki Kitazawa Masamichi Kawai Hiroaki Mamiya Daisuke Fujita
author_sort	Hongxin Wang
title	Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
title_short	Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
title_full	Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
title_fullStr	Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
title_full_unstemmed	Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
title_sort	stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
publisher	Taylor & Francis Group
series	Science and Technology of Advanced Materials
issn	1468-6996 1878-5514
publishDate	2020-01-01
description	We conducted an in situ study on CFRP fracturing process using atomic-force-microscopy-based stress-sensitive indentation. Tensile stress distribution during fracture initiation and propagation was directly observed quantitatively. It led to a discovery that previously believed catastrophic fracture of individual carbon fiber develops in a controllable manner in the polymer matrix, exhibiting 10 times increase of fracture toughness. Plastic deformation in crack-bridging polymer matrix was accounted for the toughening mechanism. The model was applied to explain low temperature strength weakening of CFRP bulk material when matrix plasticity was intentionally ‘shut down’ by cryogenic cooling.
topic	stress afm indentation cfrp
url	http://dx.doi.org/10.1080/14686996.2020.1752114
work_keys_str_mv	AT hongxinwang stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT hanzhang stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT kentagoto stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT ikumuwatanabe stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT hideakikitazawa stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT masamichikawai stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT hiroakimamiya stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix AT daisukefujita stressmappingrevealsextrinsictougheningofbrittlecarbonfiberinpolymermatrix
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Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix

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