Microscopic characteristics of copper wires with short-circuit molten marks in electrical fire-Reference-Cited by-同舟云学术

Microscopic characteristics of copper wires with short-circuit molten marks in electrical fire

Published:2023-05-16 Issue:6 Volume:65 Page:844-854
ISSN:0025-5300
Container-title:Materials Testing
language:en
Short-container-title:

Author:

Xu Na¹,Ding Ning¹,Liu Long¹,Zaïri Fahmi²,Guo Weimin¹^ORCID,Li Fuwei¹,Li Nan¹,Tian Linan¹,Li Enxia¹,Chen Lizong¹

Affiliation:

1. Engineering Research Center of Failure Analysis and Safety Assessment, Shandong Analysis and Test Center , Qilu University of Technology , No. 19 Keyuan Road , Lixia District , Jinan , 250014 , Shandong , China

2. Civil Engineering and Geo-Environmental Laboratory , University of Lille , Lille , Hauts-de-France , France

Abstract

Abstract Electrical fire accidents occurred frequently all over the world in recent years, which had caused a large number of casualties and property losses. The main cause of electrical fire is electrical wire short circuit fault. Investigations of the characteristic and influence factors of the molten marks play an important role to determine the cause of fire. In the present work, microscopic characteristics of copper wires with short-circuit molten marks in electrical fire were investigated. Primary and secondary short-circuit molten marks (PMMs and SMMs) of copper wires were prepared by simulation test. The micro-morphology, microstructure and chemical composition of molten marks were observed and compared. Based on the quantitative characterization, effects of different overload currents and heating temperatures on the microstructure of molten marks were analyzed. The results would provide fundamental information for cause identification of the electrical fire.

Funder

National Natural Science Foundation of China

Emergency Management Technology Innovation Project of Shandong Province Shandong Province Special Grant for High-Level Talents Natural Science Foundation of Shandong Province, China

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.degruyter.com/document/doi/10.1515/mt-2022-0423/pdf

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