The effect of short circuits and flame temperature modes on the change in the microstructure of copper in automotive wiring

Gudym, Vasyl'; Mykhalichko, B. M.; Nazarovets, O.; Gavryliuk, Andrii

doi:10.1016/j.engfailanal.2022.106198

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…This will lead not only to an increase in the number of parking zones and closed parking lots, but also to an increase in the number of fires in electric vehicles and such facilities. It is often difficult to identify the cause that initiated the ignition of the vehicle [19].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determination of fire protection distances during a tesla model s fire in a closed parking lot

Gavryliuk

Yakovchuk

Chalyy

et al. 2023

EEJET

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This study modelled an electric vehicle fire on the example of a Tesla Model S (USA) in a closed car park. Such fires pose an increased danger due to their rapid spread, the presence of a large number of vehicles, the release of toxic combustion products and heavy smoke. In fact, the rapid spread of a fire in a closed car park is caused by unreasonably small distances between vehicles. Thus, the purpose of the study was to determine the minimum fire protection distances due to an electric vehicle fire in a closed car park using the example of Tesla Model 3. For this purpose, the objects and their physical characteristics were described, input and environmental parameters were set, and a mathematical model of the dynamics of fire development was formed. This made it possible to establish the minimum fire protection distance during the free development time of 610 s for an electric vehicle fire in a closed car park, which is 10 m along the flank and 6 m along the front. The difference in fire protection distances on the flank and front is explained by the design features of the electric vehicle. That is, the flank area of the flame will be larger than the front of the burning electric vehicle, and therefore the heat radiation power will also be greater. The actual heat radiation power is the key factor affecting fire protection distances. The results of the study can be used in the design of various types of car parks and the safe placement of vehicles in them. Fire protection distances between cars in enclosed car parks can be taken into account by insurance companies when assessing the risk of damage to cars due to fires. And also by fire and rescue units involved in extinguishing such fires, to ensure the safety of rescuers

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determination of fire protection distances during a tesla model s fire in a closed parking lot

Gavryliuk

Yakovchuk

Chalyy

et al. 2023

EEJET

View full text Add to dashboard Cite

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Experimental and theoretical research on the temperature evolution law of overcurrent fault wires

Huo,

Xu,

et al. 2024

Fire and Materials

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To investigate the problems of overload and excessive thermal insulation associated with building electrical fires caused by wires, a theoretical model of wire heat transfer is established, and the pyrolysis and combustion phenomena of the insulation layer are analyzed. The results showed that the temperature evolution of the wire underwent three stages: constant temperature, insulation heating, and high‐temperature pyrolysis. The insulation layer experiences bulging, exhausting, carbonization, dripping, and burning in sequence, and insulation layer dripping requires at least 160 A of current. As the current increases, the temperature increase rate of the wire increases gradually, and the fusing time of the wire gradually decreases. Under the same current, 160°C is the turning point at which the temperature increases. The temperature increase rate of the copper wire is greater than that of the aluminum alloy wire, and the temperature increase rate of the bare wire is greater than that of the insulated wire. The fusing time of an aluminum alloy wire is less than that of a copper wire, and the fusing time of a bare wire is less than that of an insulated wire. The research results provide theoretical guidance for the prevention and investigation of building electrical fires.

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Microstructure and component analysis of glowing contacts in electrical fire investigation

Zhang

Chen

et al. 2022

Engineering Failure Analysis

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The effect of short circuits and flame temperature modes on the change in the microstructure of copper in automotive wiring

Cited by 7 publications

References 12 publications

Determination of fire protection distances during a tesla model s fire in a closed parking lot

Determination of fire protection distances during a tesla model s fire in a closed parking lot

Experimental and theoretical research on the temperature evolution law of overcurrent fault wires

Microstructure and component analysis of glowing contacts in electrical fire investigation

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