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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Online Access: | http://dx.doi.org/10.1080/14686996.2020.1752114 |
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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 |
_version_ |
1717374431902302208 |