Construction and Manufacturing

Construction and Manufacturing

20 March 2025

R&D case: Enabling temperature control for large scale additive manufacturing

One of the main challenges of Large Scale 3D printing of high temperature thermoplastics is the control of the interface temperature – which determines the degree of bonding between consecutive layers. When the deposited material has cooled down in excess, poor adhesion is achieved between layers, leading to insufficient strength, delamination, cracking and part failure. If the material has not cooled down sufficiently, it won’t support the consecutive layers, therefore leading to print failure. The interface temperature control is especially important when attempting large scale prints and when processing semicrystalline thermoplastics.

Sustainability and Environment

14 March 2025

NLR and Cryoworld collaborate on flying with liquid hydrogen

NLR is taking a further step towards more sustainable flight by partnering with Cryoworld to develop a liquid hydrogen tank. This follows the agreement with zepp.solutions for a fuel cell system. The new collaboration contributes to NLR's ambition to conduct a demonstration flight on liquid hydrogen in 2026.

Construction and Manufacturing

27 February 2025

Full scale testing – certification testing

NLR offers comprehensive testing capabilities for components and full-scale structures, providing support throughout the entire testing process. Our expertise includes setting up tailored test plans that meet specific requirements, as well as ensuring that tests are certification-ready when necessary. We can advice you on finite element modelling and damage tolerance, and assist with processing, interpreting, and correlating test results. Over the years we have built a track record on the (certification) testing of full-scale structures and components for various aircrafts and helicopters. We are used to work both in a research environment and according to a certification and conformity regime.