In BLADE2CIRC we are dedicated to improving the sustainability of wind energy systems throughout their life cycle. By utilizing our innovative bio-based resin and lignin fibres during the construction phase, we will enhance both repairability and recyclability while maintaining high performance. A key partner in achieving this goal is EireComposites. To ensure reliability and mitigate risks, these materials will require thorough testing, in which EireComposites will implement a two-phase strategy.
The first phase EireComposites will examine the material properties and processability of the new bio-based materials by manufacturing a series of composite test laminates. The laminates will be visually inspected, and quality assessed to confirm manufacturability. Next, Aitiip will use the laminates to prepare material test coupons to determine the mechanical properties of the newly developed bio-based composites.
During the second phase, EireComposites will design, manufacture, and structurally test a 1-meter box spar demonstrator, a scaled-down representation of a wind turbine blade’s box spar. A test procedure will be defined, outlining that the demonstrator will be dynamically tested to determine their natural frequencies and damping modes. Then, it will be statically tested in flapwise bending and the test data will confirm the stiffness distribution, strength and failure modes of the demonstrator. Testing will be monitored using a combination of advanced strain and displacement sensors. The manufacture, testing procedure and a comparison of the test results for both demonstrators will be reported and will evaluate the structural rigidity of the new construction materials.
These coupon- and demonstrator-level tests are essential steps in advancing the technology, improving blade lifetime, facilitating efficient decommissioning, and increasing the circularity of both offshore and onshore wind energy systems. Additionally, we will manufacture a section of a full-scale 13 m blade shell/skin to test the application and surface finish of the new bio-based surface coatings with self-healing properties. These treatments play a crucial role in protecting blades and extending their operational lifespan.
Through these efforts, ÉireComposites will demonstrate the manufacturability of the new materials, validate their mechanical strength, and de-risk their adoption. The results will confirm that lignin fibre and bio-based resins can serve as viable, sustainable alternatives to conventional, non-recyclable construction materials, paving the way for a more circular and environmentally friendly wind energy industry.
Stay tuned for more updates and insights as we shape the future of renewable energy.
