| abstract |
There is provided a method for manufacturing a joint member including two or more carbon fiber composite materials having a thermoplastic resin as a matrix, characterized in that while heating and melting or after heating and melting at least one joining portion A of the composite materials, the one joining portion A is brought into contact with other joining portion B of the composite materials, and the joining portions A and B are welded by giving vibration or ultrasonic vibration while applying a pressure. |