NLR Adds Plasma Treatment System for Composite Aerostructures

Updated on August 13, 2026 • 4 min read

The Netherlands Aerospace Centre (NLR) has expanded its Structures Technologies capabilities with a new atmospheric plasma treatment system from Plasmatreat, supporting research into adhesive bonding for next-generation composite and hybrid aerostructures.

Installed at NLR’s facilities in the Netherlands, the equipment will enable researchers to investigate how atmospheric plasma surface treatment can improve bonding performance across thermoset composites, thermoplastics and future mixed-material structures.

The investment reflects growing interest in adhesive bonding as aerospace manufacturers seek lightweight joining technologies capable of supporting increasingly complex material combinations.

Plasma Treatment Prepares Surfaces for Bonding

Reliable adhesive bonding depends heavily on the condition of the surfaces being joined.

Atmospheric plasma treatment modifies the material surface to improve wettability, helping create stronger interaction between the substrate and adhesive.

For aerospace structures, this capability is particularly relevant because bonding provides an alternative to joining methods such as mechanical fastening and, for metallic structures, welding.

NLR identifies potential applications across wings, fuselages and control surfaces, while adhesive bonding also remains important for aircraft structural repair.

Research Covers Thermoset and Thermoplastic Composites

The newly installed system is already supporting NLR research through projects including Luchtvaart in Transitie, SUBSONIC and MaJoR.

Current work is investigating bonded joints involving both thermoset and thermoplastic composite materials.

This distinction is increasingly important as aerospace manufacturers evaluate thermoplastic composites alongside established thermoset systems. Different matrix chemistries and surface characteristics can require different preparation and bonding strategies.

Plasma treatment provides researchers with another process variable for studying these interfaces under controlled conditions.

Hybrid Composite-to-Metal Joints Are Next

NLR plans to extend the research into hybrid bonded structures.

Future work will include composite-to-metal joints as well as thermoset-to-thermoplastic combinations.

Such material combinations could expand design possibilities by enabling engineers to place different materials where their individual properties are most useful rather than designing an entire structure around a single material system.

However, the resulting interfaces also introduce additional bonding considerations, making surface preparation and process control important areas for investigation.

Supporting Next-Generation Lightweight Aerostructures

By expanding its plasma treatment capability, NLR is strengthening the research infrastructure available for OEMs and Tier 1 aerospace suppliers developing lightweight structures.

The significance of the investment extends beyond the plasma equipment itself. It supports a broader effort to understand how surface preparation, adhesives and different composite or metallic substrates interact as a complete bonded system.

As aerospace structures increasingly combine thermosets, thermoplastics and metals, reliable joining technologies will be an important part of translating these multi-material designs into manufacturable aircraft components.

NLR’s new system provides another platform for evaluating those combinations and developing the bonding processes needed for future hybrid aerostructures.

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