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Home   /   Thesis   /   Study and modeling of hypervelocity impacts on satellite materials and structures

Study and modeling of hypervelocity impacts on satellite materials and structures

Engineering sciences Materials and applications


The study of very high velocity impacts, or hypervelocity impacts (HVI), has many applications, among which the protection of certain equipment within high power lasers, the protection of satellites against space debris, or the deflection of an asteroid threatening to hit the Earth. In all these examples, the impact is likely to lead to the formation of a crater and the ejection of numerous secondary debris, whose mass and speed must be estimated. The objective of this thesis is, by an essentially experimental approach, to characterize the mass and velocity distribution of debris generated by HVI on different materials in order to better understand how these are related to the mechanical properties (brittleness / hardness / density) of the materials. Several experimental methods will be used, including collection in gels, observation using ultrafast cameras, and measurement of the total momentum of the debris using a ballistic pendulum. This work will also rely on numerical simulations to help interpret the results. This work may lead to improve the models used to describe these phenomena.


Bretagne Occidentale
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