A study on the failure behavior and mechanical properties of unidirectional fiber reinforced thermosetting and thermoplastic composites

Failure behavior and mechanical properties of unidirectional (UD) carbon fiber reinforced polyamide 6 (CF/PA6) and epoxy resin (CF/Epoxy) laminates were investigated through tensile tests in this study. The fracture modes of both CF/PA6 and CF/Epoxy were discussed based on the fiber orientation, int...

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Bibliographic Details
Published inComposites. Part B, Engineering Vol. 99; pp. 162 - 172
Main Authors Ma, Yan, Yang, Yuqiu, Sugahara, Toshi, Hamada, Hiroyuki
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.08.2016
Subjects
Damage mechanics
Failure behavior
Polymer-matrix composites (PMCs)
Prepreg
Damage mechanics
Prepreg
Failure behavior
Polymer-matrix composites (PMCs)
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Summary:Failure behavior and mechanical properties of unidirectional (UD) carbon fiber reinforced polyamide 6 (CF/PA6) and epoxy resin (CF/Epoxy) laminates were investigated through tensile tests in this study. The fracture modes of both CF/PA6 and CF/Epoxy were discussed based on the fiber orientation, interfacial properties, Mode II interlaminar fracture toughness and the brush width. Meanwhile, Global load sharing (GLS) model was employed to compare with the experimental mechanical properties and corresponding fracture mechanics model was employed to analyze the fracture behavior. The results showed that UD CF/PA6 laminates with weak interface but high Mode II interlaminalr fracture toughness mainly exhibited step-like fracture modes (77%) in interfacial fracture mode (Adhesive failure), while CF/Epoxy laminates with stronger interface but lower Mode II interlaminalr fracture toughness mostly showed splitting fracture mode (69%) in matrix fracture mode (Cohesive failure).
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2016.06.005