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Model of Static Destruction of a Copper Conductor during Current Overload

  • EXPERIMENTAL MECHANICS, DIAGNOSTICS, AND TESTING
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Abstract

The results of experimental and theoretical studies of the formation of a crack in a copper conductor under the influence of current overload are presented. The conductor was examined using a JSM-6390L scanning electron microscope. A refined mathematical model of the static stress–strain state and destruction of a copper rod under conditions of inelastic bending at temperatures up to 700°C has been obtained. The limiting values of the bending moment and curvature of the copper conductor, causing its rupture after the formation of a crack, have been determined. The calculation algorithm has been brought to the final analytical dependences, allowing them to be used when conducting forensic fire-technical examination or designing electrical wiring.

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This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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  1. Serikbaev East Kazakhstan Technical University, Ust-Kamenogorsk, Republic of Kazakhstan

    A. I. Nedobitkov & B. M. Abdeyev

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  1. A. I. Nedobitkov
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  2. B. M. Abdeyev
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Correspondence to A. I. Nedobitkov.

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Translated by Sh. Galyaltdinov

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Nedobitkov, A.I., Abdeyev, B.M. Model of Static Destruction of a Copper Conductor during Current Overload. J. Mach. Manuf. Reliab. 53, 96–105 (2024). https://doi.org/10.1134/S1052618824010084

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