Kindai University, Department of Mechanical Engineering, Faculty of Science and Engineering

Joining Electro-fusion joining technology for CFRP

Technical Classification:
[ Joining ]
[ corrosion resistance ] [ Fusion joining ] [ recyclability ] [ spread carbon fiber ] [ tensile shearing strength ]

Point of the Proposed Technology

・Compared to the conventional fusion joining using a metallic resistance heating element, this technology substantially increases the tensile shearing strength of fusion joined portion.
・By using carbon fiber for the resistance heating element, the joining strength, recyclability and corrosion resistance are increased.


・Realizing a tensile shearing strength of 30 MPa or more
・Improving the corrosion resistance and recyclability

Conventional Technology

・Mechanical joining
  The increase in weight due to stress concentration and metallic fastening is a problem.

・Adhesion joining
  Chemical bonding with thermoplastic resin is extremely low.

New Technology

Technology Deployment and Cooperation

Development Stage
Prototyping / experimental Stage (to be completed in 2018/3; progress: 80%)
Intellectual Property Right
Joint Researchers (their role)
Graduate Schools of Osaka University
(Assessment of mechanical properties of fused portion, and so on)
Example of Application
・Fusion joining using thermoplastic CFRP and GFRP and various resin members and pipe joints
・Joining or repair of members by high-cycle fusion joining of thermosetting CFRP and GFRP
Technical Problems
・Upsizing and stabilization of fusion joining, increase of reliability in fatigue strength, impact resistance, etc.
・The patent application for this technology has been filed. The technology can be provided.
Collaborator needed to Improve
・Companies having the techniques for homogeneous spreading of carbon fiber and impregnation molding of various thermoplastics.
・Device manufacturers which can develop stable and high-output power sources
Technical WEB page


Personnel / Department
Department of Mechanical Engineering, Faculty of Science and Engineering / Professor, Kazuaki Nishiyabu
3-4-1 Kowakae, Higashiosaka-shi, Osaka, 577-8502 Japan
Inquiry Form

Outline of Company and Organization

3-4-1 Kowakae, Higashiosaka-shi, Osaka, 577-8502 Japan
Capital / No. of Employees
0 yen /
Product Line
Major Customers
Overseas Base(s)
Company/Organization WEB page

Update date: 2020/1/30

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