Models for Implementation of Linear, Non-linear, and Parametrical Circuits in Traffic Safety Control Devices

This paper is devoted to the problems of lightning protection of composite materials of wind generator blades. The results of experimental studies for carbon fibers under different types of lightning current pulse effects are provided. A significant increase in the degree of destruction of materials is shown for the pulse approximating field experiment results as compared with the standard lightning current pulse. We show that under the impact of the standard current pulse there is no significant material destruction, and the release of the discharge products is also insignificant. Also we shown that under the impact of the current pulse having a long «tail» time period (the current pulse close to the real one) there is an ignition of the carbon fiber composite material near the edges of the feeding electrode. With this the burning process doesn’t end after the end of the current pulse. The description of the pulse current generator created for experiments is given.

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Investigation of composite material destruction under lightning stroke effect

Boronin

Minevich

Кочеткова

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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Destruction processes of composite materials under lightning stroke effect have been studied. The results of characteristic damages of samples have been presented upon a series of tests conducted with standard lightning currents and those ones whose shape is close to actual lightning stroke. There have been exhibited distinctions between the levels of sample damages: in the second case significant damages of composite matrix external layers have been shown, among which multiple destructions of bundles of carbon fibers at a depth of several layers, layer delamination and cavities formed inside sample. There have been described the results of generalized analysis of damages obtained by applying nondestructive inspection methods: stereoscopic microscope investigation and X-ray microtomography. The mechanism of damages has been presented on the basis of obtained data. The results of testing electrical, mechanical, thermal properties of composite samples have been given upon a set of experiments for lightning current resistance.

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Models for Implementation of Linear, Non-linear, and Parametrical Circuits in Traffic Safety Control Devices

Cited by 3 publications

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Investigating the lightning resistance of composite materials for ensuring safe operation of transport infrastructure facilities

Investigating the lightning resistance of composite materials for ensuring safe operation of transport infrastructure facilities

Investigation of the wind generator blades material resistance to the lightning current action

Investigation of composite material destruction under lightning stroke effect

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