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The combination of polymeric materials used in 3D printing and carbon fi bers gives designers new possibilities in the design of light load-bearing structures. Such a reinforced material can be found in thin-walled structures. A good example is the wheel of a Mars rover, the structure of which is expected to be low in weight, with adequate strength and durability as well as deformations within the assumed range -ensuring vibration damping in the rigid suspension of a special vehicle. The paper presents the process of designing such a wheel within the limits of the Europen Rover Challenge competition regulations and the technological possibilities of a low-budget project. The conducted experiment confi rmed the correctness of the assumptions and indicated potential directions for further work.

The current trend of weight reduction entails a reduction in safety factors. This approach is understandable, but light profiles are more susceptible. The structure works close to the boundary loads, and their destruction is primarily determined by dynamic relief. Today, composite masts are diagnosed by the following methods: optical microscopy, electron microscopy, X-ray analysis and thermal analysis. These methods are invasive methods. It seems that the vibration analysis of the mast-rigging system could supplement or replace the mentioned methods without the need to dismantle the mast, giving the possibility of testing on the yacht [5]. The article presents the possibility of diagnosing a composite material defect on the example of a interrupts a continuity of structure.

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