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Black printed carbon fibre turbine rotor with six blades

Case study · Energy

Recyclable carbon-fibre turbine unit, 3D printed

A 3D printed turbine unit for a European energy customer, made in chopped carbon-fibre reinforced thermoplastic so the finished part can be recycled.

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Industry
Energy
Material
Chopped carbon-fibre reinforced polymer
Customer
European customer
Feature
Recyclable material

Challenge

  • Make a turbine unit in a carbon-fibre reinforced polymer.
  • Keep the material recyclable.

Result

  • A recyclable turbine unit in carbon-fibre reinforced polymer.
  • Delivered to a European customer.

Approach

  1. 01

    Choose the material

    Chopped carbon-fibre reinforced polymer: a thermoplastic filled with short carbon fibres.

  2. 02

    Print the rotor

    Hub and blades produced by additive manufacturing, with no tooling.

  3. 03

    Deliver

    Shipped to the customer in Europe.

Why this process and material

Why chopped carbon fibre

Short carbon fibres in a thermoplastic add stiffness over an unfilled plastic and print cleanly on large-format machines.

Why recyclability matters

A thermoplastic part can generally be reprocessed at the end of its life. A thermoset composite layup usually cannot.

Summary of the engineering approach

Recyclability set the material choice. A thermoplastic can generally be reprocessed at the end of its life, where a thermoset composite layup usually cannot, and short carbon fibres add the stiffness an unfilled plastic lacks. The rotor was printed without tooling and delivered to a European customer.

Questions about this project

What is the turbine made from?

Chopped carbon-fibre reinforced polymer, a thermoplastic filled with short carbon fibres that can generally be reprocessed at end of life.

Where did it go?

It was delivered to a customer in Europe.

Suggested next steps

Recommendations for taking the part further. None of this is completed work.

  • Test the unit at the customer's operating speed and temperature before committing to a batch.
  • Compare the printed rotor with the existing material on mass and cost.