Fracture toughness enhancement of thermoplastic/epoxy blends by the plastic yield of toughening agents: A multiscale analysis

We propose a strategy of multiscale analysis to predict enhancements in fracture toughness of thermoplastic/epoxy blends by the plastic yield of toughening agents. As main mechanisms of toughness enhancement of thermoplastic/epoxy blends, we considered plastic deformation in the material near the ma...

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Bibliographic Details
Published in:Composites science and technology 2017-06, Vol.145, p.173-180
Main Authors: Shin, Hyunseong, Kim, Byungjo, Han, Jin-Gyu, Lee, Man Young, Park, Jong Kyoo, Cho, Maenghyo
Format: Article
Language:English
Subjects:
Deformation mechanisms
Epoxy resins
Fracture toughness
Multiscale analysis
Multiscale modeling
Plastic deformation
Polymer blends
Polymer-matrix composites (PMCs)
Studies
Thermoplastics
Toughening
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Summary:We propose a strategy of multiscale analysis to predict enhancements in fracture toughness of thermoplastic/epoxy blends by the plastic yield of toughening agents. As main mechanisms of toughness enhancement of thermoplastic/epoxy blends, we considered plastic deformation in the material near the macroscopic crack tip, and particle bridging in the crack wake. The proposed multiscale model is validated through the reported experimental data. Using the proposed multiscale model, some useful guidelines for the proper selection of toughening agent were devised.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2017.03.028