Providing a solution
Using cutting edge equipment, our scientists can investigate a wide range of material properties and characteristics in order to provide recommendations on how they can best be applied or improved for use in a fully-fledged space mission.
- Optical Microscopes with extensive imaging capability
- Scanning Electron Microscope with a range of detectors
- Tensile Testing with combinations of grips and gauges
- Vickers Hardness Testing for both macro and micro measurements
- X-Ray Powder Diffraction for phase determination
- Conductive Anodic Filament system coupled with an environmental chamber
- Thermal conductivity of materials, liquids and powders
- Particle laser diffraction system for powder size measurements
- Static and Dynamic Rheometer for powder flow measurements
- Electrostatic charge measurement of a flowing powder on a surface
Comparing Titanium powders
Due to its high tensile strength, high resistance and ability to withstand high temperatures without creeping, titanium alloys are often used in spacecraft. Using our SEM and laser particle diffractometer, we found significant differences between powders for additive manufacturing acquired from different manufacturers.
Simulating moon dust
Combining the advanced material testing laboratory's capabilities of materials testing with access to STFC's neutron and muon source, scientists have been able to study lunar soil analogues to investigate their potential use for radiation shielding of future lunar habitats.
Using the fast neutrons allowed the investigation the radiation shielding efficiency of different lunar regolith simulants, sintered through different processes. Samples include a simulant developed by NASA composed of basaltic ash and a high glass content, and another developed in Japan from basalts from Mount Fuji, both representing the chemical composition, mineralogy and particle size distribution of regolith on the Moon.
This work is important since limited data is published on the attenuation of neutron particles for 3D printed solar sintered regolith. By using the fast neutron instrument, we have been able to characterise the radiation shielding properties of the solid sintered blocks and assess the necessary wall thickness required to protect the crew on a lunar base" - Andrew Barnes, European Space Agency
Space is hard: tough testing for 3D printed metal parts
3D-printed metal parts produced through a Europe-wide collaboration of high-performance industrial sectors have undergone extensive testing for space use - tested to destruction in many cases. The advanced materials testing laboratory took delivery of the sample parts, produced as an output of the AMAZE programme, harnessing metal 3D printing to produce lighter, cheaper, better products.
Space is an extremely challenging environment, so our lab had to perform a wide range of testing. The parts were pulled to failure and fatigue tested, where they were repeatedly subjected to heavy loads until breaking. They also underwent cryogenic and high-temperature testing to establish their resistance to the wide temperature fluctuations encountered in orbit: do they shrink, swell or hold their shape?" - Maximilian Sprengel
Additive Manufacturing powder testing
Testing raw materials is crucial for ensuring that parts produced for space can withstand harsh conditions. In order to gain more knowledge and confidence in the use of materials, the advanced materials testing laboratory is working closely with a team at STFC to test metal additively manufactured parts. Using the metal 3D printer capabilites at STFC's Daresbury Laboratory, the team is undertaking a full cycle of raw material procurement, testing, sample manufacturing, post-processing and comprehensive sample testing.
Raw material procurement is an important factor in the end-to-end additive manufacturing process as the quality of the fresh and reused metal powder is known to have a significant influence on the final part properties.
Microstructure characterisation of a friction stir weld
In this Materials Characterisation investigation, the advanced materials testing laboratory looked at the friction stir weld region of a cast cylinder and hemisphere shell, joined by a single curved track. The weld was found to be stable with good mechanical properties, no porosity and few defects in the microstructure. However, periodic bands of tungsten contamination were detected in the stir zone, probably as a result of tool wear.
Reach for the stars – helping businesses launch into (and out of) space
With the launch of NASA’s SpaceX mission, interest in the aerospace sector and commercial space travel has reignited. But developing the materials for space flight remains a challenge that requires the highest levels of research and innovation. After all, space is one of the most extreme and harsh environments imaginable, and materials developed for space missions may have to withstand these conditions for long periods with little or no intervention. But for many space sector businesses (particularly recently-launched start-ups) investing in top-class research facilities and expertise is simply not an option. STFC offers a solution by giving businesses affordable access to its world-leading facilities and expertise. Combined, these offer everything a business could need to develop their ideas into a tested, verified and ready-to-launch product.
The above capabilities complement the advanced materials testing laboratory, where businesses can obtain in-depth, bespoke analyses of their test materials. The facility’s cutting-edge equipment allows a wide range of properties to be investigated, including powder characterisation, mechanical testing and failure analysis, microstructural characterisation and heat treatment, and non-destructive residual stress measurement. Besides equipment, the laboratory provides expert advice, including recommendations on how best to apply or improve materials for a fully-fledged space mission.
5 things to consider before 3D printing
3D printing (or additive manufacturing) is one of the most rapidly growing trends in the space sector. Particularly for unique, one-off space missions, manufacturing bespoke components on a small scale can rapidly delay the development process, whilst significantly increasing costs. 3D printing allows specific component parts to be commissioned on-demand and rapidly synthesised. STFC's additive manufacturing facility at Sci-Tech Daresbury enables swift prototyping of complex designs on a project-by-project basis, facilitating cutting-edge engineering research and development at an affordable price.
STFC experts advise businesses on how 3D printing could streamline manufacturing processes to reduce costs and break down barriers to product development. The team at Daresbury has been working alongside the advanced materials testing laboratory.
STFC's Andrew Conley provides 5 things to consider...
Complementary to the advanced materials testing laboratory is ESA's Materials & Electrical Components Laboratory which guarantees an optimal choice of electrical components, materials and processes for missions and external projects, considering the unique environmental challenges involved in building for space, additionally investigating failures to ensure similar issues do not occur on future missions.