Fracture Toughness of CF-Plug Joints of Ti and Epoxy Matrix CFRP

Yoshitake Nishi; Helmut Takahiro Uchida; Satoru Kaneko; Michauel C. Faudree

doi:10.4028/www.scientific.net/KEM.821.131

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 821Fracture Toughness of CF-Plug Joints of Ti and...

Fracture Toughness of CF-Plug Joints of Ti and Epoxy Matrix CFRP

Abstract:

A new method of linear connected joints (Ti/CF-plug/Epoxy) of Ti (Titanium) to Epoxy connected by CF-plug was innovated and developed, since fine carbon fibers (CFs) generate the extremely large friction force by their broad interface between metals and Epoxy polymer (M/Epoxy). Compared with glue and spontaneous adhesions of M/Glue/Epoxy and M/Epoxy, the new method remarkably improved the fracture toughness with maintaining light weight. To maintain the high joint strength of the Ti/CFW-CFJ/Epoxy, the Ni coating film on CF should control to bite the CF by molten Ti. The tensile strength (σ_b) and its strain (ε_b) of Ti/NiCFW-CFJ/Epoxy were higher than those of Ti/CFW-CFJ/Epoxy. In addition, increasing the CF-volume increases the σ_b. The CF-plug joint between Ti and Epoxy matrix CFRP apparently probably enhances the fuel efficiency, as well as safety level of airplane.

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Periodical:

Key Engineering Materials (Volume 821)

Pages:

131-134

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.821.131

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Online since:

September 2019

Authors:

Yoshitake Nishi*, Helmut Takahiro Uchida, Satoru Kaneko, Michauel C. Faudree

Keywords:

Carbon Fiber, Carbon Fibre Reinforced Polymer, Epoxy, Joint, Plug, Titanium

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* - Corresponding Author

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