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Soldadura de plásticos reforzados con fibra y metales mediante el uso de insertos metálicos

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20160408002
Publicado:
17/05/2016
Caducidad:
17/05/2017
Resumen:
Una universidad alemana ha desarrollado un método para soldar componentes reforzados con fibra (FRP) con otros componentes FRP o estructuras metálicas y crear una unión que transfiere fuerzas y momentos de forma efectiva sin dañar la fibra. Esta técnica es un proceso de un solo paso que no necesita pretratamiento. La matriz de resina actúa como barrera de difusión y evita el riesgo de corrosión galvánica en caso de que se utilicen fibras de carbono. La universidad busca socios industriales especializados en construcciones ligeras con el fin de establecer acuerdos de licencia o acuerdos de investigación para continuar con el desarrollo.

Details

Tittle:
Welding of fibre-reinforced plastics onto metal using metallic inserts
Summary:
A German university has developed a method to weld fibre-reinforced components (FRP) onto other FRP components or onto metallic structures without any fibre damage. This technique enables a one-step process and does not require a pretreatment. The German university is looking for industrial partners, active in the field of lightweight construction, interested in a license agreement and further development under research cooperation agreement.
Description:
The increasing trend towards lightweight constructions, especially in the aerospace sector and in automotive production requires the use of new technologies, manufacturing processes and materials. Fibre-reinforced plastics (FRP) are frequently used in this context, due to their high stiffness and strength. However, they are less suitable to transfer complex forces or when used in areas where high hardness or abrasive wear resistance is required. Hence, structures made of FRP are usually connected to metallic functional areas.

The invention of a German university proposes a reliable method to weld FRP components onto other FRP components or onto metallic structures. This becomes possible by inserting metallic inserts into the composite, that serve as bridging points to enable a resistant projection welding process. The FRP consist of a carrier plate and small scale form fitting elements mounted onto it. While the matrix resin is used to create an adhesive bond, the carrier plate creates an undercut between the insert and the composite. Hence, two bonding principles are used.

Thanks to the invention, it will be possible to weld FRP onto steel or FRP onto FRP and thus create a joint that effectively transfers forces and moments without any fiber damage.
The technique does not exclude thermosetting matrices. This technology enables a one-step process, that does not require prior drilling or surface pretreatment processes. The small scale form-fitting elements lead to a ductile and multi-step failure behavior that heralds a catastrophic total failure event. The matrix resin acts as a diffusion barrier and eliminates the risk of galvanic corrosion (in case carbon fibers are used). Bearing stress and stress concentrations are avoided, since holes and wide joining elements are not necessary.

The German university is looking for industrial partners, active in the field of lightweight construction, interested in a license agreement that could include further development.
Advantages and Innovations:
This invention enables the following advanced applications with fibre-reinforced plastics (FRP):
- Welding of FRP onto FRP or onto metallic parts
- Avoidance of fibre damage
- More convenient and faster joining process
- Unlike in conventional methods no prior drilling or surface pretreatment is necessary
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
A patent application has been filed in Germany.

Partner sought

Type and Role of Partner Sought:
The German university is looking for industrial partners, active in the field of lightweight construction, that are interested in a license agreement combined with further development.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
02007005 Composite materials
02007019 Lightweight materials
03004005 Man-made fibres
02007014 Plastics, Polymers