Experimental and Numerical Study of Selected Laser

il y a 3 semaines

Strasbourg, France ICube Laboratory Temps plein

Réf **ABG-123357**
- Sujet de Thèse- 24/04/2024- Financement public/privé- ICube Laboratory- Lieu de travail- Strasbourg - Grand Est - France- Intitulé du sujet-
- Champs scientifiques- Matériaux
- Sciences de l’ingénieur
- Mots clés- laser, additive manufacturing, 3D printing, regolith, lunar dust, ceramics; selected laser melting; vacuum**Description du sujet**:
Nations across the world are now in a race to build the first Moon base and exploit the in-situ resources such as helium 3 and lunar ice. The European Space Agency has recruited the next generation of astronauts that will go back to the moon on the Artemis project. As those lines are written, Nasa has launched its new lunar lander Peregrine 1 and has just received its first signals from orbit. Peregrine 1 is expected to reach the moon by end of February, the first US lander there for 50 years. Japan will try to land on the moon by the end of January 2024. India has already landed on the moon in 2023. China was the first country to land on the far side of the moon, in January 2019, where it deployed the Yutu-2 rover.

Additive manufacturing using regolith, the main Lunar in-situ material resource, is offering a solution for long duration stay on the Moon or Mars. Appling Selective Laser Sintering (SLS) technology to build infrastructures or tools will reduce the space transportation efforts from Earth and lower the cost of the space missions. Furthermore, additive manufacturing will be a precious asset for compagnies looking into settlements for space mining of various resources.

Our research team has developed a powder bed SLS prototype using a 100 W CW laser. Multiple 3D structures have been manufactured using various lunar soil simulants. The process conditions are optimized thanks to a numerical model developed on COMSOL Muliphysics.

Nonetheless, the processing condition do not currently reflect those that will be met in space such as gravity or atmosphere. In order to recreate some of the conditions, a vacuum chamber with 10-2mbar capacity is currently being refurnished in collaboration with the International Space University and Aalen University. This chamber will host X/Y/Z/rotation stages. The outside will be adapted to fit the laser and galvo head to stir the beam.

A new simulant from IRAP will be tested. The thermomechanical characterization of the samples will be made by the CGE team at ICube, Strasbourg, Icam Toulouse and the Institut Clement Ader, Albi.

The optimization of the process in the experimental powder bed SLS machine for various simulants

The optimization of the process in the low atmospheric conditions

The optimization of the numerical model

References:
Crawford, Ian. (2015). Lunar Resources: A Review. Progress in Physical Geography. 39. 137-167. 10.1177/0309133314567585

D. Urbina, H. Madakashira, J. Salini, S. Govindaraj, R.B., J. Gancet, M. Sperl, A. Meurisse, M. Fateri and B. Imhof, 2017. Robotic prototypes for the solar sintering of regolith on the lunar surface developed within the Regolight project. Adelaide, South Australia.

**Prise de fonction**:

- 02/09/2024**Nature du financement**:

- Financement public/privé**Précisions sur le financement**:
**Présentation établissement et labo d'accueil**:

- ICube LaboratoryICube Laboratory

The Engineering science, computer science and imaging laboratory

Created in 2013, the laboratory brings together researchers of the University of Strasbourg, the CNRS (French National Center for Scientific Research), the ENGEES and the INSA of Strasbourg in the fields of engineering science and computer science, with imaging as the unifying theme.

**Site web**:
**Intitulé du doctorat**:

- Doctorat de Photonique**Pays d'obtention du doctorat**:

- France**Etablissement délivrant le doctorat**:

- Université de Strasbourg**Ecole doctorale**:

- Mathématiques, sciences de l'information et de l'ingénieurCompetence in mechatronics for the integration of the motion tables in a vacuum chamber.
Competence if possible in optics/optomechanics/optoelectronics for the implementation of the optical train in the vacuum chamber and the optimisation of the current sintering system.
Competence in material characterisation by XRD, durometer, dilatometry, metallography, tensile/compression tests.
Knowledge in laser sintering/melting on powder bed.
Experience in additive manufacturing.
Knowledge in ceramics.- 23/05/2024

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