The Ministry of Defense has presented the results of CERAUXET, a research project that combines boron carbide ceramics with auxetic polyethylene structures to develop advanced personal ballistic protection systems. This initiative also highlights the growing importance of new materials within the Spanish defense industry.
Innovation in defense is not limited to drones, communication systems, artificial intelligence, or new military vehicles. A less visible part of the research focuses on the materials used to protect soldiers and enable equipment to provide greater resilience without excessively increasing weight.
In this context lies CERAUXET, a project promoted by the General Directorate of Armament and Material (DGAM), whose results have been included by the Ministry of Defense among the emerging technologies highlighted in the latest Technology Observation Bulletin in Defense, published on August 6. Its goal is to investigate new systems for personal ballistic protection by combining high-performance ceramics with special polyethylene structures.
Behind the complex technical nomenclature —“Advanced personal ballistic protection systems based on boron carbide ceramics and auxetic UHMWPE structures”— is a relatively straightforward question: how to achieve effective protection against impacts using resilient materials that are light enough to be carried by a person.
Ceramics and polyethylene to stop an impact
Modern ballistic protection systems often combine different materials because each serves a specific function. CERAUXET investigates the use of boron carbide ceramics alongside UHMWPE, which stands for ultra-high molecular weight polyethylene.
Boron carbide is a ceramic material known for its high hardness and low weight, qualities that make it attractive for protective applications. In a shielding system, the ceramic layer is designed to initially absorb the impact, while the materials behind it help to absorb and distribute the remaining energy.
CERAUXET’s research particularly focuses on that second aspect. The original contract from the DGAM defined the project as the research and development of auxetic polyethylene structures used as backing and support for high-performance ceramics produced through innovative processes.
The term «auxetic» is key to the project. Auxetic materials or structures exhibit different behavior than usual when subjected to certain deformations. Through specific geometric designs, the way in which the material responds and distributes stress can be modified, a characteristic that opens new possibilities in fields where energy absorption is especially critical.
Applied to ballistic protection, the research aims to leverage that architecture to enhance the overall behavior of the different layers that make up the protective system.
A research and development project initiated in 2022
CERAUXET is not a newly initiated project. The General Directorate of Armament and Material formally awarded its development in November 2022 as part of its research programs in materials for security and defense.
The contract amounted to €991,735.53 and was awarded to the Textile Industry Research Association, based in Alcoy. The procedure was processed as a negotiated contract without publicity for technical reasons and specifically involved the investigation of auxetic polyethylene structures as a support for high-performance ceramics.
Nearly four years later, the Ministry of Defense has incorporated the results of this research into its publication dedicated to observing technologies that may have military applications. The project appears in the emerging technologies section of issue number 89 of the bulletin, alongside another analysis focused on satellites in very low orbits.
This trajectory is representative of how a part of military innovation works. Before a technology can evolve into a product used by the Armed Forces, there is a process that includes research, material manufacturing, prototype development, testing, and validation. Not all R&D projects necessarily end up becoming systems acquired on a large scale, hence the importance of differentiating the experimental results of CERAUXET from a potential future incorporation into military equipment.
Reducing weight is also an operational issue
The development of lighter protections addresses a practical need. A soldier may transport body armor, a helmet, a weapon, ammunition, communication systems, batteries, water, and other equipment during an operation. The cumulative weight can be considerable, affecting mobility and physical exertion over extended periods.
Therefore, in personal protection, it is not sufficient to merely increase thickness or add material. The research seeks to find a balance between level of protection, protected area, weight, and mobility.
Advanced materials play an important role in that equation. Ceramics, high-performance fibers, polymers, and composite materials allow for the exploration of new configurations capable of providing impact resistance without solely relying on increased mass.
CERAUXET specifically falls within that line of research: combining different materials and modifying their structures to study how the overall performance can be improved.
New materials gain traction in the defense industry
The project also sheds light on an industrial area that often receives less attention than major armament programs. The defense industry requires companies skilled in advanced materials, technical textiles, ceramics, polymers, composites, industrial treatments, additive manufacturing, and characterization and testing processes.
This diversification is particularly relevant at the moment. The new Defense Technology and Innovation Strategy (ETID 2026), published by the Ministry in March, aims to establish a strong and innovative Defense Industrial and Technological Base and strengthen national technological capacities. Among the areas gaining prominence are advanced materials, alongside technologies like artificial intelligence, robotics, sensors, energy, and autonomous systems.
This significantly broadens the business perimeter related to defense. Not all companies participating in this industry manufacture vehicles, aircraft, ships, or weapon systems. Part of the value chain consists of companies and technology centers specialized in components, materials, and processes that can later be integrated into products developed by other manufacturers.
CERAUXET is an example of the less visible side of the industry. Its development began as a research contract on ceramics and polyethylene structures, and its results are now part of the monitoring that Defense conducts on emerging technologies.
The next step will depend on the evaluation, validation, and eventual application processes determined by the Ministry. For now, the project illustrates how Spanish research in new materials is seeking solutions for one of the ongoing challenges of military protection: increasing resilience capacity without turning that protection into an excessive burden for those who must carry it.
